51 lines · c
1// RUN: %clang_cc1 %s -std=c90 -verify -fsyntax-only2void t0(int x) {3 int explicit_decl(void);4 int (*p)(void);5 if(x > 0)6 x = g() + 1; // expected-note {{previous implicit declaration}}7 p = g;8 if(x < 0) {9 extern void u(int (*)[h()]);10 int (*q)(void) = h;11 }12 p = h; /* expected-error {{use of undeclared identifier 'h'}} */13}14 15void t1(int x) {16 int (*p)(void);17 switch (x) {18 g();19 case 0:20 x = h() + 1;21 break;22 case 1:23 p = g;24 p = h;25 break;26 }27 p = g; /* expected-error {{use of undeclared identifier 'g'}} */28 p = h; /* expected-error {{use of undeclared identifier 'h'}} */29 explicit_decl();30 p = explicit_decl;31}32 33int t2(int x) {34 int y = ({ if (x > 0) x = g() + 1; 2*x; });35 int (*p)(void) = g; /* expected-error {{use of undeclared identifier 'g'}} */36 return y;37}38 39int PR34822(void) {40 {int i = sizeof(PR34822_foo());} /* expected-note {{previous definition is here}} */41 {extern int PR34822_foo;} /* expected-error {{redefinition of 'PR34822_foo' as different kind of symbol}} */42 43 {extern int PR34822_bar;} /* expected-note {{previous declaration is here}} */44 {int i = sizeof(PR34822_bar());} /* expected-warning {{use of out-of-scope declaration of 'PR34822_bar' whose type is not compatible with that of an implicit declaration}} expected-error {{called object type 'int' is not a function or function pointer}} */45}46 47int (*p)(void) = g; /* expected-error {{use of undeclared identifier 'g'}} */48int (*q)(void) = h; /* expected-error {{use of undeclared identifier 'h'}} */49 50float g(void); /* expected-error {{conflicting types for 'g'}} */51