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 7 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" 10 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 14 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 19 20 define void @Func1() sanitize_address { 21 entry: 22 ; CHECK-LABEL: Func1 23 24 ; CHECK-STATIC: alloca [192 x i8] 25 ; CHECK-STATIC: %asan_local_stack_base = alloca i64 26 ; CHECK-DYNAMIC: alloca i8, i64 192 27 28 ; CHECK-NOT: alloca 29 ; CHECK: ret void 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 39 ret void 40 } 41 42 define void @Func2() sanitize_address { 43 entry: 44 ; CHECK-LABEL: Func2 45 46 ; CHECK-STATIC: alloca [864 x i8] 47 ; CHECK-STATIC: %asan_local_stack_base = alloca i64 48 ; CHECK-DYNAMIC: alloca i8, i64 864 49 50 ; CHECK-NOT: alloca 51 ; CHECK: ret void 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 61 ret void 62 } 63 64 ; Check that we reorder vars according to alignment and handle large alignments. 65 define void @Func3() sanitize_address { 66 entry: 67 ; CHECK-LABEL: Func3 68 69 ; CHECK-STATIC: alloca [768 x i8] 70 ; CHECK-STATIC: %asan_local_stack_base = alloca i64 71 ; CHECK-DYNAMIC: alloca i8, i64 768 72 73 ; CHECK-NOT: alloca 74 ; CHECK: ret void 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 84 ret void 85 } 86 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 !18 100 ret void 101 } 102 103 !llvm.dbg.cu = !{!0} 104 !llvm.module.flags = !{!3, !4} 105 !3 = !{i32 2, !"Dwarf Version", i32 4} 106 !4 = !{i32 2, !"Debug Info Version", i32 3} 107 108 !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) 113 114 !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) 119
