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diff -rNU3 gcc-9.2.0.old/libsanitizer/sanitizer_common/sanitizer_platform_limits_posix.cc gcc-9.2.0/libsanitizer/sanitizer_common/sanitizer_platform_limits_posix.cc
--- gcc-9.2.0.old/libsanitizer/sanitizer_common/sanitizer_platform_limits_posix.cc 2018-10-31 12:14:23.000000000 +0100
+++ gcc-9.2.0/libsanitizer/sanitizer_common/sanitizer_platform_limits_posix.cc 2020-02-03 15:14:36.095084796 +0100
@@ -1156,8 +1156,7 @@
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)
-/* On aarch64 glibc 2.20 and earlier provided incorrect mode field. */
+#if !SANITIZER_LINUX || __GLIBC_PREREQ (2, 31)
CHECK_SIZE_AND_OFFSET(ipc_perm, mode);
#endif
diff -rNU3 gcc-9.2.0.old/libsanitizer/sanitizer_common/sanitizer_platform_limits_posix.h gcc-9.2.0/libsanitizer/sanitizer_common/sanitizer_platform_limits_posix.h
--- gcc-9.2.0.old/libsanitizer/sanitizer_common/sanitizer_platform_limits_posix.h 2019-04-08 15:08:30.000000000 +0200
+++ gcc-9.2.0/libsanitizer/sanitizer_common/sanitizer_platform_limits_posix.h 2020-02-03 15:12:44.373316536 +0100
@@ -211,26 +211,13 @@
u64 __unused1;
u64 __unused2;
#elif defined(__sparc__)
-#if defined(__arch64__)
unsigned mode;
- unsigned short __pad1;
-#else
- unsigned short __pad1;
- unsigned short mode;
unsigned short __pad2;
-#endif
unsigned short __seq;
unsigned long long __unused1;
unsigned long long __unused2;
-#elif defined(__mips__) || defined(__aarch64__) || defined(__s390x__)
- unsigned int mode;
- unsigned short __seq;
- unsigned short __pad1;
- unsigned long __unused1;
- unsigned long __unused2;
#else
- unsigned short mode;
- unsigned short __pad1;
+ unsigned int mode;
unsigned short __seq;
unsigned short __pad2;
#if defined(__x86_64__) && !defined(_LP64)
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