1 // RUN: %clang_cc1 -fms-extensions -triple i686-pc-windows-msvc -Wcast-calling-convention -DMSVC -Wno-pointer-bool-conversion -verify -x c %s 2 // RUN: %clang_cc1 -fms-extensions -triple i686-pc-windows-msvc -Wcast-calling-convention -DMSVC -Wno-pointer-bool-conversion -verify -x c++ %s 3 // RUN: %clang_cc1 -fms-extensions -triple i686-pc-windows-msvc -Wcast-calling-convention -DMSVC -fdiagnostics-parseable-fixits %s 2>&1 | FileCheck %s --check-prefix=MSFIXIT 4 // RUN: %clang_cc1 -triple i686-pc-windows-gnu -Wcast-calling-convention -fdiagnostics-parseable-fixits %s 2>&1 | FileCheck %s --check-prefix=GNUFIXIT 5 6 // expected-note@+1 {{consider defining 'mismatched_before_winapi' with the 'stdcall' calling convention}} mismatched_before_winapi(int x)7void mismatched_before_winapi(int x) {} 8 9 #ifdef MSVC 10 #define WINAPI __stdcall 11 #else 12 #define WINAPI __attribute__((stdcall)) 13 #endif 14 15 // expected-note@+1 3 {{consider defining 'mismatched' with the 'stdcall' calling convention}} mismatched(int x)16void mismatched(int x) {} 17 18 // expected-note@+1 {{consider defining 'mismatched_declaration' with the 'stdcall' calling convention}} 19 void mismatched_declaration(int x); 20 21 // expected-note@+1 {{consider defining 'suggest_fix_first_redecl' with the 'stdcall' calling convention}} 22 void suggest_fix_first_redecl(int x); 23 void suggest_fix_first_redecl(int x); 24 25 typedef void (WINAPI *callback_t)(int); 26 void take_callback(callback_t callback); 27 mismatched_stdcall(int x)28void WINAPI mismatched_stdcall(int x) {} 29 30 void take_opaque_fn(void (*callback)(int)); 31 main()32int main() { 33 // expected-warning@+1 {{cast between incompatible calling conventions 'cdecl' and 'stdcall'}} 34 take_callback((callback_t)mismatched); 35 36 // expected-warning@+1 {{cast between incompatible calling conventions 'cdecl' and 'stdcall'}} 37 callback_t callback = (callback_t)mismatched; // warns 38 (void)callback; 39 40 // expected-warning@+1 {{cast between incompatible calling conventions 'cdecl' and 'stdcall'}} 41 callback = (callback_t)&mismatched; // warns 42 43 // No warning, just to show we don't drill through other kinds of unary operators. 44 callback = (callback_t)!mismatched; 45 46 // expected-warning@+1 {{cast between incompatible calling conventions 'cdecl' and 'stdcall'}} 47 callback = (callback_t)&mismatched_before_winapi; // warns 48 49 // Probably a bug, but we don't warn. 50 void (*callback2)(int) = mismatched; 51 take_callback((callback_t)callback2); 52 53 // Another way to suppress the warning. 54 take_callback((callback_t)(void*)mismatched); 55 56 // Warn on declarations as well as definitions. 57 // expected-warning@+1 {{cast between incompatible calling conventions 'cdecl' and 'stdcall'}} 58 take_callback((callback_t)mismatched_declaration); 59 // expected-warning@+1 {{cast between incompatible calling conventions 'cdecl' and 'stdcall'}} 60 take_callback((callback_t)suggest_fix_first_redecl); 61 62 // Don't warn, because we're casting from stdcall to cdecl. Usually that means 63 // the programmer is rinsing the function pointer through some kind of opaque 64 // API. 65 take_opaque_fn((void (*)(int))mismatched_stdcall); 66 } 67 68 // MSFIXIT: fix-it:"{{.*}}callingconv-cast.c":{16:6-16:6}:"WINAPI " 69 // MSFIXIT: fix-it:"{{.*}}callingconv-cast.c":{16:6-16:6}:"WINAPI " 70 // MSFIXIT: fix-it:"{{.*}}callingconv-cast.c":{16:6-16:6}:"WINAPI " 71 // MSFIXIT: fix-it:"{{.*}}callingconv-cast.c":{7:6-7:6}:"__stdcall " 72 73 // GNUFIXIT: fix-it:"{{.*}}callingconv-cast.c":{16:6-16:6}:"WINAPI " 74 // GNUFIXIT: fix-it:"{{.*}}callingconv-cast.c":{16:6-16:6}:"WINAPI " 75 // GNUFIXIT: fix-it:"{{.*}}callingconv-cast.c":{16:6-16:6}:"WINAPI " 76 // GNUFIXIT: fix-it:"{{.*}}callingconv-cast.c":{7:6-7:6}:"__attribute__((stdcall)) " 77