96 lines · c
1// RUN: %clang_cc1 -fsyntax-only -verify -std=c17 %s2 3#define SA(n, c) int arr##n[(c) ? 1 : -1] = {}4 5const int AA = 5;6 7int f1(enum {AA,BB} E) { // expected-warning {{will not be visible outside of this function}}8 SA(1, AA == 0);9 SA(2, BB == 1);10 return BB;11}12 13int f2(enum {AA=7,BB} E) { // expected-warning {{will not be visible outside of this function}}14 SA(1, AA == 7);15 SA(2, BB == 8);16 return AA;17}18 19struct a {20};21 22int f3(struct a { } *); // expected-warning {{will not be visible outside of this function}}23 24struct A { struct b { int j; } t; }; // expected-note {{previous definition is here}}25 26int f4(struct A { struct b { int j; } t; } *); // expected-warning {{declaration of 'struct A' will not be visible outside of this function}} expected-warning {{redefinition of 'b' will not be visible outside of this function}}27 28struct aA {29 struct ab { // expected-note {{previous definition is here}} expected-note {{previous definition is here}}30 int j;31 } b;32};33 34int f5(struct aA { struct ab { int j; } b; struct ab { char glorx; } glorx; } *); // expected-warning {{declaration of 'struct aA' will not be visible}} expected-warning {{redefinition of 'ab' will not be visible}} expected-warning {{redefinition of 'ab' will not be visible}}35 36void f6(struct z {int b;} c) { // expected-warning {{declaration of 'struct z' will not be visible outside of this function}}37 struct z d;38 d.b = 4;39}40 41void pr19018_1 (enum e19018 { qq } x); // expected-warning{{declaration of 'enum e19018' will not be visible outside of this function}}42enum e19018 qq; //expected-error{{tentative definition has type 'enum e19018' that is never completed}} \43 //expected-note{{forward declaration of 'enum e19018'}}44 45// Only warn once, even if we create two declarations.46void f(struct q *, struct __attribute__((aligned(4))) q *); // expected-warning {{will not be visible outside}}47 48// This enum inside the function pointer parameter shouldn't leak into the49// function.50enum { BB = 0 };51void enum_in_fun_in_fun(void (*fp)(enum { AA, BB } e)) { // expected-warning {{will not be visible}}52 SA(1, AA == 5); // expected-warning{{variable length array folded to constant array as an extension}}53 SA(2, BB == 0);54}55 56void f7(void) {57 extern void ext(struct S { enum E7 { a, b } o; } p); // expected-warning 2 {{will not be visible}}58 ext(a); // expected-error {{use of undeclared identifier}}59}60 61int f8(struct S { enum E8 { a, b } o; } p) { // expected-warning 2 {{will not be visible}}62 struct S o;63 enum E8 x;64 return a + b;65}66// expected-note@+1 {{forward declaration}}67struct S o; // expected-error {{'struct S' that is never completed}}68// expected-note@+1 {{forward declaration}}69enum E8 x = a + b; // expected-error 2 {{undeclared identifier}} expected-error {{incomplete type 'enum E8'}}70 71int f9(struct { enum e { a = 1 } b; } c) { // expected-warning {{will not be visible}}72 return a;73}74 75int f10(76 struct S { // expected-warning {{will not be visible}}77 enum E10 { a, b, c } f; // expected-warning {{will not be visible}}78 } e) {79 return a == b;80}81 82int f11(83 struct S { // expected-warning {{will not be visible}}84 enum E11 { // expected-warning {{will not be visible}}85 a, b, c86 } // expected-warning {{expected ';' at end of declaration list}}87 } // expected-error {{expected member name or ';'}}88 e);89 90void f12(void) {91 extern int ext12(92 struct S12 { } e // expected-warning {{will not be visible}}93 );94 struct S12 o; // expected-error {{incomplete type}} expected-note {{forward declaration}}95}96