[libc-commits] [libc] [libc][math] inline functions in shared math headers (PR #150703)

Sat Jul 26 04:27:24 PDT 2025

llvm-ci wrote:

LLVM Buildbot has detected a new failure on builder `fuchsia-x86_64-linux` running on `fuchsia-debian-64-us-central1-b-1` while building `libc` at step 4 "annotate".

Full details are available at: https://lab.llvm.org/buildbot/#/builders/11/builds/20432

<details>
<summary>Here is the relevant piece of the build log for the reference</summary>

```
Step 4 (annotate) failure: 'python ../llvm-zorg/zorg/buildbot/builders/annotated/fuchsia-linux.py ...' (failure)
...
[496/2522] Building CXX object libc/src/complex/generic/CMakeFiles/libc.src.complex.generic.cprojf.dir/cprojf.cpp.obj
[497/2522] Building CXX object libc/src/stdbit/CMakeFiles/libc.src.stdbit.stdc_has_single_bit_us.dir/stdc_has_single_bit_us.cpp.obj
[498/2522] Building CXX object libc/src/complex/generic/CMakeFiles/libc.src.complex.generic.cprojl.dir/cprojl.cpp.obj
[499/2522] Building CXX object libc/src/complex/generic/CMakeFiles/libc.src.complex.generic.cproj.dir/cproj.cpp.obj
[500/2522] Building CXX object libc/src/__support/CMakeFiles/libc.src.__support.freelist.dir/freelist.cpp.obj
[501/2522] Building CXX object libc/src/inttypes/CMakeFiles/libc.src.inttypes.imaxdiv.dir/imaxdiv.cpp.obj
[502/2522] Building CXX object libc/src/inttypes/CMakeFiles/libc.src.inttypes.imaxabs.dir/imaxabs.cpp.obj
[503/2522] Building CXX object libc/src/stdbit/CMakeFiles/libc.src.stdbit.stdc_has_single_bit_ull.dir/stdc_has_single_bit_ull.cpp.obj
[504/2522] Building CXX object libc/src/__support/StringUtil/CMakeFiles/libc.src.__support.StringUtil.error_to_string.dir/error_to_string.cpp.obj
[505/2522] Building CXX object libc/src/stdio/CMakeFiles/libc.src.stdio.vsscanf.dir/vsscanf.cpp.obj
FAILED: libc/src/stdio/CMakeFiles/libc.src.stdio.vsscanf.dir/vsscanf.cpp.obj 
/var/lib/buildbot/fuchsia-x86_64-linux/build/llvm-build-w8frl9fp/./bin/clang++ --target=armv7m-none-eabi -DLIBC_NAMESPACE=__llvm_libc_22_0_0_git -I/var/lib/buildbot/fuchsia-x86_64-linux/llvm-project/libc -isystem /var/lib/buildbot/fuchsia-x86_64-linux/build/llvm-build-w8frl9fp/include/armv7m-unknown-none-eabi --target=armv7m-none-eabi -Wno-atomic-alignment "-Dvfprintf(stream, format, vlist)=vprintf(format, vlist)" "-Dfprintf(stream, format, ...)=printf(format)" "-Dfputs(string, stream)=puts(string)" -D_LIBCPP_PRINT=1 -mthumb -fPIC -fno-semantic-interposition -fvisibility-inlines-hidden -Werror=date-time -Werror=unguarded-availability-new -Wall -Wextra -Wno-unused-parameter -Wwrite-strings -Wcast-qual -Wmissing-field-initializers -Wimplicit-fallthrough -Wcovered-switch-default -Wno-noexcept-type -Wnon-virtual-dtor -Wdelete-non-virtual-dtor -Wsuggest-override -Wstring-conversion -Wmisleading-indentation -Wctad-maybe-unsupported -ffunction-sections -fdata-sections -ffile-prefix-map=/var/lib/buildbot/fuchsia-x86_64-linux/build/llvm-build-w8frl9fp/runtimes/runtimes-armv7m-none-eabi-bins=../../../../llvm-project -ffile-prefix-map=/var/lib/buildbot/fuchsia-x86_64-linux/llvm-project/= -no-canonical-prefixes -Os -DNDEBUG --target=armv7m-none-eabi -DLIBC_QSORT_IMPL=LIBC_QSORT_HEAP_SORT -DLIBC_TYPES_TIME_T_IS_32_BIT -DLIBC_ADD_NULL_CHECKS "-DLIBC_MATH=(LIBC_MATH_SKIP_ACCURATE_PASS | LIBC_MATH_SMALL_TABLES)" -DLIBC_ERRNO_MODE=LIBC_ERRNO_MODE_EXTERNAL -fpie -ffreestanding -DLIBC_FULL_BUILD -nostdlibinc -ffixed-point -fno-builtin -fno-exceptions -fno-lax-vector-conversions -fno-unwind-tables -fno-asynchronous-unwind-tables -fno-rtti -ftrivial-auto-var-init=pattern -fno-omit-frame-pointer -Wall -Wextra -Werror -Wconversion -Wno-sign-conversion -Wdeprecated -Wno-c99-extensions -Wno-gnu-imaginary-constant -Wno-pedantic -Wimplicit-fallthrough -Wwrite-strings -Wextra-semi -Wnewline-eof -Wnonportable-system-include-path -Wstrict-prototypes -Wthread-safety -Wglobal-constructors -DLIBC_COPT_PUBLIC_PACKAGING -MD -MT libc/src/stdio/CMakeFiles/libc.src.stdio.vsscanf.dir/vsscanf.cpp.obj -MF libc/src/stdio/CMakeFiles/libc.src.stdio.vsscanf.dir/vsscanf.cpp.obj.d -o libc/src/stdio/CMakeFiles/libc.src.stdio.vsscanf.dir/vsscanf.cpp.obj -c /var/lib/buildbot/fuchsia-x86_64-linux/llvm-project/libc/src/stdio/vsscanf.cpp
In file included from /var/lib/buildbot/fuchsia-x86_64-linux/llvm-project/libc/src/stdio/vsscanf.cpp:14:
In file included from /var/lib/buildbot/fuchsia-x86_64-linux/llvm-project/libc/src/stdio/scanf_core/scanf_main.h:14:
In file included from /var/lib/buildbot/fuchsia-x86_64-linux/llvm-project/libc/src/stdio/scanf_core/converter.h:15:
In file included from /var/lib/buildbot/fuchsia-x86_64-linux/llvm-project/libc/src/stdio/scanf_core/core_structs.h:16:
/var/lib/buildbot/fuchsia-x86_64-linux/build/llvm-build-w8frl9fp/./lib/clang/22/include/inttypes.h:24:15: fatal error: 'inttypes.h' file not found
   24 | #include_next <inttypes.h>
      |               ^~~~~~~~~~~~
1 error generated.
[506/2522] Building CXX object libc/src/__support/CMakeFiles/libc.src.__support.freetrie.dir/freetrie.cpp.obj
[507/2522] Building CXX object libc/src/stdbit/CMakeFiles/libc.src.stdbit.stdc_bit_width_us.dir/stdc_bit_width_us.cpp.obj
[508/2522] Building CXX object libc/src/stdbit/CMakeFiles/libc.src.stdbit.stdc_bit_width_ull.dir/stdc_bit_width_ull.cpp.obj
[509/2522] Building CXX object libc/src/stdbit/CMakeFiles/libc.src.stdbit.stdc_bit_width_ui.dir/stdc_bit_width_ui.cpp.obj
[510/2522] Building CXX object libc/src/stdbit/CMakeFiles/libc.src.stdbit.stdc_bit_width_ul.dir/stdc_bit_width_ul.cpp.obj
[511/2522] Building CXX object libc/src/stdbit/CMakeFiles/libc.src.stdbit.stdc_bit_floor_us.dir/stdc_bit_floor_us.cpp.obj
[512/2522] Building CXX object libc/src/stdbit/CMakeFiles/libc.src.stdbit.stdc_bit_floor_ull.dir/stdc_bit_floor_ull.cpp.obj
[513/2522] Building CXX object libc/src/stdbit/CMakeFiles/libc.src.stdbit.stdc_bit_floor_ul.dir/stdc_bit_floor_ul.cpp.obj
[514/2522] Building CXX object libc/src/stdbit/CMakeFiles/libc.src.stdbit.stdc_bit_floor_uc.dir/stdc_bit_floor_uc.cpp.obj
[515/2522] Building CXX object libc/src/stdbit/CMakeFiles/libc.src.stdbit.stdc_bit_floor_ui.dir/stdc_bit_floor_ui.cpp.obj
[516/2522] Building CXX object libc/src/stdbit/CMakeFiles/libc.src.stdbit.stdc_bit_ceil_us.dir/stdc_bit_ceil_us.cpp.obj
[517/2522] Building CXX object libc/src/stdbit/CMakeFiles/libc.src.stdbit.stdc_bit_ceil_uc.dir/stdc_bit_ceil_uc.cpp.obj
[518/2522] Building CXX object libc/src/stdbit/CMakeFiles/libc.src.stdbit.stdc_bit_ceil_ui.dir/stdc_bit_ceil_ui.cpp.obj
[519/2522] Building CXX object libc/src/math/generic/CMakeFiles/libc.src.math.generic.iscanonical.dir/iscanonical.cpp.obj
[520/2522] Building CXX object libc/src/math/generic/CMakeFiles/libc.src.math.generic.issignaling.dir/issignaling.cpp.obj
[521/2522] Building CXX object libc/src/stdbit/CMakeFiles/libc.src.stdbit.stdc_first_leading_zero_ull.dir/stdc_first_leading_zero_ull.cpp.obj
[522/2522] Building CXX object libc/src/stdbit/CMakeFiles/libc.src.stdbit.stdc_bit_ceil_ul.dir/stdc_bit_ceil_ul.cpp.obj
[523/2522] Building CXX object libc/src/math/generic/CMakeFiles/libc.src.math.generic.iscanonicalf.dir/iscanonicalf.cpp.obj
[524/2522] Building CXX object libc/src/stdbit/CMakeFiles/libc.src.stdbit.stdc_bit_ceil_ull.dir/stdc_bit_ceil_ull.cpp.obj
[525/2522] Building CXX object libc/src/stdbit/CMakeFiles/libc.src.stdbit.stdc_first_trailing_zero_us.dir/stdc_first_trailing_zero_us.cpp.obj
[526/2522] Building CXX object libc/src/stdbit/CMakeFiles/libc.src.stdbit.stdc_first_leading_zero_uc.dir/stdc_first_leading_zero_uc.cpp.obj
[527/2522] Building CXX object libc/src/math/generic/CMakeFiles/libc.src.math.generic.issignalingl.dir/issignalingl.cpp.obj
[528/2522] Building CXX object libc/src/stdbit/CMakeFiles/libc.src.stdbit.stdc_first_leading_zero_us.dir/stdc_first_leading_zero_us.cpp.obj
[529/2522] Building CXX object libc/src/stdbit/CMakeFiles/libc.src.stdbit.stdc_first_leading_zero_ul.dir/stdc_first_leading_zero_ul.cpp.obj
[530/2522] Building CXX object libc/src/stdbit/CMakeFiles/libc.src.stdbit.stdc_first_leading_zero_ui.dir/stdc_first_leading_zero_ui.cpp.obj
[531/2522] Building CXX object libc/src/__support/CMakeFiles/libc.src.__support.freelist_heap.dir/freelist_heap.cpp.obj
[532/2522] Building CXX object libc/src/math/generic/CMakeFiles/libc.src.math.generic.issignalingf.dir/issignalingf.cpp.obj
[533/2522] Building CXX object libc/src/stdbit/CMakeFiles/libc.src.stdbit.stdc_first_leading_one_uc.dir/stdc_first_leading_one_uc.cpp.obj
[534/2522] Building CXX object libc/src/stdbit/CMakeFiles/libc.src.stdbit.stdc_first_leading_one_ul.dir/stdc_first_leading_one_ul.cpp.obj
Step 6 (build) failure: build (failure)
...
[496/2522] Building CXX object libc/src/complex/generic/CMakeFiles/libc.src.complex.generic.cprojf.dir/cprojf.cpp.obj
[497/2522] Building CXX object libc/src/stdbit/CMakeFiles/libc.src.stdbit.stdc_has_single_bit_us.dir/stdc_has_single_bit_us.cpp.obj
[498/2522] Building CXX object libc/src/complex/generic/CMakeFiles/libc.src.complex.generic.cprojl.dir/cprojl.cpp.obj
[499/2522] Building CXX object libc/src/complex/generic/CMakeFiles/libc.src.complex.generic.cproj.dir/cproj.cpp.obj
[500/2522] Building CXX object libc/src/__support/CMakeFiles/libc.src.__support.freelist.dir/freelist.cpp.obj
[501/2522] Building CXX object libc/src/inttypes/CMakeFiles/libc.src.inttypes.imaxdiv.dir/imaxdiv.cpp.obj
[502/2522] Building CXX object libc/src/inttypes/CMakeFiles/libc.src.inttypes.imaxabs.dir/imaxabs.cpp.obj
[503/2522] Building CXX object libc/src/stdbit/CMakeFiles/libc.src.stdbit.stdc_has_single_bit_ull.dir/stdc_has_single_bit_ull.cpp.obj
[504/2522] Building CXX object libc/src/__support/StringUtil/CMakeFiles/libc.src.__support.StringUtil.error_to_string.dir/error_to_string.cpp.obj
[505/2522] Building CXX object libc/src/stdio/CMakeFiles/libc.src.stdio.vsscanf.dir/vsscanf.cpp.obj
FAILED: libc/src/stdio/CMakeFiles/libc.src.stdio.vsscanf.dir/vsscanf.cpp.obj 
/var/lib/buildbot/fuchsia-x86_64-linux/build/llvm-build-w8frl9fp/./bin/clang++ --target=armv7m-none-eabi -DLIBC_NAMESPACE=__llvm_libc_22_0_0_git -I/var/lib/buildbot/fuchsia-x86_64-linux/llvm-project/libc -isystem /var/lib/buildbot/fuchsia-x86_64-linux/build/llvm-build-w8frl9fp/include/armv7m-unknown-none-eabi --target=armv7m-none-eabi -Wno-atomic-alignment "-Dvfprintf(stream, format, vlist)=vprintf(format, vlist)" "-Dfprintf(stream, format, ...)=printf(format)" "-Dfputs(string, stream)=puts(string)" -D_LIBCPP_PRINT=1 -mthumb -fPIC -fno-semantic-interposition -fvisibility-inlines-hidden -Werror=date-time -Werror=unguarded-availability-new -Wall -Wextra -Wno-unused-parameter -Wwrite-strings -Wcast-qual -Wmissing-field-initializers -Wimplicit-fallthrough -Wcovered-switch-default -Wno-noexcept-type -Wnon-virtual-dtor -Wdelete-non-virtual-dtor -Wsuggest-override -Wstring-conversion -Wmisleading-indentation -Wctad-maybe-unsupported -ffunction-sections -fdata-sections -ffile-prefix-map=/var/lib/buildbot/fuchsia-x86_64-linux/build/llvm-build-w8frl9fp/runtimes/runtimes-armv7m-none-eabi-bins=../../../../llvm-project -ffile-prefix-map=/var/lib/buildbot/fuchsia-x86_64-linux/llvm-project/= -no-canonical-prefixes -Os -DNDEBUG --target=armv7m-none-eabi -DLIBC_QSORT_IMPL=LIBC_QSORT_HEAP_SORT -DLIBC_TYPES_TIME_T_IS_32_BIT -DLIBC_ADD_NULL_CHECKS "-DLIBC_MATH=(LIBC_MATH_SKIP_ACCURATE_PASS | LIBC_MATH_SMALL_TABLES)" -DLIBC_ERRNO_MODE=LIBC_ERRNO_MODE_EXTERNAL -fpie -ffreestanding -DLIBC_FULL_BUILD -nostdlibinc -ffixed-point -fno-builtin -fno-exceptions -fno-lax-vector-conversions -fno-unwind-tables -fno-asynchronous-unwind-tables -fno-rtti -ftrivial-auto-var-init=pattern -fno-omit-frame-pointer -Wall -Wextra -Werror -Wconversion -Wno-sign-conversion -Wdeprecated -Wno-c99-extensions -Wno-gnu-imaginary-constant -Wno-pedantic -Wimplicit-fallthrough -Wwrite-strings -Wextra-semi -Wnewline-eof -Wnonportable-system-include-path -Wstrict-prototypes -Wthread-safety -Wglobal-constructors -DLIBC_COPT_PUBLIC_PACKAGING -MD -MT libc/src/stdio/CMakeFiles/libc.src.stdio.vsscanf.dir/vsscanf.cpp.obj -MF libc/src/stdio/CMakeFiles/libc.src.stdio.vsscanf.dir/vsscanf.cpp.obj.d -o libc/src/stdio/CMakeFiles/libc.src.stdio.vsscanf.dir/vsscanf.cpp.obj -c /var/lib/buildbot/fuchsia-x86_64-linux/llvm-project/libc/src/stdio/vsscanf.cpp
In file included from /var/lib/buildbot/fuchsia-x86_64-linux/llvm-project/libc/src/stdio/vsscanf.cpp:14:
In file included from /var/lib/buildbot/fuchsia-x86_64-linux/llvm-project/libc/src/stdio/scanf_core/scanf_main.h:14:
In file included from /var/lib/buildbot/fuchsia-x86_64-linux/llvm-project/libc/src/stdio/scanf_core/converter.h:15:
In file included from /var/lib/buildbot/fuchsia-x86_64-linux/llvm-project/libc/src/stdio/scanf_core/core_structs.h:16:
/var/lib/buildbot/fuchsia-x86_64-linux/build/llvm-build-w8frl9fp/./lib/clang/22/include/inttypes.h:24:15: fatal error: 'inttypes.h' file not found
   24 | #include_next <inttypes.h>
      |               ^~~~~~~~~~~~
1 error generated.
[506/2522] Building CXX object libc/src/__support/CMakeFiles/libc.src.__support.freetrie.dir/freetrie.cpp.obj
[507/2522] Building CXX object libc/src/stdbit/CMakeFiles/libc.src.stdbit.stdc_bit_width_us.dir/stdc_bit_width_us.cpp.obj
[508/2522] Building CXX object libc/src/stdbit/CMakeFiles/libc.src.stdbit.stdc_bit_width_ull.dir/stdc_bit_width_ull.cpp.obj
[509/2522] Building CXX object libc/src/stdbit/CMakeFiles/libc.src.stdbit.stdc_bit_width_ui.dir/stdc_bit_width_ui.cpp.obj
[510/2522] Building CXX object libc/src/stdbit/CMakeFiles/libc.src.stdbit.stdc_bit_width_ul.dir/stdc_bit_width_ul.cpp.obj
[511/2522] Building CXX object libc/src/stdbit/CMakeFiles/libc.src.stdbit.stdc_bit_floor_us.dir/stdc_bit_floor_us.cpp.obj
[512/2522] Building CXX object libc/src/stdbit/CMakeFiles/libc.src.stdbit.stdc_bit_floor_ull.dir/stdc_bit_floor_ull.cpp.obj
[513/2522] Building CXX object libc/src/stdbit/CMakeFiles/libc.src.stdbit.stdc_bit_floor_ul.dir/stdc_bit_floor_ul.cpp.obj
[514/2522] Building CXX object libc/src/stdbit/CMakeFiles/libc.src.stdbit.stdc_bit_floor_uc.dir/stdc_bit_floor_uc.cpp.obj
[515/2522] Building CXX object libc/src/stdbit/CMakeFiles/libc.src.stdbit.stdc_bit_floor_ui.dir/stdc_bit_floor_ui.cpp.obj
[516/2522] Building CXX object libc/src/stdbit/CMakeFiles/libc.src.stdbit.stdc_bit_ceil_us.dir/stdc_bit_ceil_us.cpp.obj
[517/2522] Building CXX object libc/src/stdbit/CMakeFiles/libc.src.stdbit.stdc_bit_ceil_uc.dir/stdc_bit_ceil_uc.cpp.obj
[518/2522] Building CXX object libc/src/stdbit/CMakeFiles/libc.src.stdbit.stdc_bit_ceil_ui.dir/stdc_bit_ceil_ui.cpp.obj
[519/2522] Building CXX object libc/src/math/generic/CMakeFiles/libc.src.math.generic.iscanonical.dir/iscanonical.cpp.obj
[520/2522] Building CXX object libc/src/math/generic/CMakeFiles/libc.src.math.generic.issignaling.dir/issignaling.cpp.obj
[521/2522] Building CXX object libc/src/stdbit/CMakeFiles/libc.src.stdbit.stdc_first_leading_zero_ull.dir/stdc_first_leading_zero_ull.cpp.obj
[522/2522] Building CXX object libc/src/stdbit/CMakeFiles/libc.src.stdbit.stdc_bit_ceil_ul.dir/stdc_bit_ceil_ul.cpp.obj
[523/2522] Building CXX object libc/src/math/generic/CMakeFiles/libc.src.math.generic.iscanonicalf.dir/iscanonicalf.cpp.obj
[524/2522] Building CXX object libc/src/stdbit/CMakeFiles/libc.src.stdbit.stdc_bit_ceil_ull.dir/stdc_bit_ceil_ull.cpp.obj
[525/2522] Building CXX object libc/src/stdbit/CMakeFiles/libc.src.stdbit.stdc_first_trailing_zero_us.dir/stdc_first_trailing_zero_us.cpp.obj
[526/2522] Building CXX object libc/src/stdbit/CMakeFiles/libc.src.stdbit.stdc_first_leading_zero_uc.dir/stdc_first_leading_zero_uc.cpp.obj
[527/2522] Building CXX object libc/src/math/generic/CMakeFiles/libc.src.math.generic.issignalingl.dir/issignalingl.cpp.obj
[528/2522] Building CXX object libc/src/stdbit/CMakeFiles/libc.src.stdbit.stdc_first_leading_zero_us.dir/stdc_first_leading_zero_us.cpp.obj
[529/2522] Building CXX object libc/src/stdbit/CMakeFiles/libc.src.stdbit.stdc_first_leading_zero_ul.dir/stdc_first_leading_zero_ul.cpp.obj
[530/2522] Building CXX object libc/src/stdbit/CMakeFiles/libc.src.stdbit.stdc_first_leading_zero_ui.dir/stdc_first_leading_zero_ui.cpp.obj
[531/2522] Building CXX object libc/src/__support/CMakeFiles/libc.src.__support.freelist_heap.dir/freelist_heap.cpp.obj
[532/2522] Building CXX object libc/src/math/generic/CMakeFiles/libc.src.math.generic.issignalingf.dir/issignalingf.cpp.obj
[533/2522] Building CXX object libc/src/stdbit/CMakeFiles/libc.src.stdbit.stdc_first_leading_one_uc.dir/stdc_first_leading_one_uc.cpp.obj
[534/2522] Building CXX object libc/src/stdbit/CMakeFiles/libc.src.stdbit.stdc_first_leading_one_ul.dir/stdc_first_leading_one_ul.cpp.obj

```

</details>

https://github.com/llvm/llvm-project/pull/150703