27 lines
1014 B
LLVM
27 lines
1014 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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%struct.nest = type { %struct.pair, %struct.pair }
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%struct.pair = type { i32, i32 }
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@.str = private unnamed_addr constant [4 x i8] c"%s\0A\00", align 1
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; Nested structure, no arrays, no address-of expressions.
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; Verify that the resulting gep-of-gep does not incorrectly trigger
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; a safe stack protector.
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; safestack attribute
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; Requires no protector.
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; CHECK-LABEL: @foo(
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define void @foo() nounwind uwtable safestack {
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entry:
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; CHECK-NOT: __safestack_unsafe_stack_ptr
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%c = alloca %struct.nest, align 4
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%b = getelementptr inbounds %struct.nest, %struct.nest* %c, i32 0, i32 1
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%_a = getelementptr inbounds %struct.pair, %struct.pair* %b, i32 0, i32 0
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%0 = load i32, i32* %_a, align 4
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%call = call i32 (i8*, ...) @printf(i8* getelementptr inbounds ([4 x i8], [4 x i8]* @.str, i32 0, i32 0), i32 %0)
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ret void
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}
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declare i32 @printf(i8*, ...)
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