1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
| // RUN: %clang_cc1 -std=c++03 -fblocks -triple x86_64-windows-msvc -fms-extensions -fsyntax-only -fexceptions -fcxx-exceptions -verify %s
// RUN: %clang_cc1 -std=c++11 -fblocks -triple x86_64-windows-msvc -fms-extensions -fsyntax-only -fexceptions -fcxx-exceptions -verify %s
// Basic usage should work.
int safe_div(int n, int d) {
int r;
__try {
r = n / d;
} __except(_exception_code() == 0xC0000094) {
r = 0;
}
return r;
}
void might_crash();
// Diagnose obvious builtin mis-usage.
void bad_builtin_scope() {
__try {
might_crash();
} __except(1) {
}
_exception_code(); // expected-error {{'_exception_code' only allowed in __except block or filter expression}}
_exception_info(); // expected-error {{'_exception_info' only allowed in __except filter expression}}
}
// Diagnose obvious builtin misusage in a template.
template <void FN()>
void bad_builtin_scope_template() {
__try {
FN();
} __except(1) {
}
_exception_code(); // expected-error {{'_exception_code' only allowed in __except block or filter expression}}
_exception_info(); // expected-error {{'_exception_info' only allowed in __except filter expression}}
}
void instantiate_bad_scope_tmpl() {
bad_builtin_scope_template<might_crash>();
}
#if __cplusplus < 201103L
// FIXME: Diagnose this case. For now we produce undef in codegen.
template <typename T, T FN()>
T func_template() {
return FN();
}
void inject_builtins() {
func_template<void *, __exception_info>();
func_template<unsigned long, __exception_code>();
}
#endif
void use_seh_after_cxx() {
try { // expected-note {{conflicting 'try' here}}
might_crash();
} catch (int) {
}
__try { // expected-error {{cannot use C++ 'try' in the same function as SEH '__try'}}
might_crash();
} __except(1) {
}
}
void use_cxx_after_seh() {
__try { // expected-note {{conflicting '__try' here}}
might_crash();
} __except(1) {
}
try { // expected-error {{cannot use C++ 'try' in the same function as SEH '__try'}}
might_crash();
} catch (int) {
}
}
#if __cplusplus >= 201103L
void use_seh_in_lambda() {
([]() {
__try {
might_crash();
} __except(1) {
}
})();
try {
might_crash();
} catch (int) {
}
}
#endif
void use_seh_in_block() {
void (^b)() = ^{
__try { // expected-error {{cannot use SEH '__try' in blocks, captured regions, or Obj-C method decls}}
might_crash();
} __except(1) {
}
};
try {
b();
} catch (int) {
}
}
void (^use_seh_in_global_block)() = ^{
__try { // expected-error {{cannot use SEH '__try' in blocks, captured regions, or Obj-C method decls}}
might_crash();
} __except(1) {
}
};
void (^use_cxx_in_global_block)() = ^{
try {
might_crash();
} catch(int) {
}
};
|