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 typedef void (WINAPI *callback_t)(int); 19 void take_callback(callback_t callback); 20 mismatched_stdcall(int x)21void WINAPI mismatched_stdcall(int x) {} 22 23 void take_opaque_fn(void (*callback)(int)); 24 main()25int main() { 26 // expected-warning@+1 {{cast between incompatible calling conventions 'cdecl' and 'stdcall'}} 27 take_callback((callback_t)mismatched); 28 29 // expected-warning@+1 {{cast between incompatible calling conventions 'cdecl' and 'stdcall'}} 30 callback_t callback = (callback_t)mismatched; // warns 31 (void)callback; 32 33 // expected-warning@+1 {{cast between incompatible calling conventions 'cdecl' and 'stdcall'}} 34 callback = (callback_t)&mismatched; // warns 35 36 // No warning, just to show we don't drill through other kinds of unary operators. 37 callback = (callback_t)!mismatched; 38 39 // expected-warning@+1 {{cast between incompatible calling conventions 'cdecl' and 'stdcall'}} 40 callback = (callback_t)&mismatched_before_winapi; // warns 41 42 // Probably a bug, but we don't warn. 43 void (*callback2)(int) = mismatched; 44 take_callback((callback_t)callback2); 45 46 // Another way to suppress the warning. 47 take_callback((callback_t)(void*)mismatched); 48 49 // Don't warn, because we're casting from stdcall to cdecl. Usually that means 50 // the programmer is rinsing the function pointer through some kind of opaque 51 // API. 52 take_opaque_fn((void (*)(int))mismatched_stdcall); 53 } 54 55 // MSFIXIT: fix-it:"{{.*}}callingconv-cast.c":{16:6-16:6}:"WINAPI " 56 // MSFIXIT: fix-it:"{{.*}}callingconv-cast.c":{16:6-16:6}:"WINAPI " 57 // MSFIXIT: fix-it:"{{.*}}callingconv-cast.c":{16:6-16:6}:"WINAPI " 58 // MSFIXIT: fix-it:"{{.*}}callingconv-cast.c":{7:6-7:6}:"__stdcall " 59 60 // GNUFIXIT: fix-it:"{{.*}}callingconv-cast.c":{16:6-16:6}:"WINAPI " 61 // GNUFIXIT: fix-it:"{{.*}}callingconv-cast.c":{16:6-16:6}:"WINAPI " 62 // GNUFIXIT: fix-it:"{{.*}}callingconv-cast.c":{16:6-16:6}:"WINAPI " 63 // GNUFIXIT: fix-it:"{{.*}}callingconv-cast.c":{7:6-7:6}:"__attribute__((stdcall)) " 64