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Diffstat (limited to 'test/Instrumentation/MemorySanitizer/check-constant-shadow.ll')
| -rw-r--r-- | test/Instrumentation/MemorySanitizer/check-constant-shadow.ll | 15 |
1 files changed, 15 insertions, 0 deletions
diff --git a/test/Instrumentation/MemorySanitizer/check-constant-shadow.ll b/test/Instrumentation/MemorySanitizer/check-constant-shadow.ll new file mode 100644 index 0000000..11e4410 --- /dev/null +++ b/test/Instrumentation/MemorySanitizer/check-constant-shadow.ll @@ -0,0 +1,15 @@ +; RUN: opt < %s -msan -msan-check-constant-shadow=1 -S | FileCheck %s + +target datalayout = "e-p:64:64:64-i1:8:8-i8:8:8-i16:16:16-i32:32:32-i64:64:64-f32:32:32-f64:64:64-v64:64:64-v128:128:128-a0:0:64-s0:64:64-f80:128:128-n8:16:32:64-S128" +target triple = "x86_64-unknown-linux-gnu" + +; Test that returning a literal undef from main() triggers an MSan warning. + +define i32 @main() nounwind uwtable sanitize_memory { +entry: + ret i32 undef +} + +; CHECK-LABEL: @main +; CHECK: call void @__msan_warning_noreturn +; CHECK: ret i32 undef |