[libc-commits] [libc] [llvm] [libc][math] Refactor iscanonical-issignaling-nan family to header-only (PR #195581)
LLVM Continuous Integration via libc-commits
libc-commits at lists.llvm.org
Sun May 3 23:35:41 PDT 2026
llvm-ci wrote:
LLVM Buildbot has detected a new failure on builder `libc-aarch64-ubuntu-dbg` running on `libc-aarch64-ubuntu` while building `libc,utils` at step 4 "annotate".
Full details are available at: https://lab.llvm.org/buildbot/#/builders/104/builds/47390
<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/libc-linux.py ...' (failure)
...
[ RUN ] LlvmLibcGetRandomTest.InvalidFlag
[ OK ] LlvmLibcGetRandomTest.InvalidFlag (4 us)
[ RUN ] LlvmLibcGetRandomTest.InvalidBuffer
[ OK ] LlvmLibcGetRandomTest.InvalidBuffer (5 us)
[ RUN ] LlvmLibcGetRandomTest.ReturnsSize
[ OK ] LlvmLibcGetRandomTest.ReturnsSize (5 us)
[ RUN ] LlvmLibcGetRandomTest.CheckValue
[ OK ] LlvmLibcGetRandomTest.CheckValue (2 us)
Ran 4 tests. PASS: 4 FAIL: 0
[2126/2164] Building CXX object libc/test/shared/CMakeFiles/libc.test.shared.shared_math_constexpr_test.__unit__.__NO_ROUND_OPT.__build__.dir/shared_math_constexpr_test.cpp.o
FAILED: libc/test/shared/CMakeFiles/libc.test.shared.shared_math_constexpr_test.__unit__.__NO_ROUND_OPT.__build__.dir/shared_math_constexpr_test.cpp.o
/usr/bin/clang++ -DLIBC_NAMESPACE=__llvm_libc_20_0_0_git -D_DEBUG -I/home/libc-buildbot/libc-aarch64-ubuntu/libc-aarch64-ubuntu/llvm-project/libc -Ilibc -isystem libc/include -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 -Wno-comment -Wstring-conversion -Wno-pass-failed -fdiagnostics-color -g -D__LIBC_MISC_MATH_BASIC_OPS_OPT -D__LIBC_USE_BUILTIN_FMAX_FMIN -D__LIBC_USE_BUILTIN_FMAXF16_FMINF16 -Xclang -target-feature -Xclang +fullfp16 -DLIBC_QSORT_IMPL=LIBC_QSORT_QUICK_SORT -DLIBC_COPT_STRING_LENGTH_IMPL=clang_vector -DLIBC_COPT_FIND_FIRST_CHARACTER_IMPL=word -DLIBC_ADD_NULL_CHECKS -DLIBC_ERRNO_MODE=LIBC_ERRNO_MODE_DEFAULT -DLIBC_THREAD_MODE=LIBC_THREAD_MODE_PLATFORM -DLIBC_COPT_TIMEOUT_ENSURE_MONOTONICITY -DLIBC_CONF_WCTYPE_MODE=LIBC_WCTYPE_MODE_ASCII -DLIBC_COPT_RAW_MUTEX_DEFAULT_SPIN_COUNT=100 -fpie -Wall -Wextra -Wconversion -Wno-sign-conversion -Wimplicit-fallthrough -Wwrite-strings -Wno-c99-extensions -Wno-gnu-imaginary-constant -Wno-pedantic -Wstrict-prototypes -Wextra-semi -Wnewline-eof -Wnonportable-system-include-path -Wthread-safety -DLIBC_TEST=UNIT -Xclang -fconstexpr-steps=1000000 -std=gnu++17 -MD -MT libc/test/shared/CMakeFiles/libc.test.shared.shared_math_constexpr_test.__unit__.__NO_ROUND_OPT.__build__.dir/shared_math_constexpr_test.cpp.o -MF libc/test/shared/CMakeFiles/libc.test.shared.shared_math_constexpr_test.__unit__.__NO_ROUND_OPT.__build__.dir/shared_math_constexpr_test.cpp.o.d -o libc/test/shared/CMakeFiles/libc.test.shared.shared_math_constexpr_test.__unit__.__NO_ROUND_OPT.__build__.dir/shared_math_constexpr_test.cpp.o -c /home/libc-buildbot/libc-aarch64-ubuntu/libc-aarch64-ubuntu/llvm-project/libc/test/shared/shared_math_constexpr_test.cpp
error: unknown argument: '-fconstexpr-steps=1000000'
[2127/2164] Running unit test libc.test.src.stdlib.strfromf_test.__unit__
[==========] Running 8 tests from 1 test suite.
[ RUN ] LlvmLibcStrFromfTest.FloatDecimalFormat
[ OK ] LlvmLibcStrFromfTest.FloatDecimalFormat (41 us)
[ RUN ] LlvmLibcStrFromfTest.FloatHexExpFormat
[ OK ] LlvmLibcStrFromfTest.FloatHexExpFormat (7 us)
[ RUN ] LlvmLibcStrFromfTest.FloatDecimalAutoFormat
[ OK ] LlvmLibcStrFromfTest.FloatDecimalAutoFormat (39 us)
[ RUN ] LlvmLibcStrFromfTest.FloatDecimalExpFormat
[ OK ] LlvmLibcStrFromfTest.FloatDecimalExpFormat (21 us)
[ RUN ] LlvmLibcStrFromfTest.ImproperFormatString
[ OK ] LlvmLibcStrFromfTest.ImproperFormatString (6 us)
[ RUN ] LlvmLibcStrFromfTest.InsufficientBufferSize
[ OK ] LlvmLibcStrFromfTest.InsufficientBufferSize (38 us)
[ RUN ] LlvmLibcStrFromfTest.InfAndNanValues
[ OK ] LlvmLibcStrFromfTest.InfAndNanValues (0 ns)
[ RUN ] LlvmLibcStrFromfTest.CharsWrittenOverflow
[ OK ] LlvmLibcStrFromfTest.CharsWrittenOverflow (665 ms)
Ran 8 tests. PASS: 8 FAIL: 0
[2128/2164] Running unit test libc.test.src.sys.random.linux.getrandom_test.__NO_MISC_MATH_BASIC_OPS_OPT
[==========] Running 4 tests from 1 test suite.
[ RUN ] LlvmLibcGetRandomTest.InvalidFlag
[ OK ] LlvmLibcGetRandomTest.InvalidFlag (4 us)
[ RUN ] LlvmLibcGetRandomTest.InvalidBuffer
[ OK ] LlvmLibcGetRandomTest.InvalidBuffer (4 us)
[ RUN ] LlvmLibcGetRandomTest.ReturnsSize
[ OK ] LlvmLibcGetRandomTest.ReturnsSize (8 us)
[ RUN ] LlvmLibcGetRandomTest.CheckValue
[ OK ] LlvmLibcGetRandomTest.CheckValue (3 us)
Ran 4 tests. PASS: 4 FAIL: 0
[2129/2164] Building CXX object libc/test/shared/CMakeFiles/libc.test.shared.shared_math_constexpr_test.__unit__.__NO_MISC_MATH_BASIC_OPS_OPT.__build__.dir/shared_math_constexpr_test.cpp.o
FAILED: libc/test/shared/CMakeFiles/libc.test.shared.shared_math_constexpr_test.__unit__.__NO_MISC_MATH_BASIC_OPS_OPT.__build__.dir/shared_math_constexpr_test.cpp.o
/usr/bin/clang++ -DLIBC_NAMESPACE=__llvm_libc_20_0_0_git -D_DEBUG -I/home/libc-buildbot/libc-aarch64-ubuntu/libc-aarch64-ubuntu/llvm-project/libc -Ilibc -isystem libc/include -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 -Wno-comment -Wstring-conversion -Wno-pass-failed -fdiagnostics-color -g -D__LIBC_USE_BUILTIN_CEIL_FLOOR_RINT_TRUNC -D__LIBC_USE_BUILTIN_ROUND -DLIBC_QSORT_IMPL=LIBC_QSORT_QUICK_SORT -DLIBC_COPT_STRING_LENGTH_IMPL=clang_vector -DLIBC_COPT_FIND_FIRST_CHARACTER_IMPL=word -DLIBC_ADD_NULL_CHECKS -DLIBC_ERRNO_MODE=LIBC_ERRNO_MODE_DEFAULT -DLIBC_THREAD_MODE=LIBC_THREAD_MODE_PLATFORM -DLIBC_COPT_TIMEOUT_ENSURE_MONOTONICITY -DLIBC_CONF_WCTYPE_MODE=LIBC_WCTYPE_MODE_ASCII -DLIBC_COPT_RAW_MUTEX_DEFAULT_SPIN_COUNT=100 -fpie -Wall -Wextra -Wconversion -Wno-sign-conversion -Wimplicit-fallthrough -Wwrite-strings -Wno-c99-extensions -Wno-gnu-imaginary-constant -Wno-pedantic -Wstrict-prototypes -Wextra-semi -Wnewline-eof -Wnonportable-system-include-path -Wthread-safety -DLIBC_TEST=UNIT -Xclang -fconstexpr-steps=1000000 -std=gnu++17 -MD -MT libc/test/shared/CMakeFiles/libc.test.shared.shared_math_constexpr_test.__unit__.__NO_MISC_MATH_BASIC_OPS_OPT.__build__.dir/shared_math_constexpr_test.cpp.o -MF libc/test/shared/CMakeFiles/libc.test.shared.shared_math_constexpr_test.__unit__.__NO_MISC_MATH_BASIC_OPS_OPT.__build__.dir/shared_math_constexpr_test.cpp.o.d -o libc/test/shared/CMakeFiles/libc.test.shared.shared_math_constexpr_test.__unit__.__NO_MISC_MATH_BASIC_OPS_OPT.__build__.dir/shared_math_constexpr_test.cpp.o -c /home/libc-buildbot/libc-aarch64-ubuntu/libc-aarch64-ubuntu/llvm-project/libc/test/shared/shared_math_constexpr_test.cpp
error: unknown argument: '-fconstexpr-steps=1000000'
[2130/2164] Building CXX object libc/test/shared/CMakeFiles/libc.test.shared.shared_math_constexpr_test.__unit__.__build__.dir/shared_math_constexpr_test.cpp.o
FAILED: libc/test/shared/CMakeFiles/libc.test.shared.shared_math_constexpr_test.__unit__.__build__.dir/shared_math_constexpr_test.cpp.o
Step 7 (libc-unit-tests) failure: libc-unit-tests (failure)
...
[ RUN ] LlvmLibcGetRandomTest.InvalidFlag
[ OK ] LlvmLibcGetRandomTest.InvalidFlag (4 us)
[ RUN ] LlvmLibcGetRandomTest.InvalidBuffer
[ OK ] LlvmLibcGetRandomTest.InvalidBuffer (5 us)
[ RUN ] LlvmLibcGetRandomTest.ReturnsSize
[ OK ] LlvmLibcGetRandomTest.ReturnsSize (5 us)
[ RUN ] LlvmLibcGetRandomTest.CheckValue
[ OK ] LlvmLibcGetRandomTest.CheckValue (2 us)
Ran 4 tests. PASS: 4 FAIL: 0
[2126/2164] Building CXX object libc/test/shared/CMakeFiles/libc.test.shared.shared_math_constexpr_test.__unit__.__NO_ROUND_OPT.__build__.dir/shared_math_constexpr_test.cpp.o
FAILED: libc/test/shared/CMakeFiles/libc.test.shared.shared_math_constexpr_test.__unit__.__NO_ROUND_OPT.__build__.dir/shared_math_constexpr_test.cpp.o
/usr/bin/clang++ -DLIBC_NAMESPACE=__llvm_libc_20_0_0_git -D_DEBUG -I/home/libc-buildbot/libc-aarch64-ubuntu/libc-aarch64-ubuntu/llvm-project/libc -Ilibc -isystem libc/include -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 -Wno-comment -Wstring-conversion -Wno-pass-failed -fdiagnostics-color -g -D__LIBC_MISC_MATH_BASIC_OPS_OPT -D__LIBC_USE_BUILTIN_FMAX_FMIN -D__LIBC_USE_BUILTIN_FMAXF16_FMINF16 -Xclang -target-feature -Xclang +fullfp16 -DLIBC_QSORT_IMPL=LIBC_QSORT_QUICK_SORT -DLIBC_COPT_STRING_LENGTH_IMPL=clang_vector -DLIBC_COPT_FIND_FIRST_CHARACTER_IMPL=word -DLIBC_ADD_NULL_CHECKS -DLIBC_ERRNO_MODE=LIBC_ERRNO_MODE_DEFAULT -DLIBC_THREAD_MODE=LIBC_THREAD_MODE_PLATFORM -DLIBC_COPT_TIMEOUT_ENSURE_MONOTONICITY -DLIBC_CONF_WCTYPE_MODE=LIBC_WCTYPE_MODE_ASCII -DLIBC_COPT_RAW_MUTEX_DEFAULT_SPIN_COUNT=100 -fpie -Wall -Wextra -Wconversion -Wno-sign-conversion -Wimplicit-fallthrough -Wwrite-strings -Wno-c99-extensions -Wno-gnu-imaginary-constant -Wno-pedantic -Wstrict-prototypes -Wextra-semi -Wnewline-eof -Wnonportable-system-include-path -Wthread-safety -DLIBC_TEST=UNIT -Xclang -fconstexpr-steps=1000000 -std=gnu++17 -MD -MT libc/test/shared/CMakeFiles/libc.test.shared.shared_math_constexpr_test.__unit__.__NO_ROUND_OPT.__build__.dir/shared_math_constexpr_test.cpp.o -MF libc/test/shared/CMakeFiles/libc.test.shared.shared_math_constexpr_test.__unit__.__NO_ROUND_OPT.__build__.dir/shared_math_constexpr_test.cpp.o.d -o libc/test/shared/CMakeFiles/libc.test.shared.shared_math_constexpr_test.__unit__.__NO_ROUND_OPT.__build__.dir/shared_math_constexpr_test.cpp.o -c /home/libc-buildbot/libc-aarch64-ubuntu/libc-aarch64-ubuntu/llvm-project/libc/test/shared/shared_math_constexpr_test.cpp
error: unknown argument: '-fconstexpr-steps=1000000'
[2127/2164] Running unit test libc.test.src.stdlib.strfromf_test.__unit__
[==========] Running 8 tests from 1 test suite.
[ RUN ] LlvmLibcStrFromfTest.FloatDecimalFormat
[ OK ] LlvmLibcStrFromfTest.FloatDecimalFormat (41 us)
[ RUN ] LlvmLibcStrFromfTest.FloatHexExpFormat
[ OK ] LlvmLibcStrFromfTest.FloatHexExpFormat (7 us)
[ RUN ] LlvmLibcStrFromfTest.FloatDecimalAutoFormat
[ OK ] LlvmLibcStrFromfTest.FloatDecimalAutoFormat (39 us)
[ RUN ] LlvmLibcStrFromfTest.FloatDecimalExpFormat
[ OK ] LlvmLibcStrFromfTest.FloatDecimalExpFormat (21 us)
[ RUN ] LlvmLibcStrFromfTest.ImproperFormatString
[ OK ] LlvmLibcStrFromfTest.ImproperFormatString (6 us)
[ RUN ] LlvmLibcStrFromfTest.InsufficientBufferSize
[ OK ] LlvmLibcStrFromfTest.InsufficientBufferSize (38 us)
[ RUN ] LlvmLibcStrFromfTest.InfAndNanValues
[ OK ] LlvmLibcStrFromfTest.InfAndNanValues (0 ns)
[ RUN ] LlvmLibcStrFromfTest.CharsWrittenOverflow
[ OK ] LlvmLibcStrFromfTest.CharsWrittenOverflow (665 ms)
Ran 8 tests. PASS: 8 FAIL: 0
[2128/2164] Running unit test libc.test.src.sys.random.linux.getrandom_test.__NO_MISC_MATH_BASIC_OPS_OPT
[==========] Running 4 tests from 1 test suite.
[ RUN ] LlvmLibcGetRandomTest.InvalidFlag
[ OK ] LlvmLibcGetRandomTest.InvalidFlag (4 us)
[ RUN ] LlvmLibcGetRandomTest.InvalidBuffer
[ OK ] LlvmLibcGetRandomTest.InvalidBuffer (4 us)
[ RUN ] LlvmLibcGetRandomTest.ReturnsSize
[ OK ] LlvmLibcGetRandomTest.ReturnsSize (8 us)
[ RUN ] LlvmLibcGetRandomTest.CheckValue
[ OK ] LlvmLibcGetRandomTest.CheckValue (3 us)
Ran 4 tests. PASS: 4 FAIL: 0
[2129/2164] Building CXX object libc/test/shared/CMakeFiles/libc.test.shared.shared_math_constexpr_test.__unit__.__NO_MISC_MATH_BASIC_OPS_OPT.__build__.dir/shared_math_constexpr_test.cpp.o
FAILED: libc/test/shared/CMakeFiles/libc.test.shared.shared_math_constexpr_test.__unit__.__NO_MISC_MATH_BASIC_OPS_OPT.__build__.dir/shared_math_constexpr_test.cpp.o
/usr/bin/clang++ -DLIBC_NAMESPACE=__llvm_libc_20_0_0_git -D_DEBUG -I/home/libc-buildbot/libc-aarch64-ubuntu/libc-aarch64-ubuntu/llvm-project/libc -Ilibc -isystem libc/include -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 -Wno-comment -Wstring-conversion -Wno-pass-failed -fdiagnostics-color -g -D__LIBC_USE_BUILTIN_CEIL_FLOOR_RINT_TRUNC -D__LIBC_USE_BUILTIN_ROUND -DLIBC_QSORT_IMPL=LIBC_QSORT_QUICK_SORT -DLIBC_COPT_STRING_LENGTH_IMPL=clang_vector -DLIBC_COPT_FIND_FIRST_CHARACTER_IMPL=word -DLIBC_ADD_NULL_CHECKS -DLIBC_ERRNO_MODE=LIBC_ERRNO_MODE_DEFAULT -DLIBC_THREAD_MODE=LIBC_THREAD_MODE_PLATFORM -DLIBC_COPT_TIMEOUT_ENSURE_MONOTONICITY -DLIBC_CONF_WCTYPE_MODE=LIBC_WCTYPE_MODE_ASCII -DLIBC_COPT_RAW_MUTEX_DEFAULT_SPIN_COUNT=100 -fpie -Wall -Wextra -Wconversion -Wno-sign-conversion -Wimplicit-fallthrough -Wwrite-strings -Wno-c99-extensions -Wno-gnu-imaginary-constant -Wno-pedantic -Wstrict-prototypes -Wextra-semi -Wnewline-eof -Wnonportable-system-include-path -Wthread-safety -DLIBC_TEST=UNIT -Xclang -fconstexpr-steps=1000000 -std=gnu++17 -MD -MT libc/test/shared/CMakeFiles/libc.test.shared.shared_math_constexpr_test.__unit__.__NO_MISC_MATH_BASIC_OPS_OPT.__build__.dir/shared_math_constexpr_test.cpp.o -MF libc/test/shared/CMakeFiles/libc.test.shared.shared_math_constexpr_test.__unit__.__NO_MISC_MATH_BASIC_OPS_OPT.__build__.dir/shared_math_constexpr_test.cpp.o.d -o libc/test/shared/CMakeFiles/libc.test.shared.shared_math_constexpr_test.__unit__.__NO_MISC_MATH_BASIC_OPS_OPT.__build__.dir/shared_math_constexpr_test.cpp.o -c /home/libc-buildbot/libc-aarch64-ubuntu/libc-aarch64-ubuntu/llvm-project/libc/test/shared/shared_math_constexpr_test.cpp
error: unknown argument: '-fconstexpr-steps=1000000'
[2130/2164] Building CXX object libc/test/shared/CMakeFiles/libc.test.shared.shared_math_constexpr_test.__unit__.__build__.dir/shared_math_constexpr_test.cpp.o
FAILED: libc/test/shared/CMakeFiles/libc.test.shared.shared_math_constexpr_test.__unit__.__build__.dir/shared_math_constexpr_test.cpp.o
```
</details>
https://github.com/llvm/llvm-project/pull/195581
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