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[Clang] [Tests] Add some more tests around non-local/non-variable declarations in C for loops #131199

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Mar 14, 2025
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[Clang] [Tests] Add some more tests around non-local/non-variable declarations in C for loops #131199

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16 changes: 9 additions & 7 deletions clang/test/Sema/for.c
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Original file line number Diff line number Diff line change
Expand Up @@ -5,17 +5,19 @@
void b1 (void) { for (void (*f) (void);;); }
void b2 (void) { for (void f (void);;); } /* c11-warning {{non-variable declaration in 'for' loop is a C23 extension}}
c23-warning {{non-variable declaration in 'for' loop is incompatible with C standards before C23}} */
void b3 (void) { for (static int f;;); } /* c11-warning {{declaration of non-local variable in 'for' loop is a C23 extension}}
c23-warning {{declaration of non-local variable in 'for' loop is incompatible with C standards before C23}} */
void b3 (void) { for (static int f;f;); } /* c11-warning {{declaration of non-local variable in 'for' loop is a C23 extension}}
c23-warning {{declaration of non-local variable in 'for' loop is incompatible with C standards before C23}} */

void b4 (void) { for (typedef int f;;); } /* c11-warning {{non-variable declaration in 'for' loop is a C23 extension}}
c23-warning {{non-variable declaration in 'for' loop is incompatible with C standards before C23}} */
void b5 (void) { for (struct { int i; } s;;); }
void b6 (void) { for (enum { zero, ten = 10 } i;;); }
void b5 (void) { for (struct { int i; } s;s.i;); }
void b6 (void) { for (enum { zero, ten = 10 } i = ten;i;); }
void b7 (void) { for (struct s { int i; };;); } /* c11-warning {{non-variable declaration in 'for' loop is a C23 extension}}
c23-warning {{non-variable declaration in 'for' loop is incompatible with C standards before C23}} */
void b8 (void) { for (static struct { int i; } s;;); } /* c11-warning {{declaration of non-local variable in 'for' loop is a C23 extension}}
c23-warning {{declaration of non-local variable in 'for' loop is incompatible with C standards before C23}} */
void b9 (void) { for (struct { int i; } (*s)(struct { int j; } o) = 0;;); }
void b8 (void) { for (static struct { int i; } s;s.i;); } /* c11-warning {{declaration of non-local variable in 'for' loop is a C23 extension}}
c23-warning {{declaration of non-local variable in 'for' loop is incompatible with C standards before C23}} */
void b9 (void) { for (struct { int i; } (*s)(struct { int j; } o) = 0;s;); }
void b10(void) { for (typedef struct { int i; } (*s)(struct { int j; });;); } /* c11-warning {{non-variable declaration in 'for' loop is a C23 extension}}
c23-warning {{non-variable declaration in 'for' loop is incompatible with C standards before C23}} */
void b11 (void) { for (static _Thread_local struct { int i; } s;s.i;); } /* c11-warning {{declaration of non-local variable in 'for' loop is a C23 extension}}
c23-warning {{declaration of non-local variable in 'for' loop is incompatible with C standards before C23}} */