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escape-addr-pointer.ll 683 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. @.str = private unnamed_addr constant [4 x i8] c"%s\0A\00", align 1
  4. ; Addr-of a pointer
  5. ; safestack attribute
  6. ; Requires protector.
  7. define void @foo() nounwind uwtable safestack {
  8. entry:
  9. ; CHECK: __safestack_unsafe_stack_ptr
  10. %a = alloca i32*, align 8
  11. %b = alloca i32**, align 8
  12. %call = call i32* @getp()
  13. store i32* %call, i32** %a, align 8
  14. store i32** %a, i32*** %b, align 8
  15. %0 = load i32**, i32*** %b, align 8
  16. call void @funcall2(i32** %0)
  17. ret void
  18. }
  19. declare void @funcall2(i32**)
  20. declare i32* @getp()