77 lines
3.5 KiB
C
77 lines
3.5 KiB
C
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// RUN: %clang_cc1 -fms-extensions -triple i686-pc-windows-msvc -Wcast-calling-convention -DMSVC -Wno-pointer-bool-conversion -verify -x c %s
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// RUN: %clang_cc1 -fms-extensions -triple i686-pc-windows-msvc -Wcast-calling-convention -DMSVC -Wno-pointer-bool-conversion -verify -x c++ %s
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// 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
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// RUN: %clang_cc1 -triple i686-pc-windows-gnu -Wcast-calling-convention -fdiagnostics-parseable-fixits %s 2>&1 | FileCheck %s --check-prefix=GNUFIXIT
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// expected-note@+1 {{consider defining 'mismatched_before_winapi' with the 'stdcall' calling convention}}
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void mismatched_before_winapi(int x) {}
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#ifdef MSVC
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#define WINAPI __stdcall
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#else
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#define WINAPI __attribute__((stdcall))
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#endif
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// expected-note@+1 3 {{consider defining 'mismatched' with the 'stdcall' calling convention}}
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void mismatched(int x) {}
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// expected-note@+1 {{consider defining 'mismatched_declaration' with the 'stdcall' calling convention}}
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void mismatched_declaration(int x);
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// expected-note@+1 {{consider defining 'suggest_fix_first_redecl' with the 'stdcall' calling convention}}
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void suggest_fix_first_redecl(int x);
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void suggest_fix_first_redecl(int x);
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typedef void (WINAPI *callback_t)(int);
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void take_callback(callback_t callback);
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void WINAPI mismatched_stdcall(int x) {}
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void take_opaque_fn(void (*callback)(int));
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int main() {
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// expected-warning@+1 {{cast between incompatible calling conventions 'cdecl' and 'stdcall'}}
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take_callback((callback_t)mismatched);
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// expected-warning@+1 {{cast between incompatible calling conventions 'cdecl' and 'stdcall'}}
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callback_t callback = (callback_t)mismatched; // warns
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(void)callback;
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// expected-warning@+1 {{cast between incompatible calling conventions 'cdecl' and 'stdcall'}}
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callback = (callback_t)&mismatched; // warns
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// No warning, just to show we don't drill through other kinds of unary operators.
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callback = (callback_t)!mismatched;
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// expected-warning@+1 {{cast between incompatible calling conventions 'cdecl' and 'stdcall'}}
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callback = (callback_t)&mismatched_before_winapi; // warns
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// Probably a bug, but we don't warn.
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void (*callback2)(int) = mismatched;
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take_callback((callback_t)callback2);
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// Another way to suppress the warning.
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take_callback((callback_t)(void*)mismatched);
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// Warn on declarations as well as definitions.
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// expected-warning@+1 {{cast between incompatible calling conventions 'cdecl' and 'stdcall'}}
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take_callback((callback_t)mismatched_declaration);
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// expected-warning@+1 {{cast between incompatible calling conventions 'cdecl' and 'stdcall'}}
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take_callback((callback_t)suggest_fix_first_redecl);
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// Don't warn, because we're casting from stdcall to cdecl. Usually that means
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// the programmer is rinsing the function pointer through some kind of opaque
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// API.
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take_opaque_fn((void (*)(int))mismatched_stdcall);
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}
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// MSFIXIT: fix-it:"{{.*}}callingconv-cast.c":{16:6-16:6}:"WINAPI "
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// MSFIXIT: fix-it:"{{.*}}callingconv-cast.c":{16:6-16:6}:"WINAPI "
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// MSFIXIT: fix-it:"{{.*}}callingconv-cast.c":{16:6-16:6}:"WINAPI "
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// MSFIXIT: fix-it:"{{.*}}callingconv-cast.c":{7:6-7:6}:"__stdcall "
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// GNUFIXIT: fix-it:"{{.*}}callingconv-cast.c":{16:6-16:6}:"WINAPI "
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// GNUFIXIT: fix-it:"{{.*}}callingconv-cast.c":{16:6-16:6}:"WINAPI "
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// GNUFIXIT: fix-it:"{{.*}}callingconv-cast.c":{16:6-16:6}:"WINAPI "
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// GNUFIXIT: fix-it:"{{.*}}callingconv-cast.c":{7:6-7:6}:"__attribute__((stdcall)) "
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