| Peter Collingbourne | 82437bf | 2015-06-15 21:07:11 +0000 | [diff] [blame] | 1 | ; RUN: opt -safe-stack -S -mtriple=i386-pc-linux-gnu < %s -o - | FileCheck %s |
| 2 | ; RUN: opt -safe-stack -S -mtriple=x86_64-pc-linux-gnu < %s -o - | FileCheck %s |
| 3 | |
| 4 | %struct.nest = type { %struct.pair, %struct.pair } |
| 5 | %struct.pair = type { i32, i32 } |
| 6 | |
| 7 | @.str = private unnamed_addr constant [4 x i8] c"%s\0A\00", align 1 |
| 8 | |
| 9 | ; Nested structure, no arrays, no address-of expressions. |
| 10 | ; Verify that the resulting gep-of-gep does not incorrectly trigger |
| 11 | ; a safe stack protector. |
| 12 | ; safestack attribute |
| 13 | ; Requires no protector. |
| 14 | ; CHECK-LABEL: @foo( |
| 15 | define void @foo() nounwind uwtable safestack { |
| 16 | entry: |
| 17 | ; CHECK-NOT: __safestack_unsafe_stack_ptr |
| 18 | %c = alloca %struct.nest, align 4 |
| 19 | %b = getelementptr inbounds %struct.nest, %struct.nest* %c, i32 0, i32 1 |
| 20 | %_a = getelementptr inbounds %struct.pair, %struct.pair* %b, i32 0, i32 0 |
| 21 | %0 = load i32, i32* %_a, align 4 |
| 22 | %call = call i32 (i8*, ...) @printf(i8* getelementptr inbounds ([4 x i8], [4 x i8]* @.str, i32 0, i32 0), i32 %0) |
| 23 | ret void |
| 24 | } |
| 25 | |
| 26 | declare i32 @printf(i8*, ...) |