From dbdf86838aaaef76620c00c53096cfe157d5af6e Mon Sep 17 00:00:00 2001 From: Jakub Jelinek Date: Fri, 14 Feb 2020 12:38:30 +0100 Subject: [PATCH] backport: re PR sanitizer/92154 (new glibc breaks arm bootstrap due to libsanitizer) Backported from mainline 2019-11-26 Jakub Jelinek PR sanitizer/92154 * sanitizer_common/sanitizer_platform_limits_posix.h: Cherry-pick llvm-project revision 947f9692440836dcb8d88b74b69dd379d85974ce. * sanitizer_common/sanitizer_platform_limits_posix.cc: Likewise. --- --- a/libsanitizer/sanitizer_common/sanitizer_platform_limits_posix.cc +++ b/libsanitizer/sanitizer_common/sanitizer_platform_limits_posix.cc @@ -1128,16 +1128,13 @@ CHECK_SIZE_AND_OFFSET(ipc_perm, gid); CHECK_SIZE_AND_OFFSET(ipc_perm, cuid); CHECK_SIZE_AND_OFFSET(ipc_perm, cgid); #ifndef __GLIBC_PREREQ #define __GLIBC_PREREQ(x, y) 0 #endif -#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 CHECK_TYPE_SIZE(shmid_ds); CHECK_SIZE_AND_OFFSET(shmid_ds, shm_perm); --- a/libsanitizer/sanitizer_common/sanitizer_platform_limits_posix.h +++ b/libsanitizer/sanitizer_common/sanitizer_platform_limits_posix.h @@ -210,20 +210,13 @@ 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) -- 2.25.2