llvm-for-llvmta/tools/clang/test/Sema/struct-compat.c

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2022-04-25 13:02:35 +02:00
/* RUN: %clang_cc1 %s -fsyntax-only -pedantic -verify
*/
extern struct {int a;} x; // expected-note {{previous declaration is here}}
extern struct {int a;} x; // expected-error {{redeclaration of 'x'}}
struct x;
int a(struct x* b) {
// Per C99 6.7.2.3, since the outer and inner "struct x"es have different
// scopes, they don't refer to the same type, and are therefore incompatible
struct x {int a;} *c = b; // expected-warning {{incompatible pointer types}}
}
struct x {int a;} r;
int b() {
struct x {char x;} s = r; // expected-error {{initializing 'struct x' with an expression of incompatible type 'struct x'}}
}