[Bug c++/31158] New: wrong line number in warning: overflow in implicit constant conversion

[Bug c++/31158] New: wrong line number in warning: overflow in implicit constant conversion

[sebor at roguewave dot com]

The line number in the warning below points to the closing brace of the
initializer expression making it difficult to find the offending line if the
initializer is many lines long. I would like to suggest that the line number be
that of the problem line (and perhaps include the column number as well, if
possible, when there is more than one initializer per line).

$ cat t.cpp && g++ -Wall t.cpp
/*   1 */ int main ()
/*   2 */ {
/*   3 */     const struct { short i; } a[] = {
/*   4 */         { 65535U },
/*   5 */         { 65536U }
/*   6 */     };
/*   7 */     (void)&a;
/*   8 */ }
/*   9 */ 
t.cpp: In function 'int main()':
t.cpp:6: warning: overflow in implicit constant conversion


-- 
           Summary: wrong line number in warning: overflow in implicit
                    constant conversion
           Product: gcc
           Version: 4.1.0
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: c++
        AssignedTo: unassigned at gcc dot gnu dot org
        ReportedBy: sebor at roguewave dot com


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=31158

[Bug c++/31158] wrong line number in warning: overflow in implicit constant conversion

[rguenth at gcc dot gnu dot org]

-- 

rguenth at gcc dot gnu dot org changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
           Severity|normal                      |enhancement
           Keywords|                            |diagnostic


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=31158

[Bug c++/31158] wrong line number in warning: overflow in implicit constant conversion

[pinskia at gcc dot gnu dot org]

------- Comment #1 from pinskia at gcc dot gnu dot org  2007-07-06 00:47 -------
The issue is the conversion is done at the end of parsing the whole statement.


-- 


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=31158

[Bug c++/31158] wrong line number in warning: overflow in implicit constant conversion

[manu at gcc dot gnu dot org]

------- Comment #2 from manu at gcc dot gnu dot org  2010-02-20 18:35 -------
This is confirmed in C and C++. The front-ends need location information
everywhere. Any help is appreciated.


-- 

manu at gcc dot gnu dot org changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |manu at gcc dot gnu dot org
             Status|UNCONFIRMED                 |NEW
     Ever Confirmed|0                           |1
   Last reconfirmed|0000-00-00 00:00:00         |2010-02-20 18:35:53
               date|                            |


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=31158