1 ; Test the ASan's stack layout.
2 ; More tests in tests/Transforms/Utils/ASanStackFrameLayoutTest.cpp
3 ; RUN: opt < %s -asan -asan-module -asan-stack-dynamic-alloca=0 -asan-use-after-scope -S \
4 ; RUN: | FileCheck %s --check-prefixes=CHECK,CHECK-STATIC
5 ; RUN: opt < %s -asan -asan-module -asan-stack-dynamic-alloca=1 -asan-use-after-scope -S \
6 ; RUN: | FileCheck %s --check-prefixes=CHECK,CHECK-DYNAMIC
8 target datalayout = "e-p:64:64:64-i1:8:8-i8:8:8-i16:16:16-i32:32:32-i64:64:64-f32:32:32-f64:64:64-v64:64:64-v128:128:128-a0:0:64-s0:64:64-f80:128:128-n8:16:32:64-S128"
9 target triple = "x86_64-unknown-linux-gnu"
11 declare void @Use(i8*)
12 declare void @llvm.lifetime.start.p0i8(i64, i8* nocapture) nounwind
13 declare void @llvm.lifetime.end.p0i8(i64, i8* nocapture) nounwind
15 ; CHECK: private unnamed_addr constant{{.*}}3 32 10 3 XXX 64 20 3 YYY 128 30 3 ZZZ\0
16 ; CHECK: private unnamed_addr constant{{.*}}3 32 5 3 AAA 64 55 3 BBB 160 555 3 CCC\0
17 ; CHECK: private unnamed_addr constant{{.*}}3 256 128 3 CCC 448 128 3 BBB 608 128 3 AAA\0
18 ; CHECK: private unnamed_addr constant{{.*}}2 32 4 3 AAA 48 4 5 BBB:7\0
20 define void @Func1() sanitize_address {
24 ; CHECK-STATIC: alloca [192 x i8]
25 ; CHECK-STATIC: %asan_local_stack_base = alloca i64
26 ; CHECK-DYNAMIC: alloca i8, i64 192
30 %XXX = alloca [10 x i8], align 1
31 %YYY = alloca [20 x i8], align 1
32 %ZZZ = alloca [30 x i8], align 1
33 %arr1.ptr = bitcast [10 x i8]* %XXX to i8*
34 store volatile i8 0, i8* %arr1.ptr
35 %arr2.ptr = bitcast [20 x i8]* %YYY to i8*
36 store volatile i8 0, i8* %arr2.ptr
37 %arr3.ptr = bitcast [30 x i8]* %ZZZ to i8*
38 store volatile i8 0, i8* %arr3.ptr
42 define void @Func2() sanitize_address {
46 ; CHECK-STATIC: alloca [864 x i8]
47 ; CHECK-STATIC: %asan_local_stack_base = alloca i64
48 ; CHECK-DYNAMIC: alloca i8, i64 864
52 %AAA = alloca [5 x i8], align 1
53 %BBB = alloca [55 x i8], align 1
54 %CCC = alloca [555 x i8], align 1
55 %arr1.ptr = bitcast [5 x i8]* %AAA to i8*
56 store volatile i8 0, i8* %arr1.ptr
57 %arr2.ptr = bitcast [55 x i8]* %BBB to i8*
58 store volatile i8 0, i8* %arr2.ptr
59 %arr3.ptr = bitcast [555 x i8]* %CCC to i8*
60 store volatile i8 0, i8* %arr3.ptr
64 ; Check that we reorder vars according to alignment and handle large alignments.
65 define void @Func3() sanitize_address {
69 ; CHECK-STATIC: alloca [768 x i8]
70 ; CHECK-STATIC: %asan_local_stack_base = alloca i64
71 ; CHECK-DYNAMIC: alloca i8, i64 768
75 %AAA = alloca [128 x i8], align 16
76 %BBB = alloca [128 x i8], align 64
77 %CCC = alloca [128 x i8], align 256
78 %arr1.ptr = bitcast [128 x i8]* %AAA to i8*
79 store volatile i8 0, i8* %arr1.ptr
80 %arr2.ptr = bitcast [128 x i8]* %BBB to i8*
81 store volatile i8 0, i8* %arr2.ptr
82 %arr3.ptr = bitcast [128 x i8]* %CCC to i8*
83 store volatile i8 0, i8* %arr3.ptr
87 ; Check that line numbers are attached to variable names if variable
88 ; in the same file as a function.
89 define void @Func5() sanitize_address #0 !dbg !11 {
90 %AAA = alloca i32, align 4 ; File is not the same as !11
91 %BBB = alloca i32, align 4 ; File is the same as !11
92 %BBB.ptr = bitcast i32* %BBB to i8*
93 call void @llvm.lifetime.start.p0i8(i64 4, i8* nonnull %BBB.ptr), !dbg !12
94 store volatile i32 5, i32* %BBB, align 4
95 %AAA.ptr = bitcast i32* %AAA to i8*
96 call void @llvm.lifetime.start.p0i8(i64 4, i8* nonnull %AAA.ptr), !dbg !14
97 store volatile i32 3, i32* %AAA, align 4
98 call void @llvm.lifetime.end.p0i8(i64 4, i8* nonnull %AAA.ptr), !dbg !17
99 call void @llvm.lifetime.end.p0i8(i64 4, i8* nonnull %BBB.ptr), !dbg !18
104 !llvm.module.flags = !{!3, !4}
105 !3 = !{i32 2, !"Dwarf Version", i32 4}
106 !4 = !{i32 2, !"Debug Info Version", i32 3}
108 !0 = distinct !DICompileUnit(language: DW_LANG_C99, file: !1)
109 !1 = !DIFile(filename: "../file1.c", directory: "/")
110 !11 = distinct !DISubprogram(name: "Func5", scope: !1, file: !1, line: 6, unit: !0)
111 !12 = !DILocation(line: 7, column: 3, scope: !11)
112 !18 = !DILocation(line: 10, column: 1, scope: !11)
114 !21 = !DIFile(filename: "../file2.c", directory: "/")
115 !6 = distinct !DISubprogram(name: "Func4", scope: !1, file: !21, line: 2, unit: !0)
116 !15 = distinct !DILocation(line: 8, column: 3, scope: !11)
117 !14 = !DILocation(line: 3, column: 3, scope: !6, inlinedAt: !15)
118 !17 = !DILocation(line: 4, column: 1, scope: !6, inlinedAt: !15)