24 lines
824 B
LLVM
24 lines
824 B
LLVM
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; RUN: opt -safe-stack -S -mtriple=i386-pc-linux-gnu < %s -o - | FileCheck %s
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; RUN: opt -safe-stack -S -mtriple=x86_64-pc-linux-gnu < %s -o - | FileCheck %s
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@.str = private unnamed_addr constant [4 x i8] c"%s\0A\00", align 1
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; Addr-of a local cast to a ptr of a different type
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; (e.g., int a; ... ; float *b = &a;)
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; safestack attribute
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; Requires protector.
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define void @foo() nounwind uwtable safestack {
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entry:
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; CHECK: __safestack_unsafe_stack_ptr
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%a = alloca i32, align 4
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%b = alloca float*, align 8
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store i32 0, i32* %a, align 4
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%0 = bitcast i32* %a to float*
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store float* %0, float** %b, align 8
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%1 = load float*, float** %b, align 8
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%call = call i32 (i8*, ...) @printf(i8* getelementptr inbounds ([4 x i8], [4 x i8]* @.str, i32 0, i32 0), float* %1)
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ret void
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}
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declare i32 @printf(i8*, ...)
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