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385e7df330
We did not implement C99 6.7.5.3p15 fully in that we missed the rule
for compatible function types where a prior declaration has a prototype
and a subsequent definition (not just declaration) has an empty
identifier list or an identifier list with a mismatch in parameter
arity. This addresses that situation by issuing an error on code like:
void f(int);
void f() {} // type conflicts with previous declaration
(Note: we already diagnose the other type conflict situations
appropriately, this was the only situation we hadn't covered that I
could find.)
38 lines
829 B
C
38 lines
829 B
C
// RUN: %clang_cc1 -fsyntax-only -Wno-strict-prototypes -verify -pedantic %s
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char *funk(int format);
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enum Test {A=-1};
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char *funk(enum Test x);
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int eli(float b); // expected-note {{previous declaration is here}}
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int b(int c) {return 1;}
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int foo();
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int foo() {
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int eli(int (int)); // expected-error {{conflicting types for 'eli'}}
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eli(b);
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return 0;
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}
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int bar();
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int bar(int i) // expected-note {{previous definition is here}}
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{
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return 0;
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}
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int bar() // expected-error {{conflicting types for 'bar'}}
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{
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return 0;
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}
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int foobar(int); // expected-note {{previous declaration is here}}
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int foobar() // expected-error {{conflicting types for 'foobar'}}
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{
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return 0;
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}
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int wibble(); // expected-note {{previous declaration is here}}
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float wibble() // expected-error {{conflicting types for 'wibble'}}
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{
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return 0.0f;
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}
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