2cb2cd242c
C89 allowed a type specifier to be elided with the resulting type being int, aka implicit int behavior. This feature was subsequently removed in C99 without a deprecation period, so implementations continued to support the feature. Now, as with implicit function declarations, is a good time to reevaluate the need for this support. This patch allows -Wimplicit-int to issue warnings in C89 mode (off by default), defaults the warning to an error in C99 through C17, and disables support for the feature entirely in C2x. It also removes a warning about missing declaration specifiers that really was just an implicit int warning in disguise and other minor related cleanups.
51 lines
1.4 KiB
C
51 lines
1.4 KiB
C
// RUN: %clang_cc1 %s -fsyntax-only -Wno-strict-prototypes -verify
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void test(void) {
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char = 4; // expected-error {{expected identifier}}
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}
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// PR2400
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typedef xtype (*x)(void* handle); // expected-error {{function cannot return function type}} expected-error 2{{type specifier missing, defaults to 'int'}}
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typedef void ytype();
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typedef struct _zend_module_entry zend_module_entry;
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struct _zend_module_entry {
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ytype globals_size; // expected-error {{field 'globals_size' declared as a function}}
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};
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zend_module_entry openssl_module_entry = {
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sizeof(zend_module_entry)
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};
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// <rdar://problem/11067144>
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typedef int (FunctionType)(int *value);
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typedef struct {
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UndefinedType undef; // expected-error {{unknown type name 'UndefinedType'}}
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FunctionType fun; // expected-error {{field 'fun' declared as a function}}
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} StructType;
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void f(StructType *buf) {
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buf->fun = 0;
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}
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// rdar://11743706
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static void bar(hid_t, char); // expected-error {{expected identifier}}
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static void bar(hid_t p, char); // expected-error {{unknown type name 'hid_t'}}
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void foo(void) {
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(void)bar;
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}
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void test2();
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void test2(undef); // expected-error {{a parameter list without types is only allowed in a function definition}}
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void test2() { }
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void test3();
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void test3; // expected-error {{incomplete type}}
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void test3() { }
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void ellipsis1(...); // expected-error {{ISO C requires a named parameter before '...'}}
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