[all-commits] [llvm/llvm-project] 9ed205: [ASan][libc++] std::basic_string annotations (#72677)

Vitaly Buka via All-commits all-commits at lists.llvm.org
Tue Dec 12 22:59:19 PST 2023


  Branch: refs/heads/users/vitalybuka/spr/lsan-install-pthread_atfork
  Home:   https://github.com/llvm/llvm-project
  Commit: 9ed20568e7de53dce85f1631d7d8c1415e7930ae
      https://github.com/llvm/llvm-project/commit/9ed20568e7de53dce85f1631d7d8c1415e7930ae
  Author: Tacet <advenam.tacet at trailofbits.com>
  Date:   2023-12-13 (Wed, 13 Dec 2023)

  Changed paths:
    M libcxx/CMakeLists.txt
    M libcxx/include/__config_site.in
    M libcxx/include/string
    M libcxx/test/std/strings/basic.string/string.capacity/capacity.pass.cpp
    M libcxx/test/std/strings/basic.string/string.capacity/clear.pass.cpp
    M libcxx/test/std/strings/basic.string/string.capacity/reserve.pass.cpp
    A libcxx/test/std/strings/basic.string/string.capacity/reserve_size.asan.pass.cpp
    M libcxx/test/std/strings/basic.string/string.capacity/reserve_size.pass.cpp
    M libcxx/test/std/strings/basic.string/string.capacity/resize_and_overwrite.pass.cpp
    M libcxx/test/std/strings/basic.string/string.capacity/resize_size.pass.cpp
    M libcxx/test/std/strings/basic.string/string.capacity/resize_size_char.pass.cpp
    M libcxx/test/std/strings/basic.string/string.capacity/shrink_to_fit.pass.cpp
    M libcxx/test/std/strings/basic.string/string.cons/T_size_size.pass.cpp
    M libcxx/test/std/strings/basic.string/string.cons/alloc.pass.cpp
    M libcxx/test/std/strings/basic.string/string.cons/brace_assignment.pass.cpp
    M libcxx/test/std/strings/basic.string/string.cons/char_assignment.pass.cpp
    M libcxx/test/std/strings/basic.string/string.cons/copy.pass.cpp
    M libcxx/test/std/strings/basic.string/string.cons/copy_alloc.pass.cpp
    M libcxx/test/std/strings/basic.string/string.cons/copy_assignment.pass.cpp
    M libcxx/test/std/strings/basic.string/string.cons/default.pass.cpp
    M libcxx/test/std/strings/basic.string/string.cons/from_range.pass.cpp
    M libcxx/test/std/strings/basic.string/string.cons/from_range_deduction.pass.cpp
    M libcxx/test/std/strings/basic.string/string.cons/initializer_list.pass.cpp
    M libcxx/test/std/strings/basic.string/string.cons/initializer_list_assignment.pass.cpp
    M libcxx/test/std/strings/basic.string/string.cons/iter_alloc.pass.cpp
    M libcxx/test/std/strings/basic.string/string.cons/iter_alloc_deduction.pass.cpp
    M libcxx/test/std/strings/basic.string/string.cons/move.pass.cpp
    M libcxx/test/std/strings/basic.string/string.cons/move_alloc.pass.cpp
    M libcxx/test/std/strings/basic.string/string.cons/move_assignment.pass.cpp
    M libcxx/test/std/strings/basic.string/string.cons/pointer_alloc.pass.cpp
    M libcxx/test/std/strings/basic.string/string.cons/pointer_assignment.pass.cpp
    M libcxx/test/std/strings/basic.string/string.cons/pointer_size_alloc.pass.cpp
    M libcxx/test/std/strings/basic.string/string.cons/size_char_alloc.pass.cpp
    M libcxx/test/std/strings/basic.string/string.cons/string_view.pass.cpp
    M libcxx/test/std/strings/basic.string/string.cons/string_view_assignment.pass.cpp
    M libcxx/test/std/strings/basic.string/string.cons/substr.pass.cpp
    M libcxx/test/std/strings/basic.string/string.cons/substr_rvalue.pass.cpp
    M libcxx/test/std/strings/basic.string/string.modifiers/string_append/append_range.pass.cpp
    M libcxx/test/std/strings/basic.string/string.modifiers/string_append/initializer_list.pass.cpp
    M libcxx/test/std/strings/basic.string/string.modifiers/string_append/iterator.pass.cpp
    M libcxx/test/std/strings/basic.string/string.modifiers/string_append/pointer.pass.cpp
    M libcxx/test/std/strings/basic.string/string.modifiers/string_append/pointer_size.pass.cpp
    M libcxx/test/std/strings/basic.string/string.modifiers/string_append/push_back.pass.cpp
    M libcxx/test/std/strings/basic.string/string.modifiers/string_append/size_char.pass.cpp
    M libcxx/test/std/strings/basic.string/string.modifiers/string_append/string.pass.cpp
    M libcxx/test/std/strings/basic.string/string.modifiers/string_append/string_size_size.pass.cpp
    M libcxx/test/std/strings/basic.string/string.modifiers/string_assign/T_size_size.pass.cpp
    M libcxx/test/std/strings/basic.string/string.modifiers/string_assign/assign_range.pass.cpp
    M libcxx/test/std/strings/basic.string/string.modifiers/string_assign/initializer_list.pass.cpp
    M libcxx/test/std/strings/basic.string/string.modifiers/string_assign/iterator.pass.cpp
    M libcxx/test/std/strings/basic.string/string.modifiers/string_assign/pointer.pass.cpp
    M libcxx/test/std/strings/basic.string/string.modifiers/string_assign/pointer_size.pass.cpp
    M libcxx/test/std/strings/basic.string/string.modifiers/string_assign/size_char.pass.cpp
    M libcxx/test/std/strings/basic.string/string.modifiers/string_assign/string.pass.cpp
    M libcxx/test/std/strings/basic.string/string.modifiers/string_assign/string_size_size.pass.cpp
    M libcxx/test/std/strings/basic.string/string.modifiers/string_copy/copy.pass.cpp
    M libcxx/test/std/strings/basic.string/string.modifiers/string_erase/iter.pass.cpp
    M libcxx/test/std/strings/basic.string/string.modifiers/string_erase/iter_iter.pass.cpp
    M libcxx/test/std/strings/basic.string/string.modifiers/string_erase/pop_back.pass.cpp
    M libcxx/test/std/strings/basic.string/string.modifiers/string_erase/size_size.pass.cpp
    M libcxx/test/std/strings/basic.string/string.modifiers/string_insert/iter_char.pass.cpp
    M libcxx/test/std/strings/basic.string/string.modifiers/string_insert/iter_initializer_list.pass.cpp
    M libcxx/test/std/strings/basic.string/string.modifiers/string_insert/iter_iter_iter.infinite_recursion.pass.cpp
    M libcxx/test/std/strings/basic.string/string.modifiers/string_insert/iter_iter_iter.pass.cpp
    M libcxx/test/std/strings/basic.string/string.modifiers/string_insert/iter_size_char.pass.cpp
    M libcxx/test/std/strings/basic.string/string.modifiers/string_insert/size_pointer.pass.cpp
    M libcxx/test/std/strings/basic.string/string.modifiers/string_insert/size_pointer_size.pass.cpp
    M libcxx/test/std/strings/basic.string/string.modifiers/string_insert/size_size_char.pass.cpp
    M libcxx/test/std/strings/basic.string/string.modifiers/string_insert/size_string.pass.cpp
    M libcxx/test/std/strings/basic.string/string.modifiers/string_insert/size_string_size_size.pass.cpp
    M libcxx/test/std/strings/basic.string/string.modifiers/string_op_plus_equal/char.pass.cpp
    M libcxx/test/std/strings/basic.string/string.modifiers/string_op_plus_equal/initializer_list.pass.cpp
    M libcxx/test/std/strings/basic.string/string.modifiers/string_op_plus_equal/pointer.pass.cpp
    M libcxx/test/std/strings/basic.string/string.modifiers/string_op_plus_equal/string.pass.cpp
    M libcxx/test/std/strings/basic.string/string.modifiers/string_replace/iter_iter_string.pass.cpp
    M libcxx/test/std/strings/basic.string/string.modifiers/string_replace/size_size_T_size_size.pass.cpp
    M libcxx/test/std/strings/basic.string/string.modifiers/string_replace/size_size_pointer.pass.cpp
    M libcxx/test/std/strings/basic.string/string.modifiers/string_replace/size_size_pointer_size.pass.cpp
    M libcxx/test/std/strings/basic.string/string.modifiers/string_replace/size_size_size_char.pass.cpp
    M libcxx/test/std/strings/basic.string/string.modifiers/string_replace/size_size_string.pass.cpp
    M libcxx/test/std/strings/basic.string/string.modifiers/string_replace/size_size_string_size_size.pass.cpp
    M libcxx/test/std/strings/basic.string/string.modifiers/string_replace/size_size_string_view.pass.cpp
    A libcxx/test/std/strings/basic.string/string.modifiers/string_swap/swap.asan.pass.cpp
    M libcxx/test/std/strings/basic.string/string.modifiers/string_swap/swap.pass.cpp
    M libcxx/test/std/strings/basic.string/string.nonmembers/string.special/swap.pass.cpp
    M libcxx/test/std/strings/basic.string/string.nonmembers/string_op+/char_string.pass.cpp
    M libcxx/test/std/strings/basic.string/string.nonmembers/string_op+/string_char.pass.cpp
    M libcxx/test/std/strings/basic.string/string.nonmembers/string_op+/string_pointer.pass.cpp
    M libcxx/test/std/strings/basic.string/string.nonmembers/string_op+/string_string.pass.cpp
    M libcxx/test/std/strings/basic.string/string.ops/string_substr/substr.pass.cpp
    M libcxx/test/std/strings/basic.string/string.ops/string_substr/substr_rvalue.pass.cpp
    M libcxx/test/support/asan_testing.h

  Log Message:
  -----------
  [ASan][libc++] std::basic_string annotations (#72677)

This commit introduces basic annotations for `std::basic_string`,
mirroring the approach used in `std::vector` and `std::deque`.
Initially, only long strings with the default allocator will be
annotated. Short strings (_SSO - short string optimization_) and strings
with non-default allocators will be annotated in the near future, with
separate commits dedicated to enabling them. The process will be similar
to the workflow employed for enabling annotations in `std::deque`.

**Please note**: these annotations function effectively only when libc++
and libc++abi dylibs are instrumented (with ASan). This aligns with the
prevailing behavior of Memory Sanitizer.

To avoid breaking everything, this commit also appends
`_LIBCPP_INSTRUMENTED_WITH_ASAN` to `__config_site` whenever libc++ is
compiled with ASan. If this macro is not defined, string annotations are
not enabled. However, linking a binary that does **not** annotate
strings with a dynamic library that annotates strings, is not permitted.

Originally proposed here: https://reviews.llvm.org/D132769

Related patches on Phabricator:
- Turning on annotations for short strings:
https://reviews.llvm.org/D147680
- Turning on annotations for all allocators:
https://reviews.llvm.org/D146214

This PR is a part of a series of patches extending AddressSanitizer C++
container overflow detection capabilities by adding annotations, similar
to those existing in `std::vector` and `std::deque` collections. These
enhancements empower ASan to effectively detect instances where the
instrumented program attempts to access memory within a collection's
internal allocation that remains unused. This includes cases where
access occurs before or after the stored elements in `std::deque`, or
between the `std::basic_string`'s size (including the null terminator)
and capacity bounds.

The introduction of these annotations was spurred by a real-world
software bug discovered by Trail of Bits, involving an out-of-bounds
memory access during the comparison of two strings using the
`std::equals` function. This function was taking iterators
(`iter1_begin`, `iter1_end`, `iter2_begin`) to perform the comparison,
using a custom comparison function. When the `iter1` object exceeded the
length of `iter2`, an out-of-bounds read could occur on the `iter2`
object. Container sanitization, upon enabling these annotations, would
effectively identify and flag this potential vulnerability.

This Pull Request introduces basic annotations for `std::basic_string`.
Long strings exhibit structural similarities to `std::vector` and will
be annotated accordingly. Short strings are already implemented, but
will be turned on separately in a forthcoming commit. Look at [a
comment](https://github.com/llvm/llvm-project/pull/72677#issuecomment-1850554465)
below to read about SSO issues at current moment.

Due to the functionality introduced in
[D132522](https://github.com/llvm/llvm-project/commit/dd1b7b797a116eed588fd752fbe61d34deeb24e4),
the `__sanitizer_annotate_contiguous_container` function now offers
compatibility with all allocators. However, enabling this support will
be done in a subsequent commit. For the time being, only strings with
the default allocator will be annotated.

If you have any questions, please email:
- advenam.tacet at trailofbits.com
- disconnect3d at trailofbits.com


  Commit: 2fb060efd87b6fca7815852b271dc064cb276d40
      https://github.com/llvm/llvm-project/commit/2fb060efd87b6fca7815852b271dc064cb276d40
  Author: Matheus Izvekov <mizvekov at gmail.com>
  Date:   2023-12-13 (Wed, 13 Dec 2023)

  Changed paths:
    M llvm/lib/Transforms/Coroutines/CoroFrame.cpp
    M llvm/test/Transforms/Coroutines/coro-debug-frame-variable.ll

  Log Message:
  -----------
  Revert "[coroutines] Use DILocation from new storage for hoisted dbg.declare" (#75282)

Reverts llvm/llvm-project#75104

Original commit causes clang to generate invalid IR:
```
mismatched subprogram between llvm.dbg.declare variable and !dbg attachment
  call void @llvm.dbg.declare(metadata ptr %4, metadata !34468, metadata !DIExpression(DW_OP_plus_uconst, 176)), !dbg !34467
```


  Commit: ddf85b92aa53a0c205bf6c6b66fdb28ac1b9703b
      https://github.com/llvm/llvm-project/commit/ddf85b92aa53a0c205bf6c6b66fdb28ac1b9703b
  Author: Yingchi Long <i at lyc.dev>
  Date:   2023-12-13 (Wed, 13 Dec 2023)

  Changed paths:
    M llvm/lib/Target/BPF/BPFISelDAGToDAG.cpp
    M llvm/lib/Target/BPF/BPFISelLowering.cpp
    M llvm/lib/Target/BPF/BPFISelLowering.h
    A llvm/test/CodeGen/BPF/dynamic-stack.ll
    M llvm/test/CodeGen/BPF/sdiv_error.ll
    A llvm/test/CodeGen/BPF/srem_error.ll

  Log Message:
  -----------
  [BPF] improve error handling by custom lowering & fail() (#75088)

Currently on mcpu=v3 we do not support sdiv, srem instructions. And the
backend crashes with stacktrace & coredump, which is misleading for end
users, as this is not a "bug"

Add llvm bug reporting for sdiv/srem on ISel legalize-op phase.

For clang frontend we can get detailed location & bug report.

    $ build/bin/clang -g -target bpf -c local/sdiv.c
local/sdiv.c:1:35: error: unsupported signed division, please convert to
unsigned div/mod.
        1 | int sdiv(int a, int b) { return a / b; }
          |                                   ^
    1 error generated.

Fixes: #70433
Fixes: #48647

This also improves error handling for dynamic stack allocation:

    local/vla.c:2:3: error: unsupported dynamic stack allocation
        2 |   int b[n];
          |   ^
    1 error generated.

Fixes: https://github.com/llvm/llvm-project/issues/57171


  Commit: 3bedc93d844808e88ccbd9a502435ab69e3b1ed1
      https://github.com/llvm/llvm-project/commit/3bedc93d844808e88ccbd9a502435ab69e3b1ed1
  Author: Vitaly Buka <vitalybuka at google.com>
  Date:   2023-12-12 (Tue, 12 Dec 2023)

  Changed paths:
    M compiler-rt/test/sanitizer_common/TestCases/Posix/fork_threaded.cpp

  Log Message:
  -----------
  [test][sanitizer] Remove unnececary `printf` and `gettid`

Fixes sanitizer-ppc64le-linux bot.


  Commit: 4b5224a27e3639b0efcec39bec48f66bd39a2751
      https://github.com/llvm/llvm-project/commit/4b5224a27e3639b0efcec39bec48f66bd39a2751
  Author: serge-sans-paille <sguelton at mozilla.com>
  Date:   2023-12-13 (Wed, 13 Dec 2023)

  Changed paths:
    M llvm/lib/Transforms/Instrumentation/PGOInstrumentation.cpp
    M llvm/test/Transforms/PGOProfile/timestamp.ll

  Log Message:
  -----------
  Disable PGO instrumentation on naked function (#75224)

We only allow for assembly code in naked function, and PGO
instrumentation (esp. temporal instrumentation that introduces a
function call) can wreak havoc in this.

Fix #74573


  Commit: f68435ff92fd87f5fd0c5bd6a32721f94a9f704d
      https://github.com/llvm/llvm-project/commit/f68435ff92fd87f5fd0c5bd6a32721f94a9f704d
  Author: Eric <eric at efcs.ca>
  Date:   2023-12-13 (Wed, 13 Dec 2023)

  Changed paths:
    M libcxx/docs/index.rst

  Log Message:
  -----------
  Add libc++ main builder status badge (#75283)

Also add links to github actions workflow.


  Commit: 88cc35b27e6c7966ab2463fa06d3dd970e88df64
      https://github.com/llvm/llvm-project/commit/88cc35b27e6c7966ab2463fa06d3dd970e88df64
  Author: Sizov Nikita <s.nikita.v at gmail.com>
  Date:   2023-12-13 (Wed, 13 Dec 2023)

  Changed paths:
    M llvm/lib/Transforms/InstCombine/InstCombineCalls.cpp
    M llvm/lib/Transforms/InstCombine/InstCombineInternal.h
    M llvm/lib/Transforms/InstCombine/InstructionCombining.cpp
    A llvm/test/Transforms/InstCombine/commutative-operation-over-selects.ll

  Log Message:
  -----------
  [InstCombine] Fold `binop (select cond, a, b), (select cond, b, a)` to `binop a, b` (#74953)

```
CommutativeBinOp(select(V, A, B), select(V, B, A) --> CommutativeBinOp(A, B)
CommutativeIntrinsicCall(select(V, A, B), select(V, B, A), ...) --> CommutativeIntrinsicCall(A, B, ...)
```

https://alive2.llvm.org/ce/z/8CDUZ4

Closes #73904


  Commit: 41d19fbef0f7f2ebdcb89965285401aac494cc68
      https://github.com/llvm/llvm-project/commit/41d19fbef0f7f2ebdcb89965285401aac494cc68
  Author: Vitaly Buka <vitalybuka at google.com>
  Date:   2023-12-12 (Tue, 12 Dec 2023)

  Changed paths:
    M compiler-rt/test/sanitizer_common/TestCases/Posix/fork_threaded.cpp

  Log Message:
  -----------
  [test][sanitizer] Add `fork` include to the test


  Commit: 215c5656449c8e817a3759d989f27ba39d711cbd
      https://github.com/llvm/llvm-project/commit/215c5656449c8e817a3759d989f27ba39d711cbd
  Author: Fangrui Song <i at maskray.me>
  Date:   2023-12-12 (Tue, 12 Dec 2023)

  Changed paths:
    M lld/test/ELF/linkerscript/provide-shared.s
    R lld/test/ELF/linkerscript/provide-shared2.s
    M lld/test/ELF/linkerscript/symbolreferenced.s

  Log Message:
  -----------
  [ELF,test] Improve PROVIDE tests


  Commit: 0efc1674d914bd419cd9e031a12b2e1036931c67
      https://github.com/llvm/llvm-project/commit/0efc1674d914bd419cd9e031a12b2e1036931c67
  Author: Vitaly Buka <vitalybuka at google.com>
  Date:   2023-12-12 (Tue, 12 Dec 2023)

  Changed paths:
    A compiler-rt/test/sanitizer_common/TestCases/Posix/fork_threaded.c
    R compiler-rt/test/sanitizer_common/TestCases/Posix/fork_threaded.cpp

  Log Message:
  -----------
  [test][sanitizer] Convert test from C++ to C

This avoids internal libstdc++ leaks.


  Commit: ff467df0d78d8e8fb51f68ab896dd521bacc78c2
      https://github.com/llvm/llvm-project/commit/ff467df0d78d8e8fb51f68ab896dd521bacc78c2
  Author: Vitaly Buka <vitalybuka at google.com>
  Date:   2023-12-12 (Tue, 12 Dec 2023)

  Changed paths:
    A compiler-rt/test/sanitizer_common/TestCases/Posix/fork_threaded.c
    R compiler-rt/test/sanitizer_common/TestCases/Posix/fork_threaded.cpp
    M libcxx/CMakeLists.txt
    M libcxx/docs/index.rst
    M libcxx/include/__config_site.in
    M libcxx/include/string
    M libcxx/test/std/strings/basic.string/string.capacity/capacity.pass.cpp
    M libcxx/test/std/strings/basic.string/string.capacity/clear.pass.cpp
    M libcxx/test/std/strings/basic.string/string.capacity/reserve.pass.cpp
    A libcxx/test/std/strings/basic.string/string.capacity/reserve_size.asan.pass.cpp
    M libcxx/test/std/strings/basic.string/string.capacity/reserve_size.pass.cpp
    M libcxx/test/std/strings/basic.string/string.capacity/resize_and_overwrite.pass.cpp
    M libcxx/test/std/strings/basic.string/string.capacity/resize_size.pass.cpp
    M libcxx/test/std/strings/basic.string/string.capacity/resize_size_char.pass.cpp
    M libcxx/test/std/strings/basic.string/string.capacity/shrink_to_fit.pass.cpp
    M libcxx/test/std/strings/basic.string/string.cons/T_size_size.pass.cpp
    M libcxx/test/std/strings/basic.string/string.cons/alloc.pass.cpp
    M libcxx/test/std/strings/basic.string/string.cons/brace_assignment.pass.cpp
    M libcxx/test/std/strings/basic.string/string.cons/char_assignment.pass.cpp
    M libcxx/test/std/strings/basic.string/string.cons/copy.pass.cpp
    M libcxx/test/std/strings/basic.string/string.cons/copy_alloc.pass.cpp
    M libcxx/test/std/strings/basic.string/string.cons/copy_assignment.pass.cpp
    M libcxx/test/std/strings/basic.string/string.cons/default.pass.cpp
    M libcxx/test/std/strings/basic.string/string.cons/from_range.pass.cpp
    M libcxx/test/std/strings/basic.string/string.cons/from_range_deduction.pass.cpp
    M libcxx/test/std/strings/basic.string/string.cons/initializer_list.pass.cpp
    M libcxx/test/std/strings/basic.string/string.cons/initializer_list_assignment.pass.cpp
    M libcxx/test/std/strings/basic.string/string.cons/iter_alloc.pass.cpp
    M libcxx/test/std/strings/basic.string/string.cons/iter_alloc_deduction.pass.cpp
    M libcxx/test/std/strings/basic.string/string.cons/move.pass.cpp
    M libcxx/test/std/strings/basic.string/string.cons/move_alloc.pass.cpp
    M libcxx/test/std/strings/basic.string/string.cons/move_assignment.pass.cpp
    M libcxx/test/std/strings/basic.string/string.cons/pointer_alloc.pass.cpp
    M libcxx/test/std/strings/basic.string/string.cons/pointer_assignment.pass.cpp
    M libcxx/test/std/strings/basic.string/string.cons/pointer_size_alloc.pass.cpp
    M libcxx/test/std/strings/basic.string/string.cons/size_char_alloc.pass.cpp
    M libcxx/test/std/strings/basic.string/string.cons/string_view.pass.cpp
    M libcxx/test/std/strings/basic.string/string.cons/string_view_assignment.pass.cpp
    M libcxx/test/std/strings/basic.string/string.cons/substr.pass.cpp
    M libcxx/test/std/strings/basic.string/string.cons/substr_rvalue.pass.cpp
    M libcxx/test/std/strings/basic.string/string.modifiers/string_append/append_range.pass.cpp
    M libcxx/test/std/strings/basic.string/string.modifiers/string_append/initializer_list.pass.cpp
    M libcxx/test/std/strings/basic.string/string.modifiers/string_append/iterator.pass.cpp
    M libcxx/test/std/strings/basic.string/string.modifiers/string_append/pointer.pass.cpp
    M libcxx/test/std/strings/basic.string/string.modifiers/string_append/pointer_size.pass.cpp
    M libcxx/test/std/strings/basic.string/string.modifiers/string_append/push_back.pass.cpp
    M libcxx/test/std/strings/basic.string/string.modifiers/string_append/size_char.pass.cpp
    M libcxx/test/std/strings/basic.string/string.modifiers/string_append/string.pass.cpp
    M libcxx/test/std/strings/basic.string/string.modifiers/string_append/string_size_size.pass.cpp
    M libcxx/test/std/strings/basic.string/string.modifiers/string_assign/T_size_size.pass.cpp
    M libcxx/test/std/strings/basic.string/string.modifiers/string_assign/assign_range.pass.cpp
    M libcxx/test/std/strings/basic.string/string.modifiers/string_assign/initializer_list.pass.cpp
    M libcxx/test/std/strings/basic.string/string.modifiers/string_assign/iterator.pass.cpp
    M libcxx/test/std/strings/basic.string/string.modifiers/string_assign/pointer.pass.cpp
    M libcxx/test/std/strings/basic.string/string.modifiers/string_assign/pointer_size.pass.cpp
    M libcxx/test/std/strings/basic.string/string.modifiers/string_assign/size_char.pass.cpp
    M libcxx/test/std/strings/basic.string/string.modifiers/string_assign/string.pass.cpp
    M libcxx/test/std/strings/basic.string/string.modifiers/string_assign/string_size_size.pass.cpp
    M libcxx/test/std/strings/basic.string/string.modifiers/string_copy/copy.pass.cpp
    M libcxx/test/std/strings/basic.string/string.modifiers/string_erase/iter.pass.cpp
    M libcxx/test/std/strings/basic.string/string.modifiers/string_erase/iter_iter.pass.cpp
    M libcxx/test/std/strings/basic.string/string.modifiers/string_erase/pop_back.pass.cpp
    M libcxx/test/std/strings/basic.string/string.modifiers/string_erase/size_size.pass.cpp
    M libcxx/test/std/strings/basic.string/string.modifiers/string_insert/iter_char.pass.cpp
    M libcxx/test/std/strings/basic.string/string.modifiers/string_insert/iter_initializer_list.pass.cpp
    M libcxx/test/std/strings/basic.string/string.modifiers/string_insert/iter_iter_iter.infinite_recursion.pass.cpp
    M libcxx/test/std/strings/basic.string/string.modifiers/string_insert/iter_iter_iter.pass.cpp
    M libcxx/test/std/strings/basic.string/string.modifiers/string_insert/iter_size_char.pass.cpp
    M libcxx/test/std/strings/basic.string/string.modifiers/string_insert/size_pointer.pass.cpp
    M libcxx/test/std/strings/basic.string/string.modifiers/string_insert/size_pointer_size.pass.cpp
    M libcxx/test/std/strings/basic.string/string.modifiers/string_insert/size_size_char.pass.cpp
    M libcxx/test/std/strings/basic.string/string.modifiers/string_insert/size_string.pass.cpp
    M libcxx/test/std/strings/basic.string/string.modifiers/string_insert/size_string_size_size.pass.cpp
    M libcxx/test/std/strings/basic.string/string.modifiers/string_op_plus_equal/char.pass.cpp
    M libcxx/test/std/strings/basic.string/string.modifiers/string_op_plus_equal/initializer_list.pass.cpp
    M libcxx/test/std/strings/basic.string/string.modifiers/string_op_plus_equal/pointer.pass.cpp
    M libcxx/test/std/strings/basic.string/string.modifiers/string_op_plus_equal/string.pass.cpp
    M libcxx/test/std/strings/basic.string/string.modifiers/string_replace/iter_iter_string.pass.cpp
    M libcxx/test/std/strings/basic.string/string.modifiers/string_replace/size_size_T_size_size.pass.cpp
    M libcxx/test/std/strings/basic.string/string.modifiers/string_replace/size_size_pointer.pass.cpp
    M libcxx/test/std/strings/basic.string/string.modifiers/string_replace/size_size_pointer_size.pass.cpp
    M libcxx/test/std/strings/basic.string/string.modifiers/string_replace/size_size_size_char.pass.cpp
    M libcxx/test/std/strings/basic.string/string.modifiers/string_replace/size_size_string.pass.cpp
    M libcxx/test/std/strings/basic.string/string.modifiers/string_replace/size_size_string_size_size.pass.cpp
    M libcxx/test/std/strings/basic.string/string.modifiers/string_replace/size_size_string_view.pass.cpp
    A libcxx/test/std/strings/basic.string/string.modifiers/string_swap/swap.asan.pass.cpp
    M libcxx/test/std/strings/basic.string/string.modifiers/string_swap/swap.pass.cpp
    M libcxx/test/std/strings/basic.string/string.nonmembers/string.special/swap.pass.cpp
    M libcxx/test/std/strings/basic.string/string.nonmembers/string_op+/char_string.pass.cpp
    M libcxx/test/std/strings/basic.string/string.nonmembers/string_op+/string_char.pass.cpp
    M libcxx/test/std/strings/basic.string/string.nonmembers/string_op+/string_pointer.pass.cpp
    M libcxx/test/std/strings/basic.string/string.nonmembers/string_op+/string_string.pass.cpp
    M libcxx/test/std/strings/basic.string/string.ops/string_substr/substr.pass.cpp
    M libcxx/test/std/strings/basic.string/string.ops/string_substr/substr_rvalue.pass.cpp
    M libcxx/test/support/asan_testing.h
    M lld/test/ELF/linkerscript/provide-shared.s
    R lld/test/ELF/linkerscript/provide-shared2.s
    M lld/test/ELF/linkerscript/symbolreferenced.s
    M llvm/lib/Target/BPF/BPFISelDAGToDAG.cpp
    M llvm/lib/Target/BPF/BPFISelLowering.cpp
    M llvm/lib/Target/BPF/BPFISelLowering.h
    M llvm/lib/Transforms/Coroutines/CoroFrame.cpp
    M llvm/lib/Transforms/InstCombine/InstCombineCalls.cpp
    M llvm/lib/Transforms/InstCombine/InstCombineInternal.h
    M llvm/lib/Transforms/InstCombine/InstructionCombining.cpp
    M llvm/lib/Transforms/Instrumentation/PGOInstrumentation.cpp
    A llvm/test/CodeGen/BPF/dynamic-stack.ll
    M llvm/test/CodeGen/BPF/sdiv_error.ll
    A llvm/test/CodeGen/BPF/srem_error.ll
    M llvm/test/Transforms/Coroutines/coro-debug-frame-variable.ll
    A llvm/test/Transforms/InstCombine/commutative-operation-over-selects.ll
    M llvm/test/Transforms/PGOProfile/timestamp.ll

  Log Message:
  -----------
  [𝘀𝗽𝗿] changes introduced through rebase

Created using spr 1.3.4

[skip ci]


  Commit: fe727592edd95a088ea76726304d228576fd8daf
      https://github.com/llvm/llvm-project/commit/fe727592edd95a088ea76726304d228576fd8daf
  Author: Vitaly Buka <vitalybuka at google.com>
  Date:   2023-12-12 (Tue, 12 Dec 2023)

  Changed paths:
    A compiler-rt/test/sanitizer_common/TestCases/Posix/fork_threaded.c
    R compiler-rt/test/sanitizer_common/TestCases/Posix/fork_threaded.cpp
    M libcxx/CMakeLists.txt
    M libcxx/docs/index.rst
    M libcxx/include/__config_site.in
    M libcxx/include/string
    M libcxx/test/std/strings/basic.string/string.capacity/capacity.pass.cpp
    M libcxx/test/std/strings/basic.string/string.capacity/clear.pass.cpp
    M libcxx/test/std/strings/basic.string/string.capacity/reserve.pass.cpp
    A libcxx/test/std/strings/basic.string/string.capacity/reserve_size.asan.pass.cpp
    M libcxx/test/std/strings/basic.string/string.capacity/reserve_size.pass.cpp
    M libcxx/test/std/strings/basic.string/string.capacity/resize_and_overwrite.pass.cpp
    M libcxx/test/std/strings/basic.string/string.capacity/resize_size.pass.cpp
    M libcxx/test/std/strings/basic.string/string.capacity/resize_size_char.pass.cpp
    M libcxx/test/std/strings/basic.string/string.capacity/shrink_to_fit.pass.cpp
    M libcxx/test/std/strings/basic.string/string.cons/T_size_size.pass.cpp
    M libcxx/test/std/strings/basic.string/string.cons/alloc.pass.cpp
    M libcxx/test/std/strings/basic.string/string.cons/brace_assignment.pass.cpp
    M libcxx/test/std/strings/basic.string/string.cons/char_assignment.pass.cpp
    M libcxx/test/std/strings/basic.string/string.cons/copy.pass.cpp
    M libcxx/test/std/strings/basic.string/string.cons/copy_alloc.pass.cpp
    M libcxx/test/std/strings/basic.string/string.cons/copy_assignment.pass.cpp
    M libcxx/test/std/strings/basic.string/string.cons/default.pass.cpp
    M libcxx/test/std/strings/basic.string/string.cons/from_range.pass.cpp
    M libcxx/test/std/strings/basic.string/string.cons/from_range_deduction.pass.cpp
    M libcxx/test/std/strings/basic.string/string.cons/initializer_list.pass.cpp
    M libcxx/test/std/strings/basic.string/string.cons/initializer_list_assignment.pass.cpp
    M libcxx/test/std/strings/basic.string/string.cons/iter_alloc.pass.cpp
    M libcxx/test/std/strings/basic.string/string.cons/iter_alloc_deduction.pass.cpp
    M libcxx/test/std/strings/basic.string/string.cons/move.pass.cpp
    M libcxx/test/std/strings/basic.string/string.cons/move_alloc.pass.cpp
    M libcxx/test/std/strings/basic.string/string.cons/move_assignment.pass.cpp
    M libcxx/test/std/strings/basic.string/string.cons/pointer_alloc.pass.cpp
    M libcxx/test/std/strings/basic.string/string.cons/pointer_assignment.pass.cpp
    M libcxx/test/std/strings/basic.string/string.cons/pointer_size_alloc.pass.cpp
    M libcxx/test/std/strings/basic.string/string.cons/size_char_alloc.pass.cpp
    M libcxx/test/std/strings/basic.string/string.cons/string_view.pass.cpp
    M libcxx/test/std/strings/basic.string/string.cons/string_view_assignment.pass.cpp
    M libcxx/test/std/strings/basic.string/string.cons/substr.pass.cpp
    M libcxx/test/std/strings/basic.string/string.cons/substr_rvalue.pass.cpp
    M libcxx/test/std/strings/basic.string/string.modifiers/string_append/append_range.pass.cpp
    M libcxx/test/std/strings/basic.string/string.modifiers/string_append/initializer_list.pass.cpp
    M libcxx/test/std/strings/basic.string/string.modifiers/string_append/iterator.pass.cpp
    M libcxx/test/std/strings/basic.string/string.modifiers/string_append/pointer.pass.cpp
    M libcxx/test/std/strings/basic.string/string.modifiers/string_append/pointer_size.pass.cpp
    M libcxx/test/std/strings/basic.string/string.modifiers/string_append/push_back.pass.cpp
    M libcxx/test/std/strings/basic.string/string.modifiers/string_append/size_char.pass.cpp
    M libcxx/test/std/strings/basic.string/string.modifiers/string_append/string.pass.cpp
    M libcxx/test/std/strings/basic.string/string.modifiers/string_append/string_size_size.pass.cpp
    M libcxx/test/std/strings/basic.string/string.modifiers/string_assign/T_size_size.pass.cpp
    M libcxx/test/std/strings/basic.string/string.modifiers/string_assign/assign_range.pass.cpp
    M libcxx/test/std/strings/basic.string/string.modifiers/string_assign/initializer_list.pass.cpp
    M libcxx/test/std/strings/basic.string/string.modifiers/string_assign/iterator.pass.cpp
    M libcxx/test/std/strings/basic.string/string.modifiers/string_assign/pointer.pass.cpp
    M libcxx/test/std/strings/basic.string/string.modifiers/string_assign/pointer_size.pass.cpp
    M libcxx/test/std/strings/basic.string/string.modifiers/string_assign/size_char.pass.cpp
    M libcxx/test/std/strings/basic.string/string.modifiers/string_assign/string.pass.cpp
    M libcxx/test/std/strings/basic.string/string.modifiers/string_assign/string_size_size.pass.cpp
    M libcxx/test/std/strings/basic.string/string.modifiers/string_copy/copy.pass.cpp
    M libcxx/test/std/strings/basic.string/string.modifiers/string_erase/iter.pass.cpp
    M libcxx/test/std/strings/basic.string/string.modifiers/string_erase/iter_iter.pass.cpp
    M libcxx/test/std/strings/basic.string/string.modifiers/string_erase/pop_back.pass.cpp
    M libcxx/test/std/strings/basic.string/string.modifiers/string_erase/size_size.pass.cpp
    M libcxx/test/std/strings/basic.string/string.modifiers/string_insert/iter_char.pass.cpp
    M libcxx/test/std/strings/basic.string/string.modifiers/string_insert/iter_initializer_list.pass.cpp
    M libcxx/test/std/strings/basic.string/string.modifiers/string_insert/iter_iter_iter.infinite_recursion.pass.cpp
    M libcxx/test/std/strings/basic.string/string.modifiers/string_insert/iter_iter_iter.pass.cpp
    M libcxx/test/std/strings/basic.string/string.modifiers/string_insert/iter_size_char.pass.cpp
    M libcxx/test/std/strings/basic.string/string.modifiers/string_insert/size_pointer.pass.cpp
    M libcxx/test/std/strings/basic.string/string.modifiers/string_insert/size_pointer_size.pass.cpp
    M libcxx/test/std/strings/basic.string/string.modifiers/string_insert/size_size_char.pass.cpp
    M libcxx/test/std/strings/basic.string/string.modifiers/string_insert/size_string.pass.cpp
    M libcxx/test/std/strings/basic.string/string.modifiers/string_insert/size_string_size_size.pass.cpp
    M libcxx/test/std/strings/basic.string/string.modifiers/string_op_plus_equal/char.pass.cpp
    M libcxx/test/std/strings/basic.string/string.modifiers/string_op_plus_equal/initializer_list.pass.cpp
    M libcxx/test/std/strings/basic.string/string.modifiers/string_op_plus_equal/pointer.pass.cpp
    M libcxx/test/std/strings/basic.string/string.modifiers/string_op_plus_equal/string.pass.cpp
    M libcxx/test/std/strings/basic.string/string.modifiers/string_replace/iter_iter_string.pass.cpp
    M libcxx/test/std/strings/basic.string/string.modifiers/string_replace/size_size_T_size_size.pass.cpp
    M libcxx/test/std/strings/basic.string/string.modifiers/string_replace/size_size_pointer.pass.cpp
    M libcxx/test/std/strings/basic.string/string.modifiers/string_replace/size_size_pointer_size.pass.cpp
    M libcxx/test/std/strings/basic.string/string.modifiers/string_replace/size_size_size_char.pass.cpp
    M libcxx/test/std/strings/basic.string/string.modifiers/string_replace/size_size_string.pass.cpp
    M libcxx/test/std/strings/basic.string/string.modifiers/string_replace/size_size_string_size_size.pass.cpp
    M libcxx/test/std/strings/basic.string/string.modifiers/string_replace/size_size_string_view.pass.cpp
    A libcxx/test/std/strings/basic.string/string.modifiers/string_swap/swap.asan.pass.cpp
    M libcxx/test/std/strings/basic.string/string.modifiers/string_swap/swap.pass.cpp
    M libcxx/test/std/strings/basic.string/string.nonmembers/string.special/swap.pass.cpp
    M libcxx/test/std/strings/basic.string/string.nonmembers/string_op+/char_string.pass.cpp
    M libcxx/test/std/strings/basic.string/string.nonmembers/string_op+/string_char.pass.cpp
    M libcxx/test/std/strings/basic.string/string.nonmembers/string_op+/string_pointer.pass.cpp
    M libcxx/test/std/strings/basic.string/string.nonmembers/string_op+/string_string.pass.cpp
    M libcxx/test/std/strings/basic.string/string.ops/string_substr/substr.pass.cpp
    M libcxx/test/std/strings/basic.string/string.ops/string_substr/substr_rvalue.pass.cpp
    M libcxx/test/support/asan_testing.h
    M lld/test/ELF/linkerscript/provide-shared.s
    R lld/test/ELF/linkerscript/provide-shared2.s
    M lld/test/ELF/linkerscript/symbolreferenced.s
    M llvm/lib/Target/BPF/BPFISelDAGToDAG.cpp
    M llvm/lib/Target/BPF/BPFISelLowering.cpp
    M llvm/lib/Target/BPF/BPFISelLowering.h
    M llvm/lib/Transforms/Coroutines/CoroFrame.cpp
    M llvm/lib/Transforms/InstCombine/InstCombineCalls.cpp
    M llvm/lib/Transforms/InstCombine/InstCombineInternal.h
    M llvm/lib/Transforms/InstCombine/InstructionCombining.cpp
    M llvm/lib/Transforms/Instrumentation/PGOInstrumentation.cpp
    A llvm/test/CodeGen/BPF/dynamic-stack.ll
    M llvm/test/CodeGen/BPF/sdiv_error.ll
    A llvm/test/CodeGen/BPF/srem_error.ll
    M llvm/test/Transforms/Coroutines/coro-debug-frame-variable.ll
    A llvm/test/Transforms/InstCombine/commutative-operation-over-selects.ll
    M llvm/test/Transforms/PGOProfile/timestamp.ll

  Log Message:
  -----------
  rebase

Created using spr 1.3.4


Compare: https://github.com/llvm/llvm-project/compare/430ba5f2f491...fe727592edd9


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