c5978f42ec
Sometimes people get minimal crash reports after a UBSAN incident. This change tags each trap with an integer representing the kind of failure encountered, which can aid in tracking down the root cause of the problem.
37 lines
1.4 KiB
C++
37 lines
1.4 KiB
C++
// RUN: %clang_cc1 -O0 -emit-llvm -ftrapv -ftrap-function=mytrap %s -o - | FileCheck %s -check-prefix=TRAPFUNC
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// RUN: %clang_cc1 -O0 -emit-llvm -ftrapv %s -o - | FileCheck %s -check-prefix=NOOPTION
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// TRAPFUNC-LABEL: define {{(dso_local )?}}void @{{_Z12test_builtinv|\"\?test_builtin@@YAXXZ\"}}
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// TRAPFUNC: call void @llvm.trap() [[ATTR0:#[0-9]+]]
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// NOOPTION-LABEL: define {{(dso_local )?}}void @{{_Z12test_builtinv|\"\?test_builtin@@YAXXZ\"}}
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// NOOPTION: call void @llvm.trap(){{$}}
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void test_builtin(void) {
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__builtin_trap();
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}
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// TRAPFUNC-LABEL: define {{.*}}i32 @{{_Z13test_noreturnv|\"\?test_noreturn@@YAHXZ\"}}
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// TRAPFUNC: call void @llvm.trap() [[ATTR0]]
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// NOOPTION-LABEL: define {{.*}}i32 @{{_Z13test_noreturnv|\"\?test_noreturn@@YAHXZ\"}}
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// NOOPTION: call void @llvm.trap(){{$}}
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int test_noreturn(void) {
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}
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// TRAPFUNC-LABEL: define {{.*}}i32 @{{_Z17test_add_overflowii|\"\?test_add_overflow@@YAHHH@Z\"}}
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// TRAPFUNC: call void @llvm.ubsantrap({{.*}}) [[ATTR1:#[0-9]+]]
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// NOOPTION-LABEL: define {{.*}}i32 @{{_Z17test_add_overflowii|\"\?test_add_overflow@@YAHHH@Z\"}}
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// NOOPTION: call void @llvm.ubsantrap({{.*}}) [[ATTR2:#[0-9]+]]
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int test_add_overflow(int a, int b) {
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return a + b;
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}
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// TRAPFUNC: attributes [[ATTR0]] = { {{.*}}"trap-func-name"="mytrap" }
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// TRAPFUNC: attributes [[ATTR1]] = { {{.*}}"trap-func-name"="mytrap" }
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// NOOPTION-NOT: attributes [[ATTR2]] = { {{.*}}"trap-func-name"="mytrap" }
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