[clang] [Clang] Prevent null pointer dereference in template deduction guide creation (PR #97097)

LLVM Continuous Integration via cfe-commits cfe-commits at lists.llvm.org
Sat Jun 29 12:03:47 PDT 2024 

llvm-ci wrote:

LLVM Buildbot has detected a new failure on builder `sanitizer-x86_64-linux` running on `sanitizer-buildbot2` while building `clang` at step 2 "annotate".

Full details are available at: https://lab.llvm.org/buildbot/#/builders/66/builds/776

Here is the relevant piece of the build log for the reference:
```
Step 2 (annotate) failure: 'python ../sanitizer_buildbot/sanitizers/zorg/buildbot/builders/sanitizers/buildbot_selector.py' (failure)
...
llvm-lit: /b/sanitizer-x86_64-linux/build/llvm-project/compiler-rt/test/lit.common.cfg.py:60: warning: Path reported by clang does not exist: "/b/sanitizer-x86_64-linux/build/build_default/lib/clang/19/lib/i386-unknown-linux-gnu". This path was found by running ['/b/sanitizer-x86_64-linux/build/build_default/./bin/clang', '--target=x86_64-unknown-linux-gnu', '-m32', '-print-runtime-dir'].
llvm-lit: /b/sanitizer-x86_64-linux/build/llvm-project/compiler-rt/test/lit.common.cfg.py:60: warning: Path reported by clang does not exist: "/b/sanitizer-x86_64-linux/build/build_default/lib/clang/19/lib/x86_64-unknown-linux-gnu". This path was found by running ['/b/sanitizer-x86_64-linux/build/build_default/./bin/clang', '--target=x86_64-unknown-linux-gnu', '-m64', '-print-runtime-dir'].
llvm-lit: /b/sanitizer-x86_64-linux/build/llvm-project/compiler-rt/test/lit.common.cfg.py:60: warning: Path reported by clang does not exist: "/b/sanitizer-x86_64-linux/build/build_default/lib/clang/19/lib/x86_64-unknown-linux-gnu". This path was found by running ['/b/sanitizer-x86_64-linux/build/build_default/./bin/clang', '--target=x86_64-unknown-linux-gnu', '-Wthread-safety', '-Wthread-safety-reference', '-Wthread-safety-beta', '-print-runtime-dir'].
llvm-lit: /b/sanitizer-x86_64-linux/build/llvm-project/compiler-rt/test/lit.common.cfg.py:60: warning: Path reported by clang does not exist: "/b/sanitizer-x86_64-linux/build/build_default/lib/clang/19/lib/x86_64-unknown-linux-gnu". This path was found by running ['/b/sanitizer-x86_64-linux/build/build_default/./bin/clang', '--target=x86_64-unknown-linux-gnu', '-m64', '-print-runtime-dir'].
llvm-lit: /b/sanitizer-x86_64-linux/build/llvm-project/compiler-rt/test/lit.common.cfg.py:60: warning: Path reported by clang does not exist: "/b/sanitizer-x86_64-linux/build/build_default/lib/clang/19/lib/x86_64-unknown-linux-gnu". This path was found by running ['/b/sanitizer-x86_64-linux/build/build_default/./bin/clang', '--target=x86_64-unknown-linux-gnu', '-m64', '-print-runtime-dir'].
llvm-lit: /b/sanitizer-x86_64-linux/build/llvm-project/compiler-rt/test/lit.common.cfg.py:60: warning: Path reported by clang does not exist: "/b/sanitizer-x86_64-linux/build/build_default/lib/clang/19/lib/x86_64-unknown-linux-gnu". This path was found by running ['/b/sanitizer-x86_64-linux/build/build_default/./bin/clang', '--target=x86_64-unknown-linux-gnu', '-m64', '-print-runtime-dir'].
llvm-lit: /b/sanitizer-x86_64-linux/build/llvm-project/compiler-rt/test/lit.common.cfg.py:60: warning: Path reported by clang does not exist: "/b/sanitizer-x86_64-linux/build/build_default/lib/clang/19/lib/x86_64-unknown-linux-gnu". This path was found by running ['/b/sanitizer-x86_64-linux/build/build_default/./bin/clang', '--target=x86_64-unknown-linux-gnu', '-m64', '-print-runtime-dir'].
llvm-lit: /b/sanitizer-x86_64-linux/build/llvm-project/llvm/utils/lit/lit/main.py:72: note: The test suite configuration requested an individual test timeout of 0 seconds but a timeout of 900 seconds was requested on the command line. Forcing timeout to be 900 seconds.
-- Testing: 9980 tests, 80 workers --
Testing:  0.. 10.. 20.. 30.. 40.. 50.. 60.. 70
FAIL: libFuzzer-x86_64-static-libcxx-Linux :: fuzzer-finalstats.test (2426 of 9980)
******************** TEST 'libFuzzer-x86_64-static-libcxx-Linux :: fuzzer-finalstats.test' FAILED ********************
Exit Code: 1

Command Output (stderr):
--
RUN: at line 1: /b/sanitizer-x86_64-linux/build/build_default/./bin/clang    -Wthread-safety -Wthread-safety-reference -Wthread-safety-beta   --driver-mode=g++ -O2 -gline-tables-only -fsanitize=address,fuzzer -I/b/sanitizer-x86_64-linux/build/llvm-project/compiler-rt/lib/fuzzer -m64 /b/sanitizer-x86_64-linux/build/llvm-project/compiler-rt/test/fuzzer/SimpleTest.cpp -o /b/sanitizer-x86_64-linux/build/build_default/runtimes/runtimes-bins/compiler-rt/test/fuzzer/X86_64StaticLibcxxLinuxConfig/Output/fuzzer-finalstats.test.tmp-SimpleTest
+ /b/sanitizer-x86_64-linux/build/build_default/./bin/clang -Wthread-safety -Wthread-safety-reference -Wthread-safety-beta --driver-mode=g++ -O2 -gline-tables-only -fsanitize=address,fuzzer -I/b/sanitizer-x86_64-linux/build/llvm-project/compiler-rt/lib/fuzzer -m64 /b/sanitizer-x86_64-linux/build/llvm-project/compiler-rt/test/fuzzer/SimpleTest.cpp -o /b/sanitizer-x86_64-linux/build/build_default/runtimes/runtimes-bins/compiler-rt/test/fuzzer/X86_64StaticLibcxxLinuxConfig/Output/fuzzer-finalstats.test.tmp-SimpleTest
RUN: at line 2: /b/sanitizer-x86_64-linux/build/build_default/runtimes/runtimes-bins/compiler-rt/test/fuzzer/X86_64StaticLibcxxLinuxConfig/Output/fuzzer-finalstats.test.tmp-SimpleTest -seed=1 -runs=77 -print_final_stats=1 2>&1 | FileCheck /b/sanitizer-x86_64-linux/build/llvm-project/compiler-rt/test/fuzzer/fuzzer-finalstats.test --check-prefix=FINAL_STATS
+ /b/sanitizer-x86_64-linux/build/build_default/runtimes/runtimes-bins/compiler-rt/test/fuzzer/X86_64StaticLibcxxLinuxConfig/Output/fuzzer-finalstats.test.tmp-SimpleTest -seed=1 -runs=77 -print_final_stats=1
+ FileCheck /b/sanitizer-x86_64-linux/build/llvm-project/compiler-rt/test/fuzzer/fuzzer-finalstats.test --check-prefix=FINAL_STATS
RUN: at line 9: /b/sanitizer-x86_64-linux/build/build_default/runtimes/runtimes-bins/compiler-rt/test/fuzzer/X86_64StaticLibcxxLinuxConfig/Output/fuzzer-finalstats.test.tmp-SimpleTest /b/sanitizer-x86_64-linux/build/llvm-project/compiler-rt/test/fuzzer/dict1.txt -runs=33 -print_final_stats=1 2>&1 | FileCheck /b/sanitizer-x86_64-linux/build/llvm-project/compiler-rt/test/fuzzer/fuzzer-finalstats.test --check-prefix=FINAL_STATS1
+ FileCheck /b/sanitizer-x86_64-linux/build/llvm-project/compiler-rt/test/fuzzer/fuzzer-finalstats.test --check-prefix=FINAL_STATS1
+ /b/sanitizer-x86_64-linux/build/build_default/runtimes/runtimes-bins/compiler-rt/test/fuzzer/X86_64StaticLibcxxLinuxConfig/Output/fuzzer-finalstats.test.tmp-SimpleTest /b/sanitizer-x86_64-linux/build/llvm-project/compiler-rt/test/fuzzer/dict1.txt -runs=33 -print_final_stats=1
/b/sanitizer-x86_64-linux/build/llvm-project/compiler-rt/test/fuzzer/fuzzer-finalstats.test:10:15: error: FINAL_STATS1: expected string not found in input
FINAL_STATS1: stat::number_of_executed_units: 33
              ^
<stdin>:1:1: note: scanning from here
INFO: Running with entropic power schedule (0xFF, 100).
^
<stdin>:12:1: note: possible intended match here
stat::number_of_executed_units: 34
^

Input file: <stdin>
Check file: /b/sanitizer-x86_64-linux/build/llvm-project/compiler-rt/test/fuzzer/fuzzer-finalstats.test

-dump-input=help explains the following input dump.

Input was:
<<<<<<
            1: INFO: Running with entropic power schedule (0xFF, 100). 
check:10'0     X~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ error: no match found
            2: INFO: Seed: 3793552058 
check:10'0     ~~~~~~~~~~~~~~~~~~~~~~~
            3: INFO: Loaded 1 modules (9 inline 8-bit counters): 9 [0x55c8b7edf858, 0x55c8b7edf861),  
check:10'0     ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
            4: INFO: Loaded 1 PC tables (9 PCs): 9 [0x55c8b7edf868,0x55c8b7edf8f8),  
check:10'0     ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
Step 16 (test compiler-rt default) failure: test compiler-rt default (failure)
...
llvm-lit: /b/sanitizer-x86_64-linux/build/llvm-project/compiler-rt/test/lit.common.cfg.py:60: warning: Path reported by clang does not exist: "/b/sanitizer-x86_64-linux/build/build_default/lib/clang/19/lib/i386-unknown-linux-gnu". This path was found by running ['/b/sanitizer-x86_64-linux/build/build_default/./bin/clang', '--target=x86_64-unknown-linux-gnu', '-m32', '-print-runtime-dir'].
llvm-lit: /b/sanitizer-x86_64-linux/build/llvm-project/compiler-rt/test/lit.common.cfg.py:60: warning: Path reported by clang does not exist: "/b/sanitizer-x86_64-linux/build/build_default/lib/clang/19/lib/x86_64-unknown-linux-gnu". This path was found by running ['/b/sanitizer-x86_64-linux/build/build_default/./bin/clang', '--target=x86_64-unknown-linux-gnu', '-m64', '-print-runtime-dir'].
llvm-lit: /b/sanitizer-x86_64-linux/build/llvm-project/compiler-rt/test/lit.common.cfg.py:60: warning: Path reported by clang does not exist: "/b/sanitizer-x86_64-linux/build/build_default/lib/clang/19/lib/x86_64-unknown-linux-gnu". This path was found by running ['/b/sanitizer-x86_64-linux/build/build_default/./bin/clang', '--target=x86_64-unknown-linux-gnu', '-Wthread-safety', '-Wthread-safety-reference', '-Wthread-safety-beta', '-print-runtime-dir'].
llvm-lit: /b/sanitizer-x86_64-linux/build/llvm-project/compiler-rt/test/lit.common.cfg.py:60: warning: Path reported by clang does not exist: "/b/sanitizer-x86_64-linux/build/build_default/lib/clang/19/lib/x86_64-unknown-linux-gnu". This path was found by running ['/b/sanitizer-x86_64-linux/build/build_default/./bin/clang', '--target=x86_64-unknown-linux-gnu', '-m64', '-print-runtime-dir'].
llvm-lit: /b/sanitizer-x86_64-linux/build/llvm-project/compiler-rt/test/lit.common.cfg.py:60: warning: Path reported by clang does not exist: "/b/sanitizer-x86_64-linux/build/build_default/lib/clang/19/lib/x86_64-unknown-linux-gnu". This path was found by running ['/b/sanitizer-x86_64-linux/build/build_default/./bin/clang', '--target=x86_64-unknown-linux-gnu', '-m64', '-print-runtime-dir'].
llvm-lit: /b/sanitizer-x86_64-linux/build/llvm-project/compiler-rt/test/lit.common.cfg.py:60: warning: Path reported by clang does not exist: "/b/sanitizer-x86_64-linux/build/build_default/lib/clang/19/lib/x86_64-unknown-linux-gnu". This path was found by running ['/b/sanitizer-x86_64-linux/build/build_default/./bin/clang', '--target=x86_64-unknown-linux-gnu', '-m64', '-print-runtime-dir'].
llvm-lit: /b/sanitizer-x86_64-linux/build/llvm-project/compiler-rt/test/lit.common.cfg.py:60: warning: Path reported by clang does not exist: "/b/sanitizer-x86_64-linux/build/build_default/lib/clang/19/lib/x86_64-unknown-linux-gnu". This path was found by running ['/b/sanitizer-x86_64-linux/build/build_default/./bin/clang', '--target=x86_64-unknown-linux-gnu', '-m64', '-print-runtime-dir'].
llvm-lit: /b/sanitizer-x86_64-linux/build/llvm-project/llvm/utils/lit/lit/main.py:72: note: The test suite configuration requested an individual test timeout of 0 seconds but a timeout of 900 seconds was requested on the command line. Forcing timeout to be 900 seconds.
-- Testing: 9980 tests, 80 workers --
Testing:  0.. 10.. 20.. 30.. 40.. 50.. 60.. 70
FAIL: libFuzzer-x86_64-static-libcxx-Linux :: fuzzer-finalstats.test (2426 of 9980)
******************** TEST 'libFuzzer-x86_64-static-libcxx-Linux :: fuzzer-finalstats.test' FAILED ********************
Exit Code: 1

Command Output (stderr):
--
RUN: at line 1: /b/sanitizer-x86_64-linux/build/build_default/./bin/clang    -Wthread-safety -Wthread-safety-reference -Wthread-safety-beta   --driver-mode=g++ -O2 -gline-tables-only -fsanitize=address,fuzzer -I/b/sanitizer-x86_64-linux/build/llvm-project/compiler-rt/lib/fuzzer -m64 /b/sanitizer-x86_64-linux/build/llvm-project/compiler-rt/test/fuzzer/SimpleTest.cpp -o /b/sanitizer-x86_64-linux/build/build_default/runtimes/runtimes-bins/compiler-rt/test/fuzzer/X86_64StaticLibcxxLinuxConfig/Output/fuzzer-finalstats.test.tmp-SimpleTest
+ /b/sanitizer-x86_64-linux/build/build_default/./bin/clang -Wthread-safety -Wthread-safety-reference -Wthread-safety-beta --driver-mode=g++ -O2 -gline-tables-only -fsanitize=address,fuzzer -I/b/sanitizer-x86_64-linux/build/llvm-project/compiler-rt/lib/fuzzer -m64 /b/sanitizer-x86_64-linux/build/llvm-project/compiler-rt/test/fuzzer/SimpleTest.cpp -o /b/sanitizer-x86_64-linux/build/build_default/runtimes/runtimes-bins/compiler-rt/test/fuzzer/X86_64StaticLibcxxLinuxConfig/Output/fuzzer-finalstats.test.tmp-SimpleTest
RUN: at line 2: /b/sanitizer-x86_64-linux/build/build_default/runtimes/runtimes-bins/compiler-rt/test/fuzzer/X86_64StaticLibcxxLinuxConfig/Output/fuzzer-finalstats.test.tmp-SimpleTest -seed=1 -runs=77 -print_final_stats=1 2>&1 | FileCheck /b/sanitizer-x86_64-linux/build/llvm-project/compiler-rt/test/fuzzer/fuzzer-finalstats.test --check-prefix=FINAL_STATS
+ /b/sanitizer-x86_64-linux/build/build_default/runtimes/runtimes-bins/compiler-rt/test/fuzzer/X86_64StaticLibcxxLinuxConfig/Output/fuzzer-finalstats.test.tmp-SimpleTest -seed=1 -runs=77 -print_final_stats=1
+ FileCheck /b/sanitizer-x86_64-linux/build/llvm-project/compiler-rt/test/fuzzer/fuzzer-finalstats.test --check-prefix=FINAL_STATS
RUN: at line 9: /b/sanitizer-x86_64-linux/build/build_default/runtimes/runtimes-bins/compiler-rt/test/fuzzer/X86_64StaticLibcxxLinuxConfig/Output/fuzzer-finalstats.test.tmp-SimpleTest /b/sanitizer-x86_64-linux/build/llvm-project/compiler-rt/test/fuzzer/dict1.txt -runs=33 -print_final_stats=1 2>&1 | FileCheck /b/sanitizer-x86_64-linux/build/llvm-project/compiler-rt/test/fuzzer/fuzzer-finalstats.test --check-prefix=FINAL_STATS1
+ FileCheck /b/sanitizer-x86_64-linux/build/llvm-project/compiler-rt/test/fuzzer/fuzzer-finalstats.test --check-prefix=FINAL_STATS1
+ /b/sanitizer-x86_64-linux/build/build_default/runtimes/runtimes-bins/compiler-rt/test/fuzzer/X86_64StaticLibcxxLinuxConfig/Output/fuzzer-finalstats.test.tmp-SimpleTest /b/sanitizer-x86_64-linux/build/llvm-project/compiler-rt/test/fuzzer/dict1.txt -runs=33 -print_final_stats=1
/b/sanitizer-x86_64-linux/build/llvm-project/compiler-rt/test/fuzzer/fuzzer-finalstats.test:10:15: error: FINAL_STATS1: expected string not found in input
FINAL_STATS1: stat::number_of_executed_units: 33
              ^
<stdin>:1:1: note: scanning from here
INFO: Running with entropic power schedule (0xFF, 100).
^
<stdin>:12:1: note: possible intended match here
stat::number_of_executed_units: 34
^

Input file: <stdin>
Check file: /b/sanitizer-x86_64-linux/build/llvm-project/compiler-rt/test/fuzzer/fuzzer-finalstats.test

-dump-input=help explains the following input dump.

Input was:
<<<<<<
            1: INFO: Running with entropic power schedule (0xFF, 100). 
check:10'0     X~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ error: no match found
            2: INFO: Seed: 3793552058 
check:10'0     ~~~~~~~~~~~~~~~~~~~~~~~
            3: INFO: Loaded 1 modules (9 inline 8-bit counters): 9 [0x55c8b7edf858, 0x55c8b7edf861),  
check:10'0     ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
            4: INFO: Loaded 1 PC tables (9 PCs): 9 [0x55c8b7edf868,0x55c8b7edf8f8),  
check:10'0     ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

```

https://github.com/llvm/llvm-project/pull/97097

More information about the cfe-commits mailing list