diff -aur src.pristine/gcc-6.5.0/libsanitizer/sanitizer_common/sanitizer_platform_limits_posix.cc src.new/gcc-6.5.0/libsanitizer/sanitizer_common/sanitizer_platform_limits_posix.cc
--- src.pristine/gcc-6.5.0/libsanitizer/sanitizer_common/sanitizer_platform_limits_posix.cc	2020-02-26 21:58:22.465728543 -0500
+++ src.new/gcc-6.5.0/libsanitizer/sanitizer_common/sanitizer_platform_limits_posix.cc	2020-02-26 22:17:14.997803617 -0500
@@ -1130,8 +1130,9 @@
 #ifndef __GLIBC_PREREQ
 #define __GLIBC_PREREQ(x, y) 0
 #endif
-#if !defined(__aarch64__) || !SANITIZER_LINUX || __GLIBC_PREREQ (2, 21)
-/* On aarch64 glibc 2.20 and earlier provided incorrect mode field.  */
+//#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 -aur src.pristine/gcc-6.5.0/libsanitizer/sanitizer_common/sanitizer_platform_limits_posix.h src.new/gcc-6.5.0/libsanitizer/sanitizer_common/sanitizer_platform_limits_posix.h
--- src.pristine/gcc-6.5.0/libsanitizer/sanitizer_common/sanitizer_platform_limits_posix.h	2020-02-26 21:58:22.459061884 -0500
+++ src.new/gcc-6.5.0/libsanitizer/sanitizer_common/sanitizer_platform_limits_posix.h	2020-02-26 22:16:16.651201784 -0500
@@ -200,27 +200,28 @@
     unsigned __seq;
     u64 __unused1;
     u64 __unused2;
-#elif defined(__mips__) || defined(__aarch64__)
-    unsigned int mode;
-    unsigned short __seq;
-    unsigned short __pad1;
-    unsigned long __unused1;
-    unsigned long __unused2;
+    //#elif defined(__mips__) || defined(__aarch64__)
+    // unsigned int mode;
+    //unsigned short __seq;
+    //unsigned short __pad1;
+    //unsigned long __unused1;
+    //unsigned long __unused2;
 #elif defined(__sparc__)
-# if defined(__arch64__)
+    //# if defined(__arch64__)
     unsigned mode;
-    unsigned short __pad1;
-# else
-    unsigned short __pad1;
-    unsigned short mode;
-    unsigned short __pad2;
-# endif
+    //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;
 #else
-    unsigned short mode;
-    unsigned short __pad1;
+    //unsigned short mode;
+    //unsigned short __pad1;
+    unsigned int mode;
     unsigned short __seq;
     unsigned short __pad2;
 #if defined(__x86_64__) && !defined(_LP64)
Only in src.new/gcc-6.5.0/libsanitizer/sanitizer_common: sanitizer_platform_limits_posix.h~