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// RUN: %clang_cc1 %s -std=c2x -Wall -pedantic -fsyntax-only -verify=good
// RUN: %clang_cc1 %s -std=c2x -Wpre-c2x-compat -fsyntax-only -verify=c2x
// RUN: %clang_cc1 %s -std=c2x -Wpre-c2x-compat -Wno-gnu-empty-initializer -fsyntax-only -verify=c2x
// RUN: %clang_cc1 %s -std=c2x -Wgnu-empty-initializer -fsyntax-only -verify=good
// RUN: %clang_cc1 %s -std=c17 -Wall -pedantic -fsyntax-only -verify=c2x-ext
// RUN: %clang_cc1 %s -std=c17 -Wgnu-empty-initializer -fsyntax-only -verify=good
// RUN: %clang_cc1 %s -std=c17 -Wc2x-extensions -fsyntax-only -verify=c2x-ext
// RUN: %clang_cc1 %s -std=c17 -Wpre-c2x-compat -fsyntax-only -verify=good
// good-no-diagnostics
// Empty brace initialization used to be a GNU extension, but the feature was
// added to C2x. We now treat empty initialization as a C extension rather than
// a GNU extension. Thus, -Wgnu-empty-initializer is always silently ignored.
struct S {
int a;
};
struct S s = {}; /* c2x-warning {{use of an empty initializer is incompatible with C standards before C2x}}
c2x-ext-warning {{use of an empty initializer is a C2x extension}}
*/
void func(void) {
struct S s2 = {}; /* c2x-warning {{use of an empty initializer is incompatible with C standards before C2x}}
c2x-ext-warning {{use of an empty initializer is a C2x extension}}
*/
(void)s2;
}
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