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* [Bug middle-end/39801]  New: Builtins are assumed not to throw exceptions, even with -fnon-call-exceptions
@ 2009-04-17 20:50 mmitchel at gcc dot gnu dot org
  2009-04-21 17:47 ` [Bug middle-end/39801] " pinskia at gcc dot gnu dot org
  0 siblings, 1 reply; 2+ messages in thread
From: mmitchel at gcc dot gnu dot org @ 2009-04-17 20:50 UTC (permalink / raw)
  To: gcc-bugs

Some builtin functions are marked as not throwing exceptions, even when
-fnon-call-exceptions is in use.  As a result, the compiler will assume these
functions will not throw exceptions -- but they might.  For example, the buitin
va_arg might cause a SEGV, which would become an exception, if the pointer
provided was invalid.  Even builtins which call external library routines might
do so, if the routines have themselves been compiled with
-fnon-call-exceptions.

For more background, see:

http://gcc.gnu.org/ml/gcc-patches/2009-04/msg00920.html

and follow-ups thereto.


-- 
           Summary: Builtins are assumed not to throw exceptions, even with
                    -fnon-call-exceptions
           Product: gcc
           Version: 4.5.0
            Status: UNCONFIRMED
          Keywords: wrong-code
          Severity: normal
          Priority: P3
         Component: middle-end
        AssignedTo: unassigned at gcc dot gnu dot org
        ReportedBy: mmitchel at gcc dot gnu dot org


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=39801


^ permalink raw reply	[flat|nested] 2+ messages in thread
* [Bug middle-end/39801] Builtins are assumed not to throw exceptions, even with -fnon-call-exceptions
  2009-04-17 20:50 [Bug middle-end/39801] New: Builtins are assumed not to throw exceptions, even with -fnon-call-exceptions mmitchel at gcc dot gnu dot org
@ 2009-04-21 17:47 ` pinskia at gcc dot gnu dot org
  0 siblings, 0 replies; 2+ messages in thread
From: pinskia at gcc dot gnu dot org @ 2009-04-21 17:47 UTC (permalink / raw)
  To: gcc-bugs



------- Comment #1 from pinskia at gcc dot gnu dot org  2009-04-21 17:47 -------
Confirmed.


-- 

pinskia at gcc dot gnu dot org changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|UNCONFIRMED                 |NEW
     Ever Confirmed|0                           |1
   Last reconfirmed|0000-00-00 00:00:00         |2009-04-21 17:47:29
               date|                            |


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=39801


^ permalink raw reply	[flat|nested] 2+ messages in thread
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2009-04-17 20:50 [Bug middle-end/39801] New: Builtins are assumed not to throw exceptions, even with -fnon-call-exceptions mmitchel at gcc dot gnu dot org
2009-04-21 17:47 ` [Bug middle-end/39801] " pinskia at gcc dot gnu dot org

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