The stage2 build fails on clang-sparc64-linux-multistage with: FAILED: projects/compiler-rt/lib/sanitizer_common/CMakeFiles/RTSanitizerCommonSymbolizerNoHooks.sparc.dir/sanitizer_stackdepot.cpp.o /var/lib/buildbot/workers/debian-stadler-sparc64/clang-sparc64-linux-multistage/stage1.install/bin/clang++ -DHAVE_RPC_XDR_H=1 -D_DEBUG -D_GNU_SOURCE -D__STDC_CONSTANT_MACROS -D__STDC_FORMAT_MACROS -D__STDC_LIMIT_MACROS -Iprojects/compiler-rt/lib/sanitizer_common -I/var/lib/buildbot/workers/debian-stadler-sparc64/clang-sparc64-linux-multistage/llvm/compiler-rt/lib/sanitizer_common -Iinclude -I/var/lib/buildbot/workers/debian-stadler-sparc64/clang-sparc64-linux-multistage/llvm/llvm/include -I/var/lib/buildbot/workers/debian-stadler-sparc64/clang-sparc64-linux-multistage/llvm/compiler-rt/lib/sanitizer_common/.. -fPIC -fvisibility-inlines-hidden -Werror=date-time -Werror=unguarded-availability-new -Wall -Wextra -Wno-unused-parameter -Wwrite-strings -Wcast-qual -Wmissing-field-initializers -pedantic -Wno-long-long -Wimplicit-fallthrough -Wcovered-switch-default -Wno-noexcept-type -Wnon-virtual-dtor -Wdelete-non-virtual-dtor -Wsuggest-override -Wstring-conversion -fdiagnostics-color -ffunction-sections -fdata-sections -Wall -std=c++14 -Wno-unused-parameter -O3 -m32 -fPIC -fno-builtin -fno-exceptions -fomit-frame-pointer -funwind-tables -fno-stack-protector -fno-sanitize=safe-stack -fvisibility=hidden -fno-lto -O3 -gline-tables-only -Wno-gnu -Wno-variadic-macros -Wno-c99-extensions -nostdinc++ -fno-rtti -Wframe-larger-than=570 -Wglobal-constructors -DSANITIZER_SUPPORTS_WEAK_HOOKS=0 -UNDEBUG -std=c++14 -MD -MT projects/compiler-rt/lib/sanitizer_common/CMakeFiles/RTSanitizerCommonSymbolizerNoHooks.sparc.dir/sanitizer_stackdepot.cpp.o -MF projects/compiler-rt/lib/sanitizer_common/CMakeFiles/RTSanitizerCommonSymbolizerNoHooks.sparc.dir/sanitizer_stackdepot.cpp.o.d -o projects/compiler-rt/lib/sanitizer_common/CMakeFiles/RTSanitizerCommonSymbolizerNoHooks.sparc.dir/sanitizer_stackdepot.cpp.o -c /var/lib/buildbot/workers/debian-stadler-sparc64/clang-sparc64-linux-multistage/llvm/compiler-rt/lib/sanitizer_common/sanitizer_stackdepot.cpp In file included from /var/lib/buildbot/workers/debian-stadler-sparc64/clang-sparc64-linux-multistage/llvm/compiler-rt/lib/sanitizer_common/sanitizer_stackdepot.cpp:17: In file included from /var/lib/buildbot/workers/debian-stadler-sparc64/clang-sparc64-linux-multistage/llvm/compiler-rt/lib/sanitizer_common/sanitizer_stackdepotbase.h:16: In file included from /usr/include/stdio.h:870: /usr/include/bits/stdio-ldbl.h:26:20: error: cannot apply asm label to function after its first use __LDBL_REDIR_DECL (vfprintf) ~~~~~~~~~~~~~~~~~~~^~~~~~~~~ /usr/include/sys/cdefs.h:467:26: note: expanded from macro '__LDBL_REDIR_DECL' extern __typeof (name) name __asm (__ASMNAME ("__nldbl_" #name)); ^ ~~~~~~~~~~~~~~~~~~~~~~~~~~~~ 1 error generated. See: http://lab.llvm.org:8014/#/builders/113/builds/37 The issue has existed for a while but I never actually reported it.
Created attachment 24615 [details] Preprocessed source for sanitizer_platform_limits_posix.cpp
Ah yes, the preprocessed output has: 5288 extern int vfprintf (FILE *__restrict __s, const char *__restrict __format, 5289 __gnuc_va_list __arg); ... (this is just the declaration, no 'use' yet 5626 # 1 "/usr/include/bits/stdio.h" 1 3 4 5627 # 38 "/usr/include/bits/stdio.h" 3 4 5628 extern __inline __attribute__ ((__gnu_inline__)) int 5629 vprintf (const char *__restrict __fmt, __gnuc_va_list __arg) 5630 { 5631 return vfprintf (stdout, __fmt, __arg); 5632 } ... so there is the first 'use' 5735 # 1 "/usr/include/bits/stdio-ldbl.h" 1 3 4 5736 # 23 "/usr/include/bits/stdio-ldbl.h" 3 4 5737 extern __typeof (fprintf) fprintf __asm ("" "__nldbl_" "fprintf"); 5738 extern __typeof (printf) printf __asm ("" "__nldbl_" "printf"); 5739 extern __typeof (sprintf) sprintf __asm ("" "__nldbl_" "sprintf"); 5740 extern __typeof (vfprintf) vfprintf __asm ("" "__nldbl_" "vfprintf"); ... and here is the part it is complaining about. The initial declaration is in stdio.h itself, the inline definition of vprintf (which 'uses' vfprintf) in bits/stdio.h, and the asm stuff is in bits/stdio-ldbl.h. But note, the __asm label thing is done via a __LDBL_REDIR_DECL macro from sys/cdefs.h, and this is only applied in case of: #if defined __LONG_DOUBLE_MATH_OPTIONAL && defined __NO_LONG_DOUBLE_MATH I think this is the reason you only see it on sparc64, as that doesn't have long double math, at least according to the glibc sources: sysdeps/unix/sysv/linux/sparc/sparc32/bits/long-double.h 21:#if !defined __NO_LONG_DOUBLE_MATH && __WORDSIZE == 32 24:# define __NO_LONG_DOUBLE_MATH 1 sysdeps/unix/sysv/linux/sparc/sparc64/bits/long-double.h 21:#if !defined __NO_LONG_DOUBLE_MATH && __WORDSIZE == 32 24:# define __NO_LONG_DOUBLE_MATH 1
Hmm, that sounds more like a bug in glibc then. Although I don't understand the connection between long double math and the __asm label.
(In reply to John Paul Adrian Glaubitz from comment #3) > Hmm, that sounds more like a bug in glibc then. Although I don't understand > the connection between long double math and the __asm label. Ah, sys/cdefs.h has this part dealing with it: #if defined __LONG_DOUBLE_MATH_OPTIONAL && defined __NO_LONG_DOUBLE_MATH # define __LDBL_COMPAT 1 # ifdef __REDIRECT # define __LDBL_REDIR1(name, proto, alias) __REDIRECT (name, proto, alias) # define __LDBL_REDIR(name, proto) \ __LDBL_REDIR1 (name, proto, __nldbl_##name) # define __LDBL_REDIR1_NTH(name, proto, alias) __REDIRECT_NTH (name, proto, alias) # define __LDBL_REDIR_NTH(name, proto) \ __LDBL_REDIR1_NTH (name, proto, __nldbl_##name) # define __LDBL_REDIR1_DECL(name, alias) \ extern __typeof (name) name __asm (__ASMNAME (#alias)); # define __LDBL_REDIR_DECL(name) \ extern __typeof (name) name __asm (__ASMNAME ("__nldbl_" #name)); # define __REDIRECT_LDBL(name, proto, alias) \ __LDBL_REDIR1 (name, proto, __nldbl_##alias) # define __REDIRECT_NTH_LDBL(name, proto, alias) \ __LDBL_REDIR1_NTH (name, proto, __nldbl_##alias) # endif #endif #if !defined __LDBL_COMPAT || !defined __REDIRECT # define __LDBL_REDIR1(name, proto, alias) name proto # define __LDBL_REDIR(name, proto) name proto # define __LDBL_REDIR1_NTH(name, proto, alias) name proto __THROW # define __LDBL_REDIR_NTH(name, proto) name proto __THROW # define __LDBL_REDIR_DECL(name) # ifdef __REDIRECT # define __REDIRECT_LDBL(name, proto, alias) __REDIRECT (name, proto, alias) # define __REDIRECT_NTH_LDBL(name, proto, alias) \ __REDIRECT_NTH (name, proto, alias) # endif #endif I.e, if long double math is optional (I guess this might be glibc compile time option, but I'm unsure), *and* the platform/arch does not support long double, it defines a bunch of redirection macros. These macros appear to want to alias "foo" to "__nldbl_foo", so any calls to long double functions would end up at stubs that know how to handle them. (I'm unsure whether that will just abort at runtime, or pretend that double is the same as long double.) Otherwise (if the arch does support long double) these redirection macros are no-ops, and effectively empty. bits/stdio-ldbl.h then has a __LDBL_REDIR_DECL (vfprintf) line, which uses the above macro, together with a bunch of other stdio functions. It seems to me a solution could be to move the #include <bits/stdio-ldbl.h> up a bit, so instead of: /* If we are compiling with optimizing read this file. It contains several optimizing inline functions and macros. */ #ifdef __USE_EXTERN_INLINES # include <bits/stdio.h> #endif #if __USE_FORTIFY_LEVEL > 0 && defined __fortify_function # include <bits/stdio2.h> #endif #ifdef __LDBL_COMPAT # include <bits/stdio-ldbl.h> #endif you would get: /* If we are compiling with optimizing read this file. It contains several optimizing inline functions and macros. */ #ifdef __LDBL_COMPAT # include <bits/stdio-ldbl.h> #endif #ifdef __USE_EXTERN_INLINES # include <bits/stdio.h> #endif #if __USE_FORTIFY_LEVEL > 0 && defined __fortify_function # include <bits/stdio2.h> #endif
Reported as a bug in glibc: https://sourceware.org/bugzilla/show_bug.cgi?id=27558
(In reply to Dimitry Andric from comment #4) > It seems to me a solution could be to move the #include <bits/stdio-ldbl.h> > up a bit, so instead of: > > /* If we are compiling with optimizing read this file. It contains > several optimizing inline functions and macros. */ > #ifdef __USE_EXTERN_INLINES > # include <bits/stdio.h> > #endif > #if __USE_FORTIFY_LEVEL > 0 && defined __fortify_function > # include <bits/stdio2.h> > #endif > #ifdef __LDBL_COMPAT > # include <bits/stdio-ldbl.h> > #endif > > you would get: > > /* If we are compiling with optimizing read this file. It contains > several optimizing inline functions and macros. */ > #ifdef __LDBL_COMPAT > # include <bits/stdio-ldbl.h> > #endif > #ifdef __USE_EXTERN_INLINES > # include <bits/stdio.h> > #endif > #if __USE_FORTIFY_LEVEL > 0 && defined __fortify_function > # include <bits/stdio2.h> > #endif This fixes the issue for me although I'm now running into another (unrelated) problem which seems to be a result of a missing libatomic in LDFLAGS: [9/4273] Linking CXX shared library lib/clang/13.0.0/lib/linux/libclang_rt.ubsan_minimal-sparc.so FAILED: lib/clang/13.0.0/lib/linux/libclang_rt.ubsan_minimal-sparc.so : && /home/glaubitz/llvm-project/build/./bin/clang++ -fPIC -fPIC -fvisibility-inlines-hidden -Werror=date-time -Werror=unguarded-availability-new -Wall -Wextra -Wno-unused-parameter -Wwrite-strings -Wcast-qual -Wmissing-field-initializers -pedantic -Wno-long-long -Wimplicit-fallthrough -Wcovered-switch-default -Wno-noexcept-type -Wnon-virtual-dtor -Wdelete-non-virtual-dtor -Wsuggest-override -Wstring-conversion -Werror=return-type -fdiagnostics-color -Wall -std=c++14 -Wno-unused-parameter -g -Wl,-z,defs -Wl,-z,nodelete -m32 -nodefaultlibs -Wl,-z,text -nostdlib++ -Wl,-rpath-link,/home/glaubitz/llvm-project/build/tools/clang/stage2-bins/./lib -shared -Wl,-soname,libclang_rt.ubsan_minimal-sparc.so -o lib/clang/13.0.0/lib/linux/libclang_rt.ubsan_minimal-sparc.so projects/compiler-rt/lib/ubsan_minimal/CMakeFiles/RTUbsan_minimal.sparc.dir/ubsan_minimal_handlers.cpp.o -Wl,-rpath,"\$ORIGIN/../lib" -lgcc_s -lc && : /usr/bin/ld: projects/compiler-rt/lib/ubsan_minimal/CMakeFiles/RTUbsan_minimal.sparc.dir/ubsan_minimal_handlers.cpp.o: in function `report_this_error(void*)': /home/glaubitz/llvm-project/compiler-rt/lib/ubsan_minimal/../sanitizer_common/sanitizer_atomic_clang.h:80: undefined reference to `__atomic_compare_exchange_4' clang-13: error: linker command failed with exit code 1 (use -v to see invocation)
(In reply to John Paul Adrian Glaubitz from comment #6) > This fixes the issue for me although I'm now running into another > (unrelated) problem which seems to be a result of a missing libatomic in > LDFLAGS: > > [9/4273] Linking CXX shared library > lib/clang/13.0.0/lib/linux/libclang_rt.ubsan_minimal-sparc.so > FAILED: lib/clang/13.0.0/lib/linux/libclang_rt.ubsan_minimal-sparc.so [...] > /usr/bin/ld: > projects/compiler-rt/lib/ubsan_minimal/CMakeFiles/RTUbsan_minimal.sparc.dir/ > ubsan_minimal_handlers.cpp.o: in function `report_this_error(void*)': > /home/glaubitz/llvm-project/compiler-rt/lib/ubsan_minimal/../ > sanitizer_common/sanitizer_atomic_clang.h:80: undefined reference to > `__atomic_compare_exchange_4' > clang-13: error: linker command failed with exit code 1 (use -v to see > invocation) This is a known issue: cf. Bug 42535. On Solaris/SPARC, only SPARC V9 CPUs are supported and I avoid the issue by relying on that: https://reviews.llvm.org/D86621. No idea about the Linux/sparc situation, though.
(In reply to Rainer Orth from comment #7) > This is a known issue: cf. Bug 42535. On Solaris/SPARC, only SPARC V9 CPUs > are > supported and I avoid the issue by relying on that: > https://reviews.llvm.org/D86621. No idea about the Linux/sparc situation, > though. This fixes the problem for me: diff --git a/compiler-rt/cmake/base-config-ix.cmake b/compiler-rt/cmake/base-config-ix.cmake index 1edab43e7c0d..94ed0b5e1d19 100644 --- a/compiler-rt/cmake/base-config-ix.cmake +++ b/compiler-rt/cmake/base-config-ix.cmake @@ -189,7 +189,7 @@ macro(test_targets) elseif("${COMPILER_RT_DEFAULT_TARGET_ARCH}" MATCHES "s390x") test_target_arch(s390x "" "") elseif("${COMPILER_RT_DEFAULT_TARGET_ARCH}" MATCHES "sparc") - test_target_arch(sparc "" "-m32") + test_target_arch(sparc "" "-mcpu=v9" "-m32") test_target_arch(sparcv9 "" "-m64") elseif("${COMPILER_RT_DEFAULT_TARGET_ARCH}" MATCHES "mipsel|mips64el") # Gcc doesn't accept -m32/-m64 so we do the next best thing and use @jrtc27: Would you be fine with this change?
Hmm, there are more issues with the sanitizer on Linux/sparc64. I also had to properly define pc and sp on Linux: diff --git a/compiler-rt/cmake/base-config-ix.cmake b/compiler-rt/cmake/base-config-ix.cmake index 1edab43e7c0d..94ed0b5e1d19 100644 --- a/compiler-rt/cmake/base-config-ix.cmake +++ b/compiler-rt/cmake/base-config-ix.cmake @@ -189,7 +189,7 @@ macro(test_targets) elseif("${COMPILER_RT_DEFAULT_TARGET_ARCH}" MATCHES "s390x") test_target_arch(s390x "" "") elseif("${COMPILER_RT_DEFAULT_TARGET_ARCH}" MATCHES "sparc") - test_target_arch(sparc "" "-m32") + test_target_arch(sparc "" "-mcpu=v9" "-m32") test_target_arch(sparcv9 "" "-m64") elseif("${COMPILER_RT_DEFAULT_TARGET_ARCH}" MATCHES "mipsel|mips64el") # Gcc doesn't accept -m32/-m64 so we do the next best thing and use diff --git a/compiler-rt/lib/sanitizer_common/sanitizer_linux.cpp b/compiler-rt/lib/sanitizer_common/sanitizer_linux.cpp index 25c0751c9a38..c9bf318bfccb 100644 --- a/compiler-rt/lib/sanitizer_common/sanitizer_linux.cpp +++ b/compiler-rt/lib/sanitizer_common/sanitizer_linux.cpp @@ -1883,6 +1883,12 @@ SignalContext::WriteFlag SignalContext::GetWriteFlag() const { // From OpenSolaris $SRC/uts/sun4/os/trap.c (get_accesstype). #if SANITIZER_SOLARIS uptr pc = ucontext->uc_mcontext.gregs[REG_PC]; +#elif SANITIZER_LINUX +#if defined (__arch64__) + uptr pc = ucontext->uc_mcontext.mc_gregs[MC_PC]; +#else + uptr pc = ucontext->uc_mcontext.gregs[REG_PC]; +#endif #else // Historical BSDism here. struct sigcontext *scontext = (struct sigcontext *)context; @@ -2086,6 +2092,15 @@ static void GetPcSpBp(void *context, uptr *pc, uptr *sp, uptr *bp) { ucontext_t *ucontext = (ucontext_t *)context; *pc = ucontext->uc_mcontext.gregs[REG_PC]; *sp = ucontext->uc_mcontext.gregs[REG_O6] + STACK_BIAS; +# elif SANITIZER_LINUX + ucontext_t *ucontext = (ucontext_t*)context; +# if defined (__arch64__) + *pc = ucontext->uc_mcontext.mc_gregs[MC_PC]; + *sp = ucontext->uc_mcontext.mc_gregs[MC_O6] + STACK_BIAS; +# else + *pc = ucontext->uc_mcontext.gregs[REG_PC]; + *sp = ucontext->uc_mcontext.gregs[REG_O6] + STACK_BIAS; +# endif #else // Historical BSDism here. struct sigcontext *scontext = (struct sigcontext *)context; diff --git a/compiler-rt/lib/sanitizer_common/sanitizer_platform_limits_posix.cpp b/compiler-rt/lib/sanitizer_common/sanitizer_platform_limits_posix.cpp index 35a690cba5c8..0cafa3be234d 100644 --- a/compiler-rt/lib/sanitizer_common/sanitizer_platform_limits_posix.cpp +++ b/compiler-rt/lib/sanitizer_common/sanitizer_platform_limits_posix.cpp @@ -240,7 +240,7 @@ namespace __sanitizer { // Use pre-computed size of struct ustat to avoid <sys/ustat.h> which // has been removed from glibc 2.28. #if defined(__aarch64__) || defined(__s390x__) || defined(__mips64) || \ - defined(__powerpc64__) || defined(__arch64__) || defined(__sparcv9) || \ + defined(__powerpc64__) || (defined(__arch64__) && defined(__sparc__)) || \ defined(__x86_64__) || SANITIZER_RISCV64 #define SIZEOF_STRUCT_USTAT 32 #elif defined(__arm__) || defined(__i386__) || defined(__mips__) \ And there are more issues: FAILED: projects/compiler-rt/lib/sanitizer_common/CMakeFiles/RTSanitizerCommonNoHooks.sparc.dir/sanitizer_linux.cpp.o /home/glaubitz/llvm-project/stage1.install/bin/clang++ -DHAVE_RPC_XDR_H=1 -D_DEBUG -D_GNU_SOURCE -D__STDC_CONSTANT_MACROS -D__STDC_FORMAT_MACROS -D__STDC_LIMIT_MACROS -Iprojects/compiler-rt/lib/sanitizer_common -I/home/glaubitz/llvm-project/compiler-rt/lib/sanitizer_common -Iinclude -I/home/glaubitz/llvm-project/llvm/include -I/home/glaubitz/llvm-project/compiler-rt/lib/sanitizer_common/.. -fPIC -fvisibility-inlines-hidden -Werror=date-time -Werror=unguarded-availability-new -Wall -Wextra -Wno-unused-parameter -Wwrite-strings -Wcast-qual -Wmissing-field-initializers -pedantic -Wno-long-long -Wimplicit-fallthrough -Wcovered-switch-default -Wno-noexcept-type -Wnon-virtual-dtor -Wdelete-non-virtual-dtor -Wsuggest-override -Wstring-conversion -Werror=return-type -fdiagnostics-color -ffunction-sections -fdata-sections -Wall -std=c++14 -Wno-unused-parameter -O3 -mcpu=v9 -m32 -fPIC -fno-builtin -fno-exceptions -fomit-frame-pointer -funwind-tables -fno-stack-protector -fno-sanitize=safe-stack -fvisibility=hidden -fno-lto -O3 -gline-tables-only -Wno-gnu -Wno-variadic-macros -Wno-c99-extensions -nostdinc++ -fno-rtti -Wframe-larger-than=570 -Wglobal-constructors -DSANITIZER_SUPPORTS_WEAK_HOOKS=0 -UNDEBUG -std=c++14 -MD -MT projects/compiler-rt/lib/sanitizer_common/CMakeFiles/RTSanitizerCommonNoHooks.sparc.dir/sanitizer_linux.cpp.o -MF projects/compiler-rt/lib/sanitizer_common/CMakeFiles/RTSanitizerCommonNoHooks.sparc.dir/sanitizer_linux.cpp.o.d -o projects/compiler-rt/lib/sanitizer_common/CMakeFiles/RTSanitizerCommonNoHooks.sparc.dir/sanitizer_linux.cpp.o -c /home/glaubitz/llvm-project/compiler-rt/lib/sanitizer_common/sanitizer_linux.cpp /home/glaubitz/llvm-project/compiler-rt/lib/sanitizer_common/sanitizer_linux.cpp:1890:35: error: no member named 'gregs' in 'mcontext_t' uptr pc = ucontext->uc_mcontext.gregs[REG_PC]; ~~~~~~~~~~~~~~~~~~~~~ ^ /home/glaubitz/llvm-project/compiler-rt/lib/sanitizer_common/sanitizer_linux.cpp:2101:31: error: no member named 'gregs' in 'mcontext_t' *pc = ucontext->uc_mcontext.gregs[REG_PC]; ~~~~~~~~~~~~~~~~~~~~~ ^ /home/glaubitz/llvm-project/compiler-rt/lib/sanitizer_common/sanitizer_linux.cpp:2102:31: error: no member named 'gregs' in 'mcontext_t' *sp = ucontext->uc_mcontext.gregs[REG_O6] + STACK_BIAS; ~~~~~~~~~~~~~~~~~~~~~ ^ 3 errors generated. (...) /home/glaubitz/llvm-project/compiler-rt/lib/sanitizer_common/sanitizer_platform_limits_posix.h:1438:3: note: expanded from macro 'CHECK_SIZE_AND_OFFSET' COMPILER_CHECK(sizeof(((__sanitizer_##CLASS *)NULL)->MEMBER) == \ ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ /home/glaubitz/llvm-project/compiler-rt/lib/sanitizer_common/sanitizer_internal_defs.h:332:30: note: expanded from macro 'COMPILER_CHECK' #define COMPILER_CHECK(pred) static_assert(pred, "") ^ ~~~~ /home/glaubitz/llvm-project/compiler-rt/lib/sanitizer_common/sanitizer_platform_limits_posix.cpp:1061:1: error: static_assert failed due to requirement 'sizeof (((__sanitizer::__sanitizer_dirent64 *)__null)->d_off) == sizeof (((dirent64 *)__null)->d_off)' "" CHECK_SIZE_AND_OFFSET(dirent64, d_off); ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ /home/glaubitz/llvm-project/compiler-rt/lib/sanitizer_common/sanitizer_platform_limits_posix.h:1438:3: note: expanded from macro 'CHECK_SIZE_AND_OFFSET' COMPILER_CHECK(sizeof(((__sanitizer_##CLASS *)NULL)->MEMBER) == \ ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ /home/glaubitz/llvm-project/compiler-rt/lib/sanitizer_common/sanitizer_internal_defs.h:332:30: note: expanded from macro 'COMPILER_CHECK' #define COMPILER_CHECK(pred) static_assert(pred, "") ^ ~~~~ /home/glaubitz/llvm-project/compiler-rt/lib/sanitizer_common/sanitizer_platform_limits_posix.cpp:1061:1: error: static_assert failed due to requirement '__builtin_offsetof(__sanitizer::__sanitizer_dirent64, d_off) == __builtin_offsetof(dirent64, d_off)' "" CHECK_SIZE_AND_OFFSET(dirent64, d_off); ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ /home/glaubitz/llvm-project/compiler-rt/lib/sanitizer_common/sanitizer_platform_limits_posix.h:1440:3: note: expanded from macro 'CHECK_SIZE_AND_OFFSET' COMPILER_CHECK(offsetof(__sanitizer_##CLASS, MEMBER) == \ It seems like clang automatically defaults mcpu=v9 to 64 bits.
OK, it seems that clang handles the combination of "-m32" and "-mcpu=v9" incorrectly: glaubitz@gcc202:~/llvm-project/build$ clang++ -DHAVE_RPC_XDR_H=1 -D_DEBUG -D_GNU_SOURCE -D__STDC_CONSTANT_MACROS -D__STDC_FORMAT_MACROS -D__STDC_LIMIT_MACROS -Iprojects/compiler-rt/lib/sanitizer_common -I/home/glaubitz/llvm-project/compiler-rt/lib/sanitizer_common -Iinclude -I/home/glaubitz/llvm-project/llvm/include -I/home/glaubitz/llvm-project/compiler-rt/lib/sanitizer_common/.. -fPIC -fvisibility-inlines-hidden -Werror=date-time -Werror=unguarded-availability-new -Wall -Wextra -Wno-unused-parameter -Wwrite-strings -Wcast-qual -Wmissing-field-initializers -pedantic -Wno-long-long -Wimplicit-fallthrough -Wcovered-switch-default -Wno-noexcept-type -Wnon-virtual-dtor -Wdelete-non-virtual-dtor -Wsuggest-override -Wstring-conversion -Werror=return-type -fdiagnostics-color -ffunction-sections -fdata-sections -Wall -std=c++14 -Wno-unused-parameter -O3 -fPIC -fno-builtin -fno-exceptions -fomit-frame-pointer -funwind-tables -fno-stack-protector -fno-sanitize=safe-stack -fvisibility=hidden -fno-lto -O3 -gline-tables-only -Wno-gnu -Wno-variadic-macros -Wno-c99-extensions -nostdinc++ -fno-rtti -Wframe-larger-than=570 -Wglobal-constructors -UNDEBUG -std=c++14 -MD -MT projects/compiler-rt/lib/sanitizer_common/CMakeFiles/RTSanitizerCommon.sparc.dir/sanitizer_linux.cpp.o -MF projects/compiler-rt/lib/sanitizer_common/CMakeFiles/RTSanitizerCommon.sparc.dir/sanitizer_linux.cpp.o.d -o projects/compiler-rt/lib/sanitizer_common/CMakeFiles/RTSanitizerCommon.sparc.dir/sanitizer_linux.cpp.o -c /home/glaubitz/llvm-project/compiler-rt/lib/sanitizer_common/sanitizer_linux.cpp -mcpu=v9 -m32 /home/glaubitz/llvm-project/compiler-rt/lib/sanitizer_common/sanitizer_linux.cpp:1890:35: error: no member named 'gregs' in 'mcontext_t' uptr pc = ucontext->uc_mcontext.gregs[REG_PC]; ~~~~~~~~~~~~~~~~~~~~~ ^ /home/glaubitz/llvm-project/compiler-rt/lib/sanitizer_common/sanitizer_linux.cpp:2101:31: error: no member named 'gregs' in 'mcontext_t' *pc = ucontext->uc_mcontext.gregs[REG_PC]; ~~~~~~~~~~~~~~~~~~~~~ ^ /home/glaubitz/llvm-project/compiler-rt/lib/sanitizer_common/sanitizer_linux.cpp:2102:31: error: no member named 'gregs' in 'mcontext_t' *sp = ucontext->uc_mcontext.gregs[REG_O6] + STACK_BIAS; ~~~~~~~~~~~~~~~~~~~~~ ^ 3 errors generated. glaubitz@gcc202:~/llvm-project/build$ g++ -DHAVE_RPC_XDR_H=1 -D_DEBUG -D_GNU_SOURCE -D__STDC_CONSTANT_MACROS -D__STDC_FORMAT_MACROS -D__STDC_LIMIT_MACROS -Iprojects/compiler-rt/lib/sanitizer_common -I/home/glaubitz/llvm-project/compiler-rt/lib/sanitizer_common -Iinclude -I/home/glaubitz/llvm-project/llvm/include -I/home/glaubitz/llvm-project/compiler-rt/lib/sanitizer_common/.. -fPIC -fvisibility-inlines-hidden -Werror=date-time -Wall -Wextra -Wno-unused-parameter -Wwrite-strings -Wcast-qual -Wmissing-field-initializers -pedantic -Wno-long-long -Wimplicit-fallthrough -Wno-noexcept-type -Wnon-virtual-dtor -Wdelete-non-virtual-dtor -Wsuggest-override -Werror=return-type -fdiagnostics-color -ffunction-sections -fdata-sections -Wall -std=c++14 -Wno-unused-parameter -O3 -fPIC -fno-builtin -fno-exceptions -fomit-frame-pointer -funwind-tables -fno-stack-protector -fvisibility=hidden -fno-lto -O3 -Wno-gnu -Wno-variadic-macros -Wno-c99-extensions -nostdinc++ -fno-rtti -Wframe-larger-than=570 -UNDEBUG -std=c++14 -MD -MT projects/compiler-rt/lib/sanitizer_common/CMakeFiles/RTSanitizerCommon.sparc.dir/sanitizer_linux.cpp.o -MF projects/compiler-rt/lib/sanitizer_common/CMakeFiles/RTSanitizerCommon.sparc.dir/sanitizer_linux.cpp.o.d -o projects/compiler-rt/lib/sanitizer_common/CMakeFiles/RTSanitizerCommon.sparc.dir/sanitizer_linux.cpp.o -c /home/glaubitz/llvm-project/compiler-rt/lib/sanitizer_common/sanitizer_linux.cpp -mcpu=v9 -m32glaubitz@gcc202:~/llvm-project/build$
This fixes it provided that #49562 is fixed: diff --git a/compiler-rt/cmake/base-config-ix.cmake b/compiler-rt/cmake/base-config-ix.cmake index 1edab43e7c0d..0ff9930e2616 100644 --- a/compiler-rt/cmake/base-config-ix.cmake +++ b/compiler-rt/cmake/base-config-ix.cmake @@ -189,8 +189,12 @@ macro(test_targets) elseif("${COMPILER_RT_DEFAULT_TARGET_ARCH}" MATCHES "s390x") test_target_arch(s390x "" "") elseif("${COMPILER_RT_DEFAULT_TARGET_ARCH}" MATCHES "sparc") - test_target_arch(sparc "" "-m32") - test_target_arch(sparcv9 "" "-m64") + if (CMAKE_SIZEOF_VOID_P EQUAL 4) + test_target_arch(sparc "" "-mcpu=v9" "-m32") + append("-latomic" CMAKE_LD_FLAGS) + else() + test_target_arch(sparcv9 "" "-m64") + endif() elseif("${COMPILER_RT_DEFAULT_TARGET_ARCH}" MATCHES "mipsel|mips64el") # Gcc doesn't accept -m32/-m64 so we do the next best thing and use # -mips32r2/-mips64r2. We don't use -mips1/-mips3 because we want to match