[Bug sanitizer/71445] New: libsanitizer build failure on aarch64-linux-gnu with recent glibc

["yroux at gcc dot gnu.org" <gcc-bugzilla at gcc dot gnu dot org>]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=71445

            Bug ID: 71445
           Summary: libsanitizer build failure on aarch64-linux-gnu with
                    recent glibc
           Product: gcc
           Version: unknown
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: sanitizer
          Assignee: unassigned at gcc dot gnu.org
          Reporter: yroux at gcc dot gnu.org
                CC: dodji at gcc dot gnu.org, dvyukov at gcc dot gnu.org,
                    jakub at gcc dot gnu.org, kcc at gcc dot gnu.org
  Target Milestone: ---

Recent changes in Glibc to follow POSIX specifications for both msghdr and
cmsghdr (switch from size_t to sockelen_t for msg_iovlen, msg_controllen, and
cmsg_len on 64-bits arch.), libsanitizer fails to build for AArch64 (logs at
the end), and I guess other 64-bits targets.

This issue was fixed in compiler-rt sources at revision 272008:

http://llvm.org/viewvc/llvm-project?view=revision&revision=272008

For information Glibc revision which introduced the issue is:

https://sourceware.org/git/?p=glibc.git;a=commit;h=222c2d7f4357d66073176f3beec67af40f0486c7

Full log of the failure:

.../libsanitizer/sanitizer_common/sanitizer_internal_defs.h:254:72:
error: size of array 'assertion_failed__1007' is negative
     typedef char IMPL_PASTE(assertion_failed_##_, line)[2*(int)(pred)-1]
                                                                        ^
.../libsanitizer/sanitizer_common/sanitizer_internal_defs.h:248:30:
note: in expansion of macro 'IMPL_COMPILER_ASSERT'
 #define COMPILER_CHECK(pred) IMPL_COMPILER_ASSERT(pred, __LINE__)
                              ^~~~~~~~~~~~~~~~~~~~
.../libsanitizer/sanitizer_common/sanitizer_platform_limits_posix.h:1410:3:
note: in expansion of macro 'COMPILER_CHECK'
   COMPILER_CHECK(sizeof(((__sanitizer_##CLASS *) NULL)->MEMBER) == \
   ^~~~~~~~~~~~~~
.../libsanitizer/sanitizer_common/sanitizer_platform_limits_posix.cc:1007:1:
note: in expansion of macro 'CHECK_SIZE_AND_OFFSET'
 CHECK_SIZE_AND_OFFSET(msghdr, msg_iovlen);
 ^~~~~~~~~~~~~~~~~~~~~
.../libsanitizer/sanitizer_common/sanitizer_internal_defs.h:254:72:
error: size of array 'assertion_failed__1009' is negative
     typedef char IMPL_PASTE(assertion_failed_##_, line)[2*(int)(pred)-1]
                                                                        ^
.../libsanitizer/sanitizer_common/sanitizer_internal_defs.h:248:30:
note: in expansion of macro 'IMPL_COMPILER_ASSERT'
 #define COMPILER_CHECK(pred) IMPL_COMPILER_ASSERT(pred, __LINE__)
                              ^~~~~~~~~~~~~~~~~~~~
.../libsanitizer/sanitizer_common/sanitizer_platform_limits_posix.h:1410:3:
note: in expansion of macro 'COMPILER_CHECK'
   COMPILER_CHECK(sizeof(((__sanitizer_##CLASS *) NULL)->MEMBER) == \
   ^~~~~~~~~~~~~~
.../libsanitizer/sanitizer_common/sanitizer_platform_limits_posix.cc:1009:1:
note: in expansion of macro 'CHECK_SIZE_AND_OFFSET'
 CHECK_SIZE_AND_OFFSET(msghdr, msg_controllen);
 ^~~~~~~~~~~~~~~~~~~~~
.../libsanitizer/sanitizer_common/sanitizer_internal_defs.h:254:72:
error: size of array 'assertion_failed__1013' is negative
     typedef char IMPL_PASTE(assertion_failed_##_, line)[2*(int)(pred)-1]
                                                                        ^
.../libsanitizer/sanitizer_common/sanitizer_internal_defs.h:248:30:
note: in expansion of macro 'IMPL_COMPILER_ASSERT'
 #define COMPILER_CHECK(pred) IMPL_COMPILER_ASSERT(pred, __LINE__)
                              ^~~~~~~~~~~~~~~~~~~~
.../libsanitizer/sanitizer_common/sanitizer_platform_limits_posix.h:1410:3:
note: in expansion of macro 'COMPILER_CHECK'
   COMPILER_CHECK(sizeof(((__sanitizer_##CLASS *) NULL)->MEMBER) == \
   ^~~~~~~~~~~~~~
.../libsanitizer/sanitizer_common/sanitizer_platform_limits_posix.cc:1013:1:
note: in expansion of macro 'CHECK_SIZE_AND_OFFSET'
 CHECK_SIZE_AND_OFFSET(cmsghdr, cmsg_len);
 ^~~~~~~~~~~~~~~~~~~~~