From eaa85136a5d250fa39285c45abfd4979470ac09f Mon Sep 17 00:00:00 2001 From: Derek Bruening Date: Wed, 6 Jul 2016 20:13:40 +0000 Subject: [PATCH] [sanitizer] Handle null in internal_sigaction_syscall Summary: Adds support for nullptr as the action parameter to internal_sigaction_syscall(). Reviewers: aizatsky Subscribers: kubabrecka, vitalybuka, zhaoqin, kcc, eugenis, llvm-commits Differential Revision: http://reviews.llvm.org/D22061 llvm-svn: 274665 --- compiler-rt/lib/sanitizer_common/sanitizer_linux.cc | 2 ++ 1 file changed, 2 insertions(+) diff --git a/compiler-rt/lib/sanitizer_common/sanitizer_linux.cc b/compiler-rt/lib/sanitizer_common/sanitizer_linux.cc index 90c3fe8d3d5b..72551e323166 100644 --- a/compiler-rt/lib/sanitizer_common/sanitizer_linux.cc +++ b/compiler-rt/lib/sanitizer_common/sanitizer_linux.cc @@ -673,6 +673,8 @@ int internal_sigaction_norestorer(int signum, const void *act, void *oldact) { // We disable for Go simply because we have not yet added to buildgo.sh. #if defined(__x86_64__) && !SANITIZER_GO int internal_sigaction_syscall(int signum, const void *act, void *oldact) { + if (act == nullptr) + return internal_sigaction_norestorer(signum, act, oldact); __sanitizer_sigaction u_adjust; internal_memcpy(&u_adjust, act, sizeof(u_adjust)); #if !SANITIZER_ANDROID || !SANITIZER_MIPS32