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Diffstat (limited to 'test/Transforms/SafeStack/constant-gep-call.ll')
| -rw-r--r-- | test/Transforms/SafeStack/constant-gep-call.ll | 26 |
1 files changed, 26 insertions, 0 deletions
diff --git a/test/Transforms/SafeStack/constant-gep-call.ll b/test/Transforms/SafeStack/constant-gep-call.ll new file mode 100644 index 0000000000000..456c1cb1596b7 --- /dev/null +++ b/test/Transforms/SafeStack/constant-gep-call.ll @@ -0,0 +1,26 @@ +; RUN: opt -safe-stack -S -mtriple=i386-pc-linux-gnu < %s -o - | FileCheck %s +; RUN: opt -safe-stack -S -mtriple=x86_64-pc-linux-gnu < %s -o - | FileCheck %s + +%struct.nest = type { %struct.pair, %struct.pair } +%struct.pair = type { i32, i32 } + +@.str = private unnamed_addr constant [4 x i8] c"%s\0A\00", align 1 + +; Nested structure, no arrays, no address-of expressions. +; Verify that the resulting gep-of-gep does not incorrectly trigger +; a safe stack protector. +; safestack attribute +; Requires no protector. +; CHECK-LABEL: @foo( +define void @foo() nounwind uwtable safestack { +entry: + ; CHECK-NOT: __safestack_unsafe_stack_ptr + %c = alloca %struct.nest, align 4 + %b = getelementptr inbounds %struct.nest, %struct.nest* %c, i32 0, i32 1 + %_a = getelementptr inbounds %struct.pair, %struct.pair* %b, i32 0, i32 0 + %0 = load i32, i32* %_a, align 4 + %call = call i32 (i8*, ...) @printf(i8* getelementptr inbounds ([4 x i8], [4 x i8]* @.str, i32 0, i32 0), i32 %0) + ret void +} + +declare i32 @printf(i8*, ...) |