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

[pinskia at gcc dot gnu.org via Gcc-bugs]

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

Andrew Pinski  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  ---
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|-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

[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

[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

[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:

[...@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)
[...@gnu-6 rrs]$ 


-- 


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