1d51bb824f
If the declaration of an identifier has block scope, and the identifier has external or internal linkage, the declaration shall have no initializer for the identifier. Clang now gives a more suitable diagnosis for this case. Fixes https://github.com/llvm/llvm-project/issues/57478 Signed-off-by: Jun Zhang <jun@junz.org> Differential Revision: https://reviews.llvm.org/D133088
86 lines
2.3 KiB
C
86 lines
2.3 KiB
C
// RUN: %clang_cc1 -verify -fsyntax-only -Wno-private-extern %s
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// RUN: %clang_cc1 -verify -fsyntax-only -Wno-private-extern -fmodules %s
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static int g0; // expected-note{{previous definition}}
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int g0; // expected-error{{non-static declaration of 'g0' follows static declaration}}
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static int g1;
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extern int g1;
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static int g2;
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__private_extern__ int g2;
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int g3; // expected-note{{previous definition}}
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static int g3; // expected-error{{static declaration of 'g3' follows non-static declaration}}
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extern int g4; // expected-note{{previous declaration}}
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static int g4; // expected-error{{static declaration of 'g4' follows non-static declaration}}
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__private_extern__ int g5; // expected-note{{previous declaration}}
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static int g5; // expected-error{{static declaration of 'g5' follows non-static declaration}}
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void f0(void) {
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int g6; // expected-note {{previous}}
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extern int g6; // expected-error {{extern declaration of 'g6' follows non-extern declaration}}
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}
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void f1(void) {
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int g7; // expected-note {{previous}}
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__private_extern__ int g7; // expected-error {{extern declaration of 'g7' follows non-extern declaration}}
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}
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void f2(void) {
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extern int g8; // expected-note{{previous declaration}}
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int g8; // expected-error {{non-extern declaration of 'g8' follows extern declaration}}
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}
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void f3(void) {
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__private_extern__ int g9; // expected-note{{previous declaration}}
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int g9; // expected-error {{non-extern declaration of 'g9' follows extern declaration}}
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}
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void f4(void) {
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extern int g10;
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extern int g10;
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}
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void f5(void) {
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__private_extern__ int g11;
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__private_extern__ int g11;
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}
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void f6(void) {
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// FIXME: Diagnose
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extern int g12;
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__private_extern__ int g12;
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}
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void f7(void) {
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// FIXME: Diagnose
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__private_extern__ int g13;
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extern int g13;
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}
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struct s0;
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void f8(void) {
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extern struct s0 g14;
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__private_extern__ struct s0 g14;
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}
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struct s0 { int x; };
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void f9(void) {
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extern int g15 = 0; // expected-error{{declaration of block scope identifier with linkage cannot have an initializer}}
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// FIXME: linkage specifier in warning.
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__private_extern__ int g16 = 0; // expected-error{{declaration of block scope identifier with linkage cannot have an initializer}}
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}
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extern int g17;
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int g17 = 0;
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extern int g18 = 0; // expected-warning{{'extern' variable has an initializer}}
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__private_extern__ int g19;
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int g19 = 0;
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__private_extern__ int g20 = 0;
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