[Arm][libsanitizer] Fix arm libsanitizer failure with bleeding edge glibc
Glibc has recently introduced changed to the mode field in ipc_perm in commit
2f959dfe849e0646e27403f2e4091536496ac0f0. For Arm this means that the mode
field no longer has the same size.
This causes an assert failure against libsanitizer's internal copy of ipc_perm.
Since this change can't be easily detected I am adding arm to the list of
targets that are excluded from this check.
Patch by: Tamar Christina
Differential Revision: https://reviews.llvm.org/D69104
git-svn-id: https://llvm.org/svn/llvm-project/compiler-rt/trunk@375220 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/sanitizer_common/sanitizer_platform_limits_posix.cpp b/lib/sanitizer_common/sanitizer_platform_limits_posix.cpp
index 84058c7..9852e6b 100644
--- a/lib/sanitizer_common/sanitizer_platform_limits_posix.cpp
+++ b/lib/sanitizer_common/sanitizer_platform_limits_posix.cpp
@@ -1128,8 +1128,11 @@
CHECK_SIZE_AND_OFFSET(ipc_perm, gid);
CHECK_SIZE_AND_OFFSET(ipc_perm, cuid);
CHECK_SIZE_AND_OFFSET(ipc_perm, cgid);
-#if !defined(__aarch64__) || !SANITIZER_LINUX || __GLIBC_PREREQ (2, 21)
+#if (!defined(__aarch64__) || !SANITIZER_LINUX || __GLIBC_PREREQ (2, 21)) && \
+ !defined(__arm__)
/* On aarch64 glibc 2.20 and earlier provided incorrect mode field. */
+/* On Arm newer glibc provide a different mode field, it's hard to detect
+ so just disable the check. */
CHECK_SIZE_AND_OFFSET(ipc_perm, mode);
#endif
