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From 75003cdd23c310ec385344e8040d490e8dd6d2be Mon Sep 17 00:00:00 2001
From: Jakub Jelinek <jakub@redhat.com>
Date: Fri, 20 Dec 2019 17:58:35 +0100
Subject: [PATCH] backport: re PR sanitizer/92154 (new glibc breaks arm
bootstrap due to libsanitizer)
Backported from mainline
2019-11-26 Jakub Jelinek <jakub@redhat.com>
Backported for version 7.1.0 <= gcc <= 7.4.0
2020-06-05 John L. Jolly <john.jolly@gmail.com>
PR sanitizer/92154
* sanitizer_common/sanitizer_platform_limits_posix.h: Cherry-pick
llvm-project revision 947f9692440836dcb8d88b74b69dd379d85974ce.
* sanitizer_common/sanitizer_platform_limits_posix.cc: Likewise.
From-SVN: r279653
---
libsanitizer/ChangeLog | 10 ++++++++++
.../sanitizer_platform_limits_posix.cc | 9 +++------
.../sanitizer_platform_limits_posix.h | 15 +--------------
3 files changed, 14 insertions(+), 20 deletions(-)
diff --git a/libsanitizer/sanitizer_common/sanitizer_platform_limits_posix.cc b/libsanitizer/sanitizer_common/sanitizer_platform_limits_posix.cc
index 06a605ff4670..d823a12190c0 100644
--- a/libsanitizer/sanitizer_common/sanitizer_platform_limits_posix.cc
+++ b/libsanitizer/sanitizer_common/sanitizer_platform_limits_posix.cc
@@ -1156,12 +1156,9 @@ CHECK_SIZE_AND_OFFSET(ipc_perm, uid);
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)) && \
- !defined(__arm__)
-/* On aarch64 glibc 2.20 and earlier provided incorrect mode field. */
-/* On Arm glibc 2.31 and later provide a different mode field, this field is
- never used by libsanitizer so we can simply ignore this assert for all glibc
- versions. */
+#if !SANITIZER_LINUX || __GLIBC_PREREQ (2, 31)
+/* glibc 2.30 and earlier provided 16-bit mode field instead of 32-bit
+ on many architectures. */
CHECK_SIZE_AND_OFFSET(ipc_perm, mode);
#endif
diff --git a/libsanitizer/sanitizer_common/sanitizer_platform_limits_posix.h b/libsanitizer/sanitizer_common/sanitizer_platform_limits_posix.h
index 73af92af1e8f..6a673a7c9959 100644
--- a/libsanitizer/sanitizer_common/sanitizer_platform_limits_posix.h
+++ b/libsanitizer/sanitizer_common/sanitizer_platform_limits_posix.h
@@ -211,20 +211,13 @@ namespace __sanitizer {
unsigned long __unused1;
unsigned long __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;
#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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