https://gcc.gnu.org/bugzilla/show_bug.cgi?id=101125
Eric Gallager <egallager at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
CC| |egallager at gcc dot gnu.org
Blocks| |87403
--- Comment #3 from Eric Gallager <egallager at gcc dot gnu.org> ---
I modified the testcase a bit to include the suggested fix as its own line:
$ cat 101125.c
struct s { int a, b; };
void f (int);
#define F(X) f(X)
void g (void)
{
f ((struct s){0,1}.a); /* dg-warning "" */
F ((struct s){0,1}.a); /* dg-error "passed 2 arguments, but takes just 1" */
F (((struct s){0,1}.a)); /* dg-bogus "passed 2 arguments, but takes just 1"
*/
}
$
I get the following diagnostics from it:
$ /usr/local/bin/gcc -c -Wall -Wextra -Wtraditional -pedantic -Wc++-compat
101125.c
101125.c: In function 'g':
101125.c:4:6: warning: traditional C rejects ISO C style function definitions
[-Wtraditional]
4 | void g (void)
| ^
101125.c:6:14: warning: traditional C rejects automatic aggregate
initialization [-Wtraditional]
6 | f ((struct s){0,1}.a); /* dg-warning "" */
| ^
101125.c:7:23: error: macro "F" passed 2 arguments, but takes just 1
7 | F ((struct s){0,1}.a); /* dg-error "passed 2 arguments, but takes
just 1" */
| ^
101125.c:3:9: note: macro "F" defined here
3 | #define F(X) f(X)
| ^
101125.c:7:23: warning: function-like macro "F" must be used with arguments in
traditional C [-Wtraditional]
7 | F ((struct s){0,1}.a); /* dg-error "passed 2 arguments, but takes
just 1" */
| ^
101125.c:7:3: error: 'F' undeclared (first use in this function)
7 | F ((struct s){0,1}.a); /* dg-error "passed 2 arguments, but takes
just 1" */
| ^
101125.c:7:3: note: each undeclared identifier is reported only once for each
function it appears in
101125.c:8:15: warning: traditional C rejects automatic aggregate
initialization [-Wtraditional]
8 | F (((struct s){0,1}.a)); /* dg-bogus "passed 2 arguments, but takes
just 1" */
| ^
101125.c:3:16: note: in definition of macro 'F'
3 | #define F(X) f(X)
| ^
$
Referenced Bugs:
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=87403
[Bug 87403] [Meta-bug] Issues that suggest a new warning
