154 lines
5.6 KiB
C++
154 lines
5.6 KiB
C++
// RUN: %clang_cc1 -fsyntax-only -verify -std=c++11 -Wimplicit-fallthrough -DCLANG_PREFIX -DCOMMAND_LINE_FALLTHROUGH=[[clang::fallthrough]] -DUNCHOSEN=[[fallthrough]] %s
|
|
// RUN: %clang_cc1 -fsyntax-only -verify -std=c++11 -Wimplicit-fallthrough -DCOMMAND_LINE_FALLTHROUGH=[[fallthrough]] %s
|
|
// RUN: %clang_cc1 -fsyntax-only -verify -std=c++1z -Wimplicit-fallthrough -DCLANG_PREFIX -DCOMMAND_LINE_FALLTHROUGH=[[clang::fallthrough]] %s
|
|
// RUN: %clang_cc1 -fsyntax-only -verify -std=c++1z -Wimplicit-fallthrough -DCOMMAND_LINE_FALLTHROUGH=[[clang::fallthrough]] %s
|
|
// RUN: %clang_cc1 -fsyntax-only -verify -std=c++1z -Wimplicit-fallthrough -DCOMMAND_LINE_FALLTHROUGH=[[fallthrough]] -DUNCHOSEN=[[clang::fallthrough]] %s
|
|
|
|
int fallthrough_compatibility_macro_from_command_line(int n) {
|
|
switch (n) {
|
|
case 0:
|
|
n = n * 10;
|
|
case 1: // expected-warning{{unannotated fall-through between switch labels}} expected-note{{insert 'COMMAND_LINE_FALLTHROUGH;' to silence this warning}} expected-note{{insert 'break;' to avoid fall-through}}
|
|
;
|
|
}
|
|
return n;
|
|
}
|
|
|
|
#ifdef CLANG_PREFIX
|
|
#define COMPATIBILITY_FALLTHROUGH [ [ /* test */ clang /* test */ \
|
|
:: fallthrough ] ] // testing whitespace and comments in macro definition
|
|
#else
|
|
#define COMPATIBILITY_FALLTHROUGH [ [ /* test */ /* test */ \
|
|
fallthrough ] ] // testing whitespace and comments in macro definition
|
|
#endif
|
|
|
|
int fallthrough_compatibility_macro_from_source(int n) {
|
|
switch (n) {
|
|
case 0:
|
|
n = n * 20;
|
|
case 1: // expected-warning{{unannotated fall-through between switch labels}} expected-note{{insert 'COMPATIBILITY_FALLTHROUGH;' to silence this warning}} expected-note{{insert 'break;' to avoid fall-through}}
|
|
;
|
|
}
|
|
return n;
|
|
}
|
|
|
|
// Deeper macro substitution
|
|
#ifdef CLANG_PREFIX
|
|
#define M1 [[clang::fallthrough]]
|
|
#else
|
|
#define M1 [[fallthrough]]
|
|
#endif
|
|
#ifdef __clang__
|
|
#define M2 M1
|
|
#else
|
|
#define M2
|
|
#endif
|
|
|
|
#define WRONG_MACRO1 clang::fallthrough
|
|
#define WRONG_MACRO2 [[clang::fallthrough]
|
|
#define WRONG_MACRO3 [[clang::fall through]]
|
|
#define WRONG_MACRO4 [[clang::fallthrough]]]
|
|
|
|
int fallthrough_compatibility_macro_in_macro(int n) {
|
|
switch (n) {
|
|
case 0:
|
|
n = n * 20;
|
|
case 1: // expected-warning{{unannotated fall-through between switch labels}} expected-note{{insert 'M1;' to silence this warning}} expected-note{{insert 'break;' to avoid fall-through}}
|
|
// there was an idea that this ^ should be M2
|
|
;
|
|
}
|
|
return n;
|
|
}
|
|
|
|
#undef M1
|
|
#undef M2
|
|
#undef COMPATIBILITY_FALLTHROUGH
|
|
#undef COMMAND_LINE_FALLTHROUGH
|
|
#undef UNCHOSEN
|
|
|
|
int fallthrough_compatibility_macro_undefined(int n) {
|
|
switch (n) {
|
|
case 0:
|
|
n = n * 20;
|
|
#if __cplusplus <= 201402L
|
|
case 1: // expected-warning{{unannotated fall-through between switch labels}} expected-note{{insert '[[clang::fallthrough]];' to silence this warning}} expected-note{{insert 'break;' to avoid fall-through}}
|
|
#else
|
|
case 1: // expected-warning{{unannotated fall-through between switch labels}} expected-note{{insert '[[fallthrough]];' to silence this warning}} expected-note{{insert 'break;' to avoid fall-through}}
|
|
#endif
|
|
;
|
|
}
|
|
#define TOO_LATE [[clang::fallthrough]]
|
|
return n;
|
|
}
|
|
#undef TOO_LATE
|
|
|
|
#define MACRO_WITH_HISTORY 11111111
|
|
#undef MACRO_WITH_HISTORY
|
|
#define MACRO_WITH_HISTORY [[clang::fallthrough]]
|
|
#undef MACRO_WITH_HISTORY
|
|
#define MACRO_WITH_HISTORY 2222222
|
|
|
|
int fallthrough_compatibility_macro_history(int n) {
|
|
switch (n) {
|
|
case 0:
|
|
n = n * 20;
|
|
#undef MACRO_WITH_HISTORY
|
|
#if __cplusplus <= 201402L
|
|
case 1: // expected-warning{{unannotated fall-through between switch labels}} expected-note{{insert '[[clang::fallthrough]];' to silence this warning}} expected-note{{insert 'break;' to avoid fall-through}}
|
|
#else
|
|
case 1: // expected-warning{{unannotated fall-through between switch labels}} expected-note{{insert '[[fallthrough]];' to silence this warning}} expected-note{{insert 'break;' to avoid fall-through}}
|
|
#endif
|
|
;
|
|
#define MACRO_WITH_HISTORY [[clang::fallthrough]]
|
|
}
|
|
return n;
|
|
}
|
|
|
|
#undef MACRO_WITH_HISTORY
|
|
#define MACRO_WITH_HISTORY 11111111
|
|
#undef MACRO_WITH_HISTORY
|
|
#define MACRO_WITH_HISTORY [[clang::fallthrough]]
|
|
#undef MACRO_WITH_HISTORY
|
|
#define MACRO_WITH_HISTORY 2222222
|
|
#undef MACRO_WITH_HISTORY
|
|
|
|
int fallthrough_compatibility_macro_history2(int n) {
|
|
switch (n) {
|
|
case 0:
|
|
n = n * 20;
|
|
#define MACRO_WITH_HISTORY [[clang::fallthrough]]
|
|
case 1: // expected-warning{{unannotated fall-through between switch labels}} expected-note{{insert 'MACRO_WITH_HISTORY;' to silence this warning}} expected-note{{insert 'break;' to avoid fall-through}}
|
|
;
|
|
#undef MACRO_WITH_HISTORY
|
|
#define MACRO_WITH_HISTORY 3333333
|
|
#undef MACRO_WITH_HISTORY
|
|
#define MACRO_WITH_HISTORY 4444444
|
|
#undef MACRO_WITH_HISTORY
|
|
#define MACRO_WITH_HISTORY 5555555
|
|
}
|
|
return n;
|
|
}
|
|
|
|
template<const int N>
|
|
int fallthrough_compatibility_macro_history_template(int n) {
|
|
switch (N * n) {
|
|
case 0:
|
|
n = n * 20;
|
|
#define MACRO_WITH_HISTORY2 [[clang::fallthrough]]
|
|
case 1: // expected-warning{{unannotated fall-through between switch labels}} expected-note{{insert 'MACRO_WITH_HISTORY2;' to silence this warning}} expected-note{{insert 'break;' to avoid fall-through}}
|
|
;
|
|
#undef MACRO_WITH_HISTORY2
|
|
#define MACRO_WITH_HISTORY2 3333333
|
|
}
|
|
return n;
|
|
}
|
|
|
|
#undef MACRO_WITH_HISTORY2
|
|
#define MACRO_WITH_HISTORY2 4444444
|
|
#undef MACRO_WITH_HISTORY2
|
|
#define MACRO_WITH_HISTORY2 5555555
|
|
|
|
void f() {
|
|
fallthrough_compatibility_macro_history_template<1>(0); // expected-note{{in instantiation of function template specialization 'fallthrough_compatibility_macro_history_template<1>' requested here}}
|
|
}
|