escape-gep-store.ll 824 B

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  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. %struct.pair = type { i32, i32 }
  4. @.str = private unnamed_addr constant [4 x i8] c"%s\0A\00", align 1
  5. ; Addr-of struct element. (GEP followed by store).
  6. ; safestack attribute
  7. ; Requires protector.
  8. define void @foo() nounwind uwtable safestack {
  9. entry:
  10. ; CHECK: __safestack_unsafe_stack_ptr
  11. %c = alloca %struct.pair, align 4
  12. %b = alloca i32*, align 8
  13. %y = getelementptr inbounds %struct.pair, %struct.pair* %c, i32 0, i32 1
  14. store i32* %y, i32** %b, align 8
  15. %0 = load i32*, i32** %b, align 8
  16. %call = call i32 (i8*, ...) @printf(i8* getelementptr inbounds ([4 x i8], [4 x i8]* @.str, i32 0, i32 0), i32* %0)
  17. ret void
  18. }
  19. declare i32 @printf(i8*, ...)