From mboxrd@z Thu Jan 1 00:00:00 1970 From: Max Filippov Date: Thu, 24 Mar 2016 20:03:22 +0300 Subject: [Buildroot] [PATCH] gcc: fix libsanitizer build with _FILE_OFFSET_BITS=64 Message-ID: <1458839002-32141-1-git-send-email-jcmvbkbc@gmail.com> List-Id: MIME-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit To: buildroot@busybox.net After the commit f67a4f50e2ace3a2 "gcc: preserve CXXFLAGS_FOR_TARGET" target CFLAGS are passed to all libraries bundled with gcc. This breaks libsanitizer on gcc-4.9.x when building with _FILE_OFFSET_BITS=64: error: size of array ?assertion_failed__837? is negative ... libsanitizer/sanitizer_common/sanitizer_platform_limits_posix.cc:837:1: note: in expansion of macro ?CHECK_SIZE_AND_OFFSET? CHECK_SIZE_AND_OFFSET(dirent, d_ino); This issue is fixed in the libsanitizer mainline and in gcc-5.x. There's no issue with gcc-4.8.x and earlier. Reported-by: Julien CORJON Signed-off-by: Max Filippov Backported from: https://llvm.org/svn/llvm-project/compiler-rt/trunk at 220328 --- ...tizer-Fix-build-with-_FILE_OFFSET_BITS-64.patch | 37 ++++++++++++++++++++++ 1 file changed, 37 insertions(+) create mode 100644 package/gcc/4.9.3/140-sanitizer-Fix-build-with-_FILE_OFFSET_BITS-64.patch diff --git a/package/gcc/4.9.3/140-sanitizer-Fix-build-with-_FILE_OFFSET_BITS-64.patch b/package/gcc/4.9.3/140-sanitizer-Fix-build-with-_FILE_OFFSET_BITS-64.patch new file mode 100644 index 0000000..55f3228 --- /dev/null +++ b/package/gcc/4.9.3/140-sanitizer-Fix-build-with-_FILE_OFFSET_BITS-64.patch @@ -0,0 +1,37 @@ +From 3c536954a67a883630f4a7513a27f02a892c3dcb Mon Sep 17 00:00:00 2001 +From: Evgeniy Stepanov +Date: Tue, 21 Oct 2014 21:08:13 +0000 +Subject: [PATCH] [sanitizer] Fix build with _FILE_OFFSET_BITS=64. + +Sanitizer source is not affected by _FILE_OFFSET_BITS in general, +but this one file must be built with 32-bit off_t. More details in the code. + +git-svn-id: https://llvm.org/svn/llvm-project/compiler-rt/trunk at 220328 91177308-0d34-0410-b5e6-96231b3b80d8 +Signed-off-by: Max Filippov +--- + lib/sanitizer_common/sanitizer_platform_limits_posix.cc | 8 ++++++++ + 1 file changed, 8 insertions(+) + +diff --git a/libsanitizer/sanitizer_common/sanitizer_platform_limits_posix.cc b/libsanitizer/sanitizer_common/sanitizer_platform_limits_posix.cc +index bbc1108..fc09522 100644 +--- a/libsanitizer/sanitizer_common/sanitizer_platform_limits_posix.cc ++++ b/libsanitizer/sanitizer_common/sanitizer_platform_limits_posix.cc +@@ -13,7 +13,15 @@ + + #include "sanitizer_platform.h" + #if SANITIZER_LINUX || SANITIZER_MAC ++// Tests in this file assume that off_t-dependent data structures match the ++// libc ABI. For example, struct dirent here is what readdir() function (as ++// exported from libc) returns, and not the user-facing "dirent", which ++// depends on _FILE_OFFSET_BITS setting. ++// To get this "true" dirent definition, we undefine _FILE_OFFSET_BITS below. ++#ifdef _FILE_OFFSET_BITS ++#undef _FILE_OFFSET_BITS ++#endif + + #include "sanitizer_internal_defs.h" + #include "sanitizer_platform_limits_posix.h" + +-- +2.1.4 + -- 2.1.4