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4f755deaf6
An updated version of r191586 with bug fix. Struct-path aware TBAA generates tags to specify the access path, while scalar TBAA only generates tags to scalar types. We should not generate a TBAA tag with null being the first field. When a TBAA type node is null, the tag should be null too. Make sure we don't decorate an instruction with a null TBAA tag. Added a testing case for the bug reported by Richard with -relaxed-aliasing and -fsanitizer=thread. llvm-svn: 192145
15 lines
359 B
C++
15 lines
359 B
C++
// RUN: %clang_cc1 -triple x86_64-apple-darwin -emit-llvm -o - %s -fsanitize=thread -relaxed-aliasing -O1 | FileCheck %s
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// Make sure we do not crash when relaxed-aliasing is on.
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// CHECK-NOT: !tbaa
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struct iterator { void *node; };
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struct pair {
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iterator first;
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pair(const iterator &a) : first(a) {}
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};
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void equal_range() {
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(void)pair(iterator());
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}
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