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5458cd4027
Summary: After https://github.com/emscripten-core/emscripten/pull/8651, Emscripten supports the full UBSan runtime. This includes the VPtr sanitizer. This diff allows clang to generate code that uses the VPtr sanitizer for Emscripten. Patch by Guanzhong Chen Reviewers: tlively, aheejin Reviewed By: aheejin Subscribers: dschuff, sbc100, jgravelle-google, sunfish, cfe-commits Tags: #clang Differential Revision: https://reviews.llvm.org/D62559 llvm-svn: 362004
21 lines
480 B
C++
21 lines
480 B
C++
// RUN: %clang_cc1 -std=c++11 -fsanitize=vptr -emit-llvm %s -o - -triple wasm32-unknown-emscripten | FileCheck %s
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struct S {
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virtual ~S() {}
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int a;
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};
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struct T : S {
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int b;
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};
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// CHECK-LABEL: @_Z15bad_static_castv
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void bad_static_cast() {
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S s;
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// CHECK: br i1 %[[NONNULL:.*]], label %[[CONT:.*]], label %[[MISS:.*]], !prof
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// CHECK: [[MISS]]:
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// CHECK: call void @__ubsan_handle_dynamic_type_cache_miss_abort
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// CHECK: [[CONT]]:
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T &r = static_cast<T &>(s);
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}
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