Viewing file:  Wvla-parameter-7.c (1.55 KB) -rw-r--r--
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/* PR middle-end/97189 - ICE on redeclaration of a function with VLA argument
and attribute access
{ dg-do compile }
{ dg-options "-Wall" } */
#define RW(...) __attribute__ ((access (read_write, __VA_ARGS__)))
RW (2, 3) void f1 (int n, int[n], int);
/* { dg-warning "attribute 'access \\(read_write, 2, 3\\)' positional argument 2 conflicts with previous designation by argument 3" "warning" { target *-*-* } .-1 }
{ dg-message "designating the bound of variable length array argument 2" "note" { target *-*-* } .-2 } */
void call_f1 (int *p)
{
/* Verify that a warning is issued. Ideally, it seems the VLA bound
should take precedence over the attribute and the warning would
reference argument 1 but since the conflict in the redeclarations
of the function is already diagnosed don't test that (and let it
be acceptable for this warning to reference argument 3). */
f1 (-1, p, -1);
// { dg-warning "argument \\d value -1 is negative" "warning" { target *-*-* } .-1 }
}
RW (2) void f2 (int, int[*], int);
// { dg-message "previously declared as a variable length array 'int\\\[\\\*]'" "note" { target *-*-* } .-1 }
RW (2, 3) void f2 (int, int[], int);
// { dg-warning "argument 2 of type 'int\\\[]' declared as an ordinary array" "warning" { target *-*-* } .-1 }
void call_f2 (int *p)
{
f2 (-1, p, 0);
/* Verify that the attribute access on the redeclaration of f2() takes
precedence over the one on the first declaration. */
f2 (0, p, -1);
// { dg-warning "argument 3 value -1 is negative" "warning" { target *-*-* } .-1 }
}
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