1 // REQUIRES: x86-registered-target
2 // RUN: %clang -target i386-apple-darwin -std=c++11 -fblocks -Wframe-larger-than=70 -Xclang -verify -o /dev/null -c %s
3 // RUN: %clang -target i386-apple-darwin -std=c++11 -fblocks -Wframe-larger-than=70 -Xclang -verify -o /dev/null -c %s -DIS_SYSHEADER
4 
5 // Test that:
6 //  * The driver passes the option through to the backend.
7 //  * The frontend diagnostic handler 'demangles' and resolves the correct function definition.
8 
9 // Test that link invocations don't emit an "argument unused during compilation" diagnostic.
10 // RUN: touch %t.o
11 // RUN: %clang -Werror -Wframe-larger-than=0 %t.o -###  2>&1 | not grep ' error: '
12 
13 // TODO: Support rich backend diagnostics for Objective-C methods.
14 
15 // Backend diagnostics aren't suppressed in system headers because such results
16 // are significant and actionable.
17 #ifdef IS_HEADER
18 
19 #ifdef IS_SYSHEADER
20 #pragma clang system_header
21 #endif
22 
23 extern void doIt(char *);
24 
25 void frameSizeWarning(int, int) {}
26 
27 void frameSizeWarning();
28 
29 void frameSizeWarning() { // expected-warning-re {{stack frame size of {{[0-9]+}} bytes in function 'frameSizeWarning'}}
30   char buffer[80];
31   doIt(buffer);
32 }
33 
34 void frameSizeWarning();
35 
36 void frameSizeWarning(int) {}
37 
38 #pragma GCC diagnostic push
39 #pragma GCC diagnostic ignored "-Wframe-larger-than="
40 void frameSizeWarningIgnored() {
41   char buffer[80];
42   doIt(buffer);
43 }
44 #pragma GCC diagnostic pop
45 
46 #pragma GCC diagnostic push
47 #ifndef IS_SYSHEADER
48 // expected-warning@+2 {{unknown warning group '-Wframe-larger-than'}}
49 #endif
50 #pragma GCC diagnostic ignored "-Wframe-larger-than"
51 #pragma GCC diagnostic pop
52 
53 void frameSizeLocalClassWarning() {
54   struct S {
55     S() { // expected-warning-re {{stack frame size of {{[0-9]+}} bytes in function 'frameSizeLocalClassWarning()::S::S'}}
56       char buffer[80];
57       doIt(buffer);
58     }
59   };
60   S();
61 }
62 
63 void frameSizeLambdaWarning() {
64   auto fn =
65       []() { // expected-warning-re {{stack frame size of {{[0-9]+}} bytes in lambda expression}}
66     char buffer[80];
67     doIt(buffer);
68   };
69   fn();
70 }
71 
72 void frameSizeBlocksWarning() {
73   auto fn =
74       ^() { // expected-warning-re {{stack frame size of {{[0-9]+}} bytes in block literal}}
75     char buffer[80];
76     doIt(buffer);
77   };
78   fn();
79 }
80 
81 #else
82 
83 #define IS_HEADER
84 #include __FILE__
85 #endif
86