30 lines
1.1 KiB
LLVM
30 lines
1.1 KiB
LLVM
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; Test that ASAN will not instrument lifetime markers on alloca offsets.
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;
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; RUN: opt < %s --asan --asan-use-after-scope -S -enable-new-pm=0 | FileCheck %s
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; RUN: opt < %s -passes=asan-function-pipeline --asan-use-after-scope -S | FileCheck %s
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target datalayout = "e-m:o-p270:32:32-p271:32:32-p272:64:64-i64:64-f80:128-n8:16:32:64-S128"
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target triple = "x86_64-apple-macosx10.15.0"
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%t = type { void (%t*)*, void (%t*)*, %sub, i64 }
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%sub = type { i32 }
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define void @foo() sanitize_address {
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entry:
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%0 = alloca %t, align 8
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%x = getelementptr inbounds %t, %t* %0, i64 0, i32 2
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%1 = bitcast %sub* %x to i8*
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call void @llvm.lifetime.start.p0i8(i64 4, i8* nonnull %1)
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call void @bar(%sub* nonnull %x)
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call void @llvm.lifetime.end.p0i8(i64 4, i8* nonnull %1) #3
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ret void
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}
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declare void @llvm.lifetime.start.p0i8(i64 immarg, i8* nocapture)
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declare void @bar(%sub*)
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declare void @llvm.lifetime.end.p0i8(i64 immarg, i8* nocapture)
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; CHECK: store i64 %[[STACK_BASE:.+]], i64* %asan_local_stack_base, align 8
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; CHECK-NOT: store i8 0
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; CHECK: call void @bar(%sub* nonnull %x)
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