[Bug middle-end/42543] ICE when using va_arg

[Bug middle-end/42543] ICE when using va_arg

[pinskia at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=42543

Andrew Pinski <pinskia at gcc dot gnu.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
      Known to work|                            |4.6.4, 4.7.1
             Status|NEW                         |RESOLVED
   Target Milestone|---                         |4.6.0
      Known to fail|                            |4.5.3
         Resolution|---                         |FIXED

--- Comment #6 from Andrew Pinski <pinskia at gcc dot gnu.org> ---
Fixed in GCC 4.6.0, there was many var_arg changes in GCC 4.6.0 that would have
fixed this.

[Bug middle-end/42543] ICE when using va_arg

[rguenth at gcc dot gnu dot org]

-- 

rguenth at gcc dot gnu dot org changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|UNCONFIRMED                 |NEW
     Ever Confirmed|0                           |1
           Keywords|ice-on-valid-code           |ice-on-invalid-code
   Last reconfirmed|0000-00-00 00:00:00         |2009-12-31 16:52:54
               date|                            |


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=42543

[Bug middle-end/42543] ICE when using va_arg

[hjl dot tools at gmail dot com]

------- Comment #5 from hjl dot tools at gmail dot com  2009-12-29 17:33 -------
Icc 11.1 generates:

[hjl@gnu-6 rrs]$ /opt/intel/Compiler/11.1/059/bin/intel64/icc -S pr42543.c
pr42543.c(55): error: cast to type "va_list" is not allowed
              while (index-- > 0 && (arg=va_arg((va_list)args2,char*)) != NULL)
;
                                         ^

compilation aborted for pr42543.c (code 2)
[hjl@gnu-6 rrs]$ 


-- 


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=42543

[Bug middle-end/42543] ICE when using va_arg

[hjl dot tools at gmail dot com]

------- Comment #4 from hjl dot tools at gmail dot com  2009-12-29 17:32 -------
I am not sure if

---
char* FormatStringEx (char str[], size_t max_length, char templ[],
   void* args, unsigned int flags)

{
...
void           *args2;
char           *arg,c;
...
while (index-- > 0 && (arg=va_arg((va_list)args2,char*)) != NULL) ;
...
---

is valid C. But gcc could do better to recover.


-- 


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=42543

[Bug middle-end/42543] ICE when using va_arg

[pinskia at gcc dot gnu dot org]

------- Comment #3 from pinskia at gcc dot gnu dot org  2009-12-29 17:17 -------
The trunk still ICEs:
gimplification failed:
(char *) args2.4 <nop_expr 0x43600ab8
t.c:56:40: internal compiler error: gimplification failed
Please submit a full bug report,

That is an ICE with i686-darwin.  But I think it will also ICE on GNU/Linux
too.


-- 

pinskia at gcc dot gnu dot org changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |pinskia at gcc dot gnu dot
                   |                            |org
           Severity|minor                       |normal
          Component|c                           |middle-end
   GCC host triplet|Windows 7                   |
 GCC target triplet|                            |i?86-*-*
           Keywords|                            |ice-on-valid-code
            Summary|internal compiler error: in |ICE when using va_arg
                   |gimplify_expr, at           |
                   |gimplify.c:7098             |


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=42543