| 1 | // RUN: %clang_cc1 %s -std=c90 -verify -fsyntax-only |
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| 2 | void t0(int x) { |
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| 3 | int explicit_decl(); |
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| 4 | int (*p)(); |
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| 5 | if(x > 0) |
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| 6 | x = g() + 1; // expected-note {{previous implicit declaration}} |
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| 7 | p = g; |
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| 8 | if(x < 0) { |
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| 9 | extern void u(int (*)[h()]); |
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| 10 | int (*q)() = h; |
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| 11 | } |
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| 12 | p = h; /* expected-error {{use of undeclared identifier 'h'}} */ |
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| 13 | } |
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| 14 | |
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| 15 | void t1(int x) { |
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| 16 | int (*p)(); |
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| 17 | switch (x) { |
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| 18 | g(); |
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| 19 | case 0: |
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| 20 | x = h() + 1; |
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| 21 | break; |
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| 22 | case 1: |
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| 23 | p = g; |
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| 24 | p = h; |
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| 25 | break; |
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| 26 | } |
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| 27 | p = g; /* expected-error {{use of undeclared identifier 'g'}} */ |
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| 28 | p = h; /* expected-error {{use of undeclared identifier 'h'}} */ |
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| 29 | explicit_decl(); |
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| 30 | p = explicit_decl; |
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| 31 | } |
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| 32 | |
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| 33 | int t2(int x) { |
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| 34 | int y = ({ if (x > 0) x = g() + 1; 2*x; }); |
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| 35 | int (*p)() = g; /* expected-error {{use of undeclared identifier 'g'}} */ |
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| 36 | return y; |
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| 37 | } |
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| 38 | |
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| 39 | int PR34822() { |
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| 40 | {int i = sizeof(PR34822_foo());} /* expected-note {{previous definition is here}} */ |
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| 41 | {extern int PR34822_foo;} /* expected-error {{redefinition of 'PR34822_foo' as different kind of symbol}} */ |
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| 42 | |
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| 43 | {extern int PR34822_bar;} /* expected-note {{previous declaration is here}} */ |
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| 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}} */ |
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| 45 | } |
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| 46 | |
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| 47 | int (*p)() = g; /* expected-error {{use of undeclared identifier 'g'}} */ |
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| 48 | int (*q)() = h; /* expected-error {{use of undeclared identifier 'h'}} */ |
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| 49 | |
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| 50 | float g(); /* expected-error {{conflicting types for 'g'}} */ |
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| 51 | |
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