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; 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
@.str = private unnamed_addr constant [4 x i8] c"%s\0A\00", align 1
define void @bad_store() nounwind uwtable safestack {
entry:
; CHECK-LABEL: @bad_store(
; CHECK: __safestack_unsafe_stack_ptr
; CHECK: ret void
%a = alloca i32, align 4
%0 = ptrtoint i32* %a to i64
%1 = inttoptr i64 %0 to i64*
store i64 zeroinitializer, i64* %1
ret void
}
define void @good_store() nounwind uwtable safestack {
entry:
; CHECK-LABEL: @good_store(
; CHECK-NOT: __safestack_unsafe_stack_ptr
; CHECK: ret void
%a = alloca i32, align 4
%0 = bitcast i32* %a to i8*
store i8 zeroinitializer, i8* %0
ret void
}
define void @overflow_gep_store() nounwind uwtable safestack {
entry:
; CHECK-LABEL: @overflow_gep_store(
; CHECK: __safestack_unsafe_stack_ptr
; CHECK: ret void
%a = alloca i32, align 4
%0 = bitcast i32* %a to i8*
%1 = getelementptr i8, i8* %0, i32 4
store i8 zeroinitializer, i8* %1
ret void
}
define void @underflow_gep_store() nounwind uwtable safestack {
entry:
; CHECK-LABEL: @underflow_gep_store(
; CHECK: __safestack_unsafe_stack_ptr
; CHECK: ret void
%a = alloca i32, align 4
%0 = bitcast i32* %a to i8*
%1 = getelementptr i8, i8* %0, i32 -1
store i8 zeroinitializer, i8* %1
ret void
}
define void @good_gep_store() nounwind uwtable safestack {
entry:
; CHECK-LABEL: @good_gep_store(
; CHECK-NOT: __safestack_unsafe_stack_ptr
; CHECK: ret void
%a = alloca i32, align 4
%0 = bitcast i32* %a to i8*
%1 = getelementptr i8, i8* %0, i32 3
store i8 zeroinitializer, i8* %1
ret void
}
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