[libc] gcc build failures on github action runners #119266
Description
These were spotted in #119104.
The first one is at https://github.com/llvm/llvm-project/actions/runs/12217700280/job/34082285018?pr=119104
In file included from /home/runner/work/llvm-project/llvm-project/libc/src/__support/OSUtil/linux/syscall.h:13,
from /home/runner/work/llvm-project/llvm-project/libc/src/__support/OSUtil/syscall.h:15,
from /home/runner/work/llvm-project/llvm-project/libc/src/unistd/linux/pread.cpp:11:
/home/runner/work/llvm-project/llvm-project/libc/src/unistd/linux/pread.cpp:21:29: error: ‘ssize_t __llvm_libc_20_0_0_git::pread(int, void*, size_t, off_t)’ aliased to external symbol ‘pread’
[ 92%] Built target libc.src.unistd.linux.lseek
21 | LLVM_LIBC_FUNCTION(ssize_t, pread,
| ^~~~~
/home/runner/work/llvm-project/llvm-project/libc/src/__support/common.h:46:34: note: in definition of macro ‘LLVM_LIBC_FUNCTION_IMPL’
46 | decltype(LIBC_NAMESPACE::name) name [[gnu::alias(#name)]]; \
| ^~~~
/home/runner/work/llvm-project/llvm-project/libc/src/unistd/linux/pread.cpp:21:1: note: in expansion of macro ‘LLVM_LIBC_FUNCTION’
21 | LLVM_LIBC_FUNCTION(ssize_t, pread,
| ^~~~~~~~~~~~~~~~~~
gmake[2]: *** [libc/src/unistd/linux/CMakeFiles/libc.src.unistd.linux.pread.dir/build.make:79: libc/src/unistd/linux/CMakeFiles/libc.src.unistd.linux.pread.dir/pread.cpp.o] Error 1
gmake[1]: *** [CMakeFiles/Makefile2:147979: libc/src/unistd/linux/CMakeFiles/libc.src.unistd.linux.pread.dir/all] Error 2
[ 92%] Built target libc.src.unistd.linux.link
[ 92%] Built target libc.src.unistd.linux.pipe
[ 92%] Built target libc.src.unistd.linux.pwrite
[ 92%] Built target libc.src.unistd.linux.linkat
[ 92%] Built target libc.src.unistd.linux.pipe2
In file included from /home/runner/work/llvm-project/llvm-project/libc/src/__support/OSUtil/linux/syscall.h:13,
from /home/runner/work/llvm-project/llvm-project/libc/src/__support/OSUtil/syscall.h:15,
from /home/runner/work/llvm-project/llvm-project/libc/src/unistd/linux/readlinkat.cpp:11:
/home/runner/work/llvm-project/llvm-project/libc/src/unistd/linux/readlinkat.cpp:21:29: error: ‘ssize_t __llvm_libc_20_0_0_git::readlinkat(int, const char*, char*, size_t)’ aliased to external symbol ‘readlinkat’
21 | LLVM_LIBC_FUNCTION(ssize_t, readlinkat,
| ^~~~~~~~~~
/home/runner/work/llvm-project/llvm-project/libc/src/__support/common.h:46:34: note: in definition of macro ‘LLVM_LIBC_FUNCTION_IMPL’
46 | decltype(LIBC_NAMESPACE::name) name [[gnu::alias(#name)]]; \
| ^~~~
/home/runner/work/llvm-project/llvm-project/libc/src/unistd/linux/readlinkat.cpp:21:1: note: in expansion of macro ‘LLVM_LIBC_FUNCTION’
21 | LLVM_LIBC_FUNCTION(ssize_t, readlinkat,
| ^~~~~~~~~~~~~~~~~~
/home/runner/work/llvm-project/llvm-project/libc/src/unistd/linux/readlinkat.cpp:21:29: error: ‘ssize_t __llvm_libc_20_0_0_git::readlinkat(int, const char*, char*, size_t)’ specifies less restrictive attributes than its target ‘ssize_t readlinkat(int, const char*, char*, size_t)’: ‘leaf’, ‘nonnull’, ‘nothrow’ [-Werror=missing-attributes]
21 | LLVM_LIBC_FUNCTION(ssize_t, readlinkat,
| ^~~~~~~~~~
/home/runner/work/llvm-project/llvm-project/libc/src/__support/common.h:46:34: note: in definition of macro ‘LLVM_LIBC_FUNCTION_IMPL’
46 | decltype(LIBC_NAMESPACE::name) name [[gnu::alias(#name)]]; \
| ^~~~
/home/runner/work/llvm-project/llvm-project/libc/src/unistd/linux/readlinkat.cpp:21:1: note: in expansion of macro ‘LLVM_LIBC_FUNCTION’
21 | LLVM_LIBC_FUNCTION(ssize_t, readlinkat,
| ^~~~~~~~~~~~~~~~~~
In file included from /usr/include/features.h:486,
from /usr/include/unistd.h:25,
from /home/runner/work/llvm-project/llvm-project/libc/src/unistd/readlinkat.h:13,
from /home/runner/work/llvm-project/llvm-project/libc/src/unistd/linux/readlinkat.cpp:9:
/usr/include/x86_64-linux-gnu/bits/unistd.h:144:1: note: ‘ssize_t __llvm_libc_20_0_0_git::readlinkat(int, const char*, char*, size_t)’ target declared here
144 | __NTH (readlinkat (int __fd, const char *__restrict __path,
| ^~~~~
cc1plus: all warnings being treated as errors
gmake[2]: *** [libc/src/unistd/linux/CMakeFiles/libc.src.unistd.linux.readlinkat.dir/build.make:79: libc/src/unistd/linux/CMakeFiles/libc.src.unistd.linux.readlinkat.dir/readlinkat.cpp.o] Error 1
gmake[1]: *** [CMakeFiles/Makefile2:148299: libc/src/unistd/linux/CMakeFiles/libc.src.unistd.linux.readlinkat.dir/all] Error 2
[ 92%] Built target libc.src.unistd.linux.rmdir
In file included from /home/runner/work/llvm-project/llvm-project/libc/src/__support/OSUtil/linux/syscall.h:13,
from /home/runner/work/llvm-project/llvm-project/libc/src/__support/OSUtil/syscall.h:15,
from /home/runner/work/llvm-project/llvm-project/libc/src/unistd/linux/readlink.cpp:11:
/home/runner/work/llvm-project/llvm-project/libc/src/unistd/linux/readlink.cpp:21:29: error: ‘ssize_t __llvm_libc_20_0_0_git::readlink(const char*, char*, size_t)’ aliased to external symbol ‘readlink’
21 | LLVM_LIBC_FUNCTION(ssize_t, readlink,
| ^~~~~~~~
/home/runner/work/llvm-project/llvm-project/libc/src/__support/common.h:46:34: note: in definition of macro ‘LLVM_LIBC_FUNCTION_IMPL’
46 | decltype(LIBC_NAMESPACE::name) name [[gnu::alias(#name)]]; \
| ^~~~
/home/runner/work/llvm-project/llvm-project/libc/src/unistd/linux/readlink.cpp:21:1: note: in expansion of macro ‘LLVM_LIBC_FUNCTION’
21 | LLVM_LIBC_FUNCTION(ssize_t, readlink,
| ^~~~~~~~~~~~~~~~~~
/home/runner/work/llvm-project/llvm-project/libc/src/unistd/linux/readlink.cpp:21:29: error: ‘ssize_t __llvm_libc_20_0_0_git::readlink(const char*, char*, size_t)’ specifies less restrictive attributes than its target ‘ssize_t readlink(const char*, char*, size_t)’: ‘leaf’, ‘nonnull’, ‘nothrow’ [-Werror=missing-attributes]
21 | LLVM_LIBC_FUNCTION(ssize_t, readlink,
| ^~~~~~~~
/home/runner/work/llvm-project/llvm-project/libc/src/__support/common.h:46:34: note: in definition of macro ‘LLVM_LIBC_FUNCTION_IMPL’
46 | decltype(LIBC_NAMESPACE::name) name [[gnu::alias(#name)]]; \
| ^~~~
/home/runner/work/llvm-project/llvm-project/libc/src/unistd/linux/readlink.cpp:21:1: note: in expansion of macro ‘LLVM_LIBC_FUNCTION’
21 | LLVM_LIBC_FUNCTION(ssize_t, readlink,
| ^~~~~~~~~~~~~~~~~~
In file included from /usr/include/features.h:486,
from /usr/include/unistd.h:25,
from /home/runner/work/llvm-project/llvm-project/libc/src/unistd/readlink.h:13,
from /home/runner/work/llvm-project/llvm-project/libc/src/unistd/linux/readlink.cpp:9:
/usr/include/x86_64-linux-gnu/bits/unistd.h:116:1: note: ‘ssize_t __llvm_libc_20_0_0_git::readlink(const char*, char*, size_t)’ target declared here
116 | __NTH (readlink (const char *__restrict __path, char *__restrict __buf,
| ^~~~~
cc1plus: all warnings being treated as errors
gmake[2]: *** [libc/src/unistd/linux/CMakeFiles/libc.src.unistd.linux.readlink.dir/build.make:79: libc/src/unistd/linux/CMakeFiles/libc.src.unistd.linux.readlink.dir/readlink.cpp.o] Error 1
gmake[1]: *** [CMakeFiles/Makefile2:148235: libc/src/unistd/linux/CMakeFiles/libc.src.unistd.linux.readlink.dir/all] Error 2
[ 92%] Built target libc.src.unistd.linux.symlinkat
[ 92%] Built target libc.src.unistd.linux.symlink
[ 92%] Built target libc.src.unistd.linux.unlinkat
[ 92%] Built target libc.src.unistd.linux.truncate
In file included from /home/runner/work/llvm-project/llvm-project/libc/src/__support/OSUtil/linux/syscall.h:13,
from /home/runner/work/llvm-project/llvm-project/libc/src/__support/OSUtil/syscall.h:15,
from /home/runner/work/llvm-project/llvm-project/libc/src/unistd/linux/getcwd.cpp:11:
/home/runner/work/llvm-project/llvm-project/libc/src/unistd/linux/getcwd.cpp:38:28: error: ‘char* __llvm_libc_20_0_0_git::getcwd(char*, size_t)’ aliased to external symbol ‘getcwd’
38 | LLVM_LIBC_FUNCTION(char *, getcwd, (char *buf, size_t size)) {
| ^~~~~~
/home/runner/work/llvm-project/llvm-project/libc/src/__support/common.h:46:34: note: in definition of macro ‘LLVM_LIBC_FUNCTION_IMPL’
46 | decltype(LIBC_NAMESPACE::name) name [[gnu::alias(#name)]]; \
| ^~~~
/home/runner/work/llvm-project/llvm-project/libc/src/unistd/linux/getcwd.cpp:38:1: note: in expansion of macro ‘LLVM_LIBC_FUNCTION’
38 | LLVM_LIBC_FUNCTION(char *, getcwd, (char *buf, size_t size)) {
| ^~~~~~~~~~~~~~~~~~
/home/runner/work/llvm-project/llvm-project/libc/src/unistd/linux/getcwd.cpp:38:28: error: ‘char* __llvm_libc_20_0_0_git::getcwd(char*, size_t)’ specifies less restrictive attributes than its target ‘char* getcwd(char*, size_t)’: ‘leaf’, ‘nothrow’ [-Werror=missing-attributes]
38 | LLVM_LIBC_FUNCTION(char *, getcwd, (char *buf, size_t size)) {
| ^~~~~~
/home/runner/work/llvm-project/llvm-project/libc/src/__support/common.h:46:34: note: in definition of macro ‘LLVM_LIBC_FUNCTION_IMPL’
46 | decltype(LIBC_NAMESPACE::name) name [[gnu::alias(#name)]]; \
| ^~~~
/home/runner/work/llvm-project/llvm-project/libc/src/unistd/linux/getcwd.cpp:38:1: note: in expansion of macro ‘LLVM_LIBC_FUNCTION’
38 | LLVM_LIBC_FUNCTION(char *, getcwd, (char *buf, size_t size)) {
| ^~~~~~~~~~~~~~~~~~
In file included from /usr/include/features.h:486,
from /usr/include/unistd.h:25,
from /home/runner/work/llvm-project/llvm-project/libc/src/unistd/getcwd.h:13,
from /home/runner/work/llvm-project/llvm-project/libc/src/unistd/linux/getcwd.cpp:9:
/usr/include/x86_64-linux-gnu/bits/unistd.h:164:1: note: ‘char* __llvm_libc_20_0_0_git::getcwd(char*, size_t)’ target declared here
164 | __NTH (getcwd (char *__buf, size_t __size))
| ^~~~~
cc1plus: all warnings being treated as errors
gmake[2]: *** [libc/src/unistd/linux/CMakeFiles/libc.src.unistd.linux.getcwd.dir/build.make:79: libc/src/unistd/linux/CMakeFiles/libc.src.unistd.linux.getcwd.dir/getcwd.cpp.o] Error 1
gmake[1]: *** [CMakeFiles/Makefile2:147175: libc/src/unistd/linux/CMakeFiles/libc.src.unistd.linux.getcwd.dir/all] Error 2
gmake: *** [Makefile:136: all] Error 2
The second one is at https://github.com/llvm/llvm-project/actions/runs/12218362957/job/34083763790?pr=119104
FAILED: libc/src/math/generic/CMakeFiles/libc.src.math.generic.sinf16.dir/sinf16.cpp.o
sccache /usr/bin/g++ -DLIBC_NAMESPACE=__llvm_libc_20_0_0_git -I/home/runner/work/llvm-project/llvm-project/libc -isystem /home/runner/work/llvm-project/llvm-project/build/libc/include -fvisibility-inlines-hidden -Werror=date-time -fno-lifetime-dse -Wall -Wextra -Wno-unused-parameter -Wwrite-strings -Wcast-qual -Wno-missing-field-initializers -Wimplicit-fallthrough -Wno-nonnull -Wno-class-memaccess -Wno-redundant-move -Wno-pessimizing-move -Wno-noexcept-type -Wdelete-non-virtual-dtor -Wsuggest-override -Wno-comment -Wno-misleading-indentation -Wctad-maybe-unsupported -fdiagnostics-color -ffunction-sections -fdata-sections -O2 -g -DNDEBUG -std=gnu++17 -mavx2 -mfma -msse4.2 -D__LIBC_USE_BUILTIN_CEIL_FLOOR_RINT_TRUNC -DLIBC_QSORT_IMPL=LIBC_QSORT_QUICK_SORT -DLIBC_ADD_NULL_CHECKS -fpie -ffreestanding -DLIBC_FULL_BUILD -isystem/usr/lib/gcc/x86_64-linux-gnu/13//include -nostdinc -idirafter/usr/include -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 -mno-omit-leaf-frame-pointer -Wall -Wextra -Werror -Wconversion -Wno-sign-conversion -fext-numeric-literals -Wno-pedantic -Wimplicit-fallthrough -Wwrite-strings -Wextra-semi -O3 -DLIBC_COPT_PUBLIC_PACKAGING -MD -MT libc/src/math/generic/CMakeFiles/libc.src.math.generic.sinf16.dir/sinf16.cpp.o -MF libc/src/math/generic/CMakeFiles/libc.src.math.generic.sinf16.dir/sinf16.cpp.o.d -o libc/src/math/generic/CMakeFiles/libc.src.math.generic.sinf16.dir/sinf16.cpp.o -c /home/runner/work/llvm-project/llvm-project/libc/src/math/generic/sinf16.cpp
In file included from /home/runner/work/llvm-project/llvm-project/libc/src/math/generic/sinf16.cpp:16:
/home/runner/work/llvm-project/llvm-project/libc/src/__support/FPUtil/except_value_utils.h: In instantiation of ‘constexpr __llvm_libc_20_0_0_git::cpp::optional<T> __llvm_libc_20_0_0_git::fputil::ExceptValues<T, N>::lookup_odd(StorageType, bool) const [with T = _Float16; long unsigned int N = 4; StorageType = short unsigned int]’:
/home/runner/work/llvm-project/llvm-project/libc/src/math/generic/sinf16.cpp:60:43: required from here
/home/runner/work/llvm-project/llvm-project/libc/src/__support/FPUtil/except_value_utils.h:84:20: error: conversion from ‘int’ to ‘__llvm_libc_20_0_0_git::fputil::ExceptValues<_Float16, 4>::StorageType’ {aka ‘short unsigned int’} may change value [-Werror=conversion]
84 | out_bits += sign ? values[i].rnd_downward_offset
| ~~~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
85 | : values[i].rnd_upward_offset;
| ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
/home/runner/work/llvm-project/llvm-project/libc/src/__support/FPUtil/except_value_utils.h:88:20: error: conversion from ‘int’ to ‘__llvm_libc_20_0_0_git::fputil::ExceptValues<_Float16, 4>::StorageType’ {aka ‘short unsigned int’} may change value [-Werror=conversion]
88 | out_bits += sign ? values[i].rnd_upward_offset
| ~~~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
89 | : values[i].rnd_downward_offset;
| ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
cc1plus: all warnings being treated as errors