1 // RUN: echo "int extra_global;" > %t.extra-source.cpp
2 // RUN: echo "global:*ignorelisted_global*" > %t.ignorelist
3 // RUN: %clang_cc1 -include %t.extra-source.cpp -fsanitize=address -fsanitize-ignorelist=%t.ignorelist -emit-llvm -o - %s | FileCheck %s --check-prefixes=CHECK,ASAN
4 // RUN: %clang_cc1 -include %t.extra-source.cpp -fsanitize=kernel-address -fsanitize-ignorelist=%t.ignorelist -emit-llvm -o - %s | FileCheck %s --check-prefixes=CHECK,KASAN
5 // The ignorelist file uses regexps, so Windows path backslashes.
6 // RUN: echo "src:%s" | sed -e 's/\\/\\\\/g' > %t.ignorelist-src
7 // RUN: %clang_cc1 -include %t.extra-source.cpp -fsanitize=address -fsanitize-ignorelist=%t.ignorelist-src -emit-llvm -o - %s | FileCheck %s --check-prefix=IGNORELIST-SRC
8 // RUN: %clang_cc1 -include %t.extra-source.cpp -fsanitize=kernel-address -fsanitize-ignorelist=%t.ignorelist-src -emit-llvm -o - %s | FileCheck %s --check-prefix=IGNORELIST-SRC
9 
10 int global;
11 int dyn_init_global = global;
12 int __attribute__((no_sanitize("address"))) attributed_global;
13 int __attribute__((disable_sanitizer_instrumentation)) disable_instrumentation_global;
14 int ignorelisted_global;
15 
16 int __attribute__((section("__DATA, __common"))) sectioned_global; // KASAN - ignore globals in a section
17 extern "C" {
18 int __special_global; // KASAN - ignore globals with __-prefix
19 }
20 
21 void func() {
22   static int static_var = 0;
23   const char *literal = "Hello, world!";
24 }
25 
26 // ASAN: sectioned_global{{.*}} global { i32, [28 x i8] }{{.*}}, align 32
27 // KASAN: sectioned_global{{.*}} global i32
28 // ASAN: @__special_global{{.*}} global { i32, [28 x i8] }{{.*}}, align 32
29 // KASAN: @__special_global{{.*}} global i32
30 
31 /// Without -fasynchronous-unwind-tables, ctor and dtor get the uwtable attribute.
32 // CHECK-LABEL: define internal void @asan.module_ctor() #[[#ATTR:]] {
33 // ASAN-NEXT: call void @__asan_init
34 // ASAN-NEXT: call void @__asan_version_mismatch_check
35 // KASAN-NOT: call void @__asan_init
36 // KASAN-NOT: call void @__asan_version_mismatch_check
37 // ASAN-NEXT: call void @__asan_register_globals({{.*}}, i{{32|64}} 7)
38 // KASAN-NEXT: call void @__asan_register_globals({{.*}}, i{{32|64}} 5)
39 // CHECK-NEXT: ret void
40 
41 // CHECK:      define internal void @asan.module_dtor() #[[#ATTR]] {
42 // CHECK-NEXT: call void @__asan_unregister_globals
43 // CHECK-NEXT: ret void
44 
45 // CHECK: attributes #[[#ATTR]] = { nounwind }
46 
47 /// If -fasynchronous-unwind-tables, set the module flag "uwtable". ctor/dtor
48 /// will thus get the uwtable attribute.
49 // RUN: %clang_cc1 -emit-llvm -fsanitize=address -funwind-tables=2 -o - %s | FileCheck %s --check-prefixes=UWTABLE
50 // UWTABLE: define internal void @asan.module_dtor() #[[#ATTR:]] {
51 // UWTABLE: attributes #[[#ATTR]] = { nounwind uwtable }
52 // UWTABLE: ![[#]] = !{i32 7, !"uwtable", i32 2}
53 
54 // CHECK: !llvm.asan.globals = !{![[EXTRA_GLOBAL:[0-9]+]], ![[GLOBAL:[0-9]+]], ![[DYN_INIT_GLOBAL:[0-9]+]], ![[ATTR_GLOBAL:[0-9]+]], ![[DISABLE_INSTR_GLOBAL:[0-9]+]], ![[IGNORELISTED_GLOBAL:[0-9]+]], ![[SECTIONED_GLOBAL:[0-9]+]], ![[SPECIAL_GLOBAL:[0-9]+]], ![[STATIC_VAR:[0-9]+]], ![[LITERAL:[0-9]+]]}
55 // CHECK: ![[EXTRA_GLOBAL]] = !{{{.*}} ![[EXTRA_GLOBAL_LOC:[0-9]+]], !"extra_global", i1 false, i1 false}
56 // CHECK: ![[EXTRA_GLOBAL_LOC]] = !{!"{{.*}}extra-source.cpp", i32 1, i32 5}
57 // CHECK: ![[GLOBAL]] = !{{{.*}} ![[GLOBAL_LOC:[0-9]+]], !"global", i1 false, i1 false}
58 // CHECK: ![[GLOBAL_LOC]] = !{!"{{.*}}asan-globals.cpp", i32 10, i32 5}
59 // CHECK: ![[DYN_INIT_GLOBAL]] = !{{{.*}} ![[DYN_INIT_LOC:[0-9]+]], !"dyn_init_global", i1 true, i1 false}
60 // CHECK: ![[DYN_INIT_LOC]] = !{!"{{.*}}asan-globals.cpp", i32 11, i32 5}
61 // CHECK: ![[ATTR_GLOBAL]] = !{{{.*attributed_global.*}}, null, null, i1 false, i1 true}
62 // CHECK: ![[DISABLE_INSTR_GLOBAL]] = !{{{.*disable_instrumentation_global.*}}, null, null, i1 false, i1 true}
63 // CHECK: ![[IGNORELISTED_GLOBAL]] = !{{{.*ignorelisted_global.*}}, null, null, i1 false, i1 true}
64 // CHECK: ![[SECTIONED_GLOBAL]] = !{{{.*}} ![[SECTIONED_GLOBAL_LOC:[0-9]+]], !"sectioned_global", i1 false, i1 false}
65 // CHECK: ![[SECTIONED_GLOBAL_LOC]] = !{!"{{.*}}asan-globals.cpp", i32 16, i32 50}
66 // CHECK: ![[SPECIAL_GLOBAL]] = !{{{.*}} ![[SPECIAL_GLOBAL_LOC:[0-9]+]], !"__special_global", i1 false, i1 false}
67 // CHECK: ![[SPECIAL_GLOBAL_LOC]] = !{!"{{.*}}asan-globals.cpp", i32 18, i32 5}
68 // CHECK: ![[STATIC_VAR]] = !{{{.*}} ![[STATIC_LOC:[0-9]+]], !"static_var", i1 false, i1 false}
69 // CHECK: ![[STATIC_LOC]] = !{!"{{.*}}asan-globals.cpp", i32 22, i32 14}
70 // CHECK: ![[LITERAL]] = !{{{.*}} ![[LITERAL_LOC:[0-9]+]], !"<string literal>", i1 false, i1 false}
71 // CHECK: ![[LITERAL_LOC]] = !{!"{{.*}}asan-globals.cpp", i32 23, i32 25}
72 
73 // IGNORELIST-SRC: !llvm.asan.globals = !{![[EXTRA_GLOBAL:[0-9]+]], ![[GLOBAL:[0-9]+]], ![[DYN_INIT_GLOBAL:[0-9]+]], ![[ATTR_GLOBAL:[0-9]+]], ![[DISABLE_INSTR_GLOBAL:[0-9]+]], ![[IGNORELISTED_GLOBAL:[0-9]+]], ![[SECTIONED_GLOBAL:[0-9]+]], ![[SPECIAL_GLOBAL:[0-9]+]], ![[STATIC_VAR:[0-9]+]], ![[LITERAL:[0-9]+]]}
74 // IGNORELIST-SRC: ![[EXTRA_GLOBAL]] = !{{{.*}} ![[EXTRA_GLOBAL_LOC:[0-9]+]], !"extra_global", i1 false, i1 false}
75 // IGNORELIST-SRC: ![[EXTRA_GLOBAL_LOC]] = !{!"{{.*}}extra-source.cpp", i32 1, i32 5}
76 // IGNORELIST-SRC: ![[GLOBAL]] = !{{{.*}} null, null, i1 false, i1 true}
77 // IGNORELIST-SRC: ![[DYN_INIT_GLOBAL]] = !{{{.*}} null, null, i1 true, i1 true}
78 // IGNORELIST-SRC: ![[ATTR_GLOBAL]] = !{{{.*attributed_global.*}}, null, null, i1 false, i1 true}
79 // IGNORELIST-SRC: ![[DISABLE_INSTR_GLOBAL]] = !{{{.*disable_instrumentation_global.*}}, null, null, i1 false, i1 true}
80 // IGNORELIST-SRC: ![[IGNORELISTED_GLOBAL]] = !{{{.*ignorelisted_global.*}}, null, null, i1 false, i1 true}
81 // IGNORELIST-SRC: ![[SECTIONED_GLOBAL]] = !{{{.*}} null, null, i1 false, i1 true}
82 // IGNORELIST-SRC: ![[SPECIAL_GLOBAL]] = !{{{.*}} null, null, i1 false, i1 true}
83 // IGNORELIST-SRC: ![[STATIC_VAR]] = !{{{.*}} null, null, i1 false, i1 true}
84 // IGNORELIST-SRC: ![[LITERAL]] = !{{{.*}} null, null, i1 false, i1 true}
85