27 lines
1014 B
LLVM
27 lines
1014 B
LLVM
; 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*, ...)
|