1 /* PR middle-end/97189 - ICE on redeclaration of a function with VLA argument
2 and attribute access
3 { dg-do compile }
4 { dg-options "-Wall" } */
5
6 #define RW(...) __attribute__ ((access (read_write, __VA_ARGS__)))
7
8 RW (2, 3) void f1 (int n, int[n], int);
9 /* { dg-warning "attribute 'access \\(read_write, 2, 3\\)' positional argument 2 conflicts with previous designation by argument 3" "warning" { target *-*-* } .-1 }
10 { dg-message "designating the bound of variable length array argument 2" "note" { target *-*-* } .-2 } */
11
call_f1(int * p)12 void call_f1 (int *p)
13 {
14 /* Verify that a warning is issued. Ideally, it seems the VLA bound
15 should take precedence over the attribute and the warning would
16 reference argument 1 but since the conflict in the redeclarations
17 of the function is already diagnosed don't test that (and let it
18 be acceptable for this warning to reference argument 3). */
19 f1 (-1, p, -1);
20 // { dg-warning "argument \\d value -1 is negative" "warning" { target *-*-* } .-1 }
21 }
22
23 RW (2) void f2 (int, int[*], int);
24 // { dg-message "previously declared as a variable length array 'int\\\[\\\*]'" "note" { target *-*-* } .-1 }
25 RW (2, 3) void f2 (int, int[], int);
26 // { dg-warning "argument 2 of type 'int\\\[]' declared as an ordinary array" "warning" { target *-*-* } .-1 }
27
call_f2(int * p)28 void call_f2 (int *p)
29 {
30 f2 (-1, p, 0);
31
32 /* Verify that the attribute access on the redeclaration of f2() takes
33 precedence over the one on the first declaration. */
34 f2 (0, p, -1);
35 // { dg-warning "argument 3 value -1 is negative" "warning" { target *-*-* } .-1 }
36 }
37