| ; 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 |
| } |