[Bug c/56724] New: sub-optimal location in error

[tromey at gcc dot gnu.org]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=56724

             Bug #: 56724
           Summary: sub-optimal location in error
    Classification: Unclassified
           Product: gcc
           Version: unknown
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: c
        AssignedTo: unassig...@gcc.gnu.org
        ReportedBy: tro...@gcc.gnu.org


Consider this source:

int f (int *);

int callf (int, int, int (*)(double *));

int docall(void)
{
  return callf (23, 72,
        f);
}


Compiling this, I get:

t.c: In function ‘docall’:
t.c:8:3: warning: passing argument 3 of ‘callf’ from incompatible pointer type
[enabled by default]
   f);
   ^
t.c:3:5: note: expected ‘int (*)(double *)’ but argument is of type ‘int
(*)(int *)’
 int callf (int, int, int (*)(double *));
     ^


I think the location "3:5" is not ideal.
It would be better, at least IMO, if it pointed to the particular
parameter in the declaration.
If you have many parameters, it can be hard to find the right one.