[Bug optimization/11121] New: function prototypes, function pointers and -O3

[Bug optimization/11121] New: function prototypes, function pointers and -O3

[gwaidzai@yahoo.com.hk]

PLEASE REPLY TO gcc-bugzilla@gcc.gnu.org ONLY, *NOT* gcc-bugs@gcc.gnu.org.

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=11121

           Summary: function prototypes, function pointers and -O3
           Product: gcc
           Version: 3.4
            Status: UNCONFIRMED
          Severity: normal
          Priority: P2
         Component: optimization
        AssignedTo: unassigned@gcc.gnu.org
        ReportedBy: gwaidzai@yahoo.com.hk
                CC: gcc-bugs@gcc.gnu.org
 GCC build triplet: i686-pc-linux-gnu
  GCC host triplet: i686-pc-linux-gnu
GCC target triplet: i686-pc-linux-gnu

The program below will cause an internal compiler error when compiled with gcc 
3.4:

Reading specs from /home/root/tools/usr/lib/gcc-lib/i686-pc-linux-gnu/3.4/specs
Configured with: ../gcc-work/configure --prefix=/home/root/tools/usr 
--with-sysroot=/home/root/tools 
--with-ld=/home/root/tools/usr/i686-pc-linux-gnu/bin/ld 
--with-as=/home/root/tools/usr/i686-pc-linux-gnu-as --disable-nls 
--enable-shared --with-clocale=gnu --enable-languages=c,c++ 
--enable-threads=posix --enable-__thread --enable-__cxa_atexit
Thread model: posix
gcc version 3.4 20030531 (experimental)

with the -O3 flag.
(this gcc is compiled against glibc cvs as of 20030531)

This is the program:
---------------
int fn2 (void);

int fn1 (int (* const fn) (void)) {return fn ();}

int main (void) {return fn1 (fn2);}

int fn2 (void) {return 0;}
---------------

Thanks

[Bug optimization/11121] function prototypes, function pointers and -O3

[gwaidzai@yahoo.com.hk]

PLEASE REPLY TO gcc-bugzilla@gcc.gnu.org ONLY, *NOT* gcc-bugs@gcc.gnu.org.

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=11121



------- Additional Comments From gwaidzai@yahoo.com.hk  2003-06-07 08:19 -------
The error message returned by the compiler is:
test.c:4: internal compiler error: in cgraph_remove_edge, at cgraph.c:157

[Bug optimization/11121] [3.4 regression] [unit-at-a-time] function prototypes, function pointers and -O3

[pinskia@physics.uc.edu]

PLEASE REPLY TO gcc-bugzilla@gcc.gnu.org ONLY, *NOT* gcc-bugs@gcc.gnu.org.

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=11121


pinskia@physics.uc.edu changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|UNCONFIRMED                 |NEW
     Ever Confirmed|                            |1
           Keywords|                            |ice-on-valid-code
   Last reconfirmed|0000-00-00 00:00:00         |2003-06-07 14:00:37
               date|                            |
            Summary|function prototypes,        |[3.4 regression] [unit-at-a-
                   |function pointers and -O3   |time] function prototypes,
                   |                            |function pointers and -O3


------- Additional Comments From pinskia@physics.uc.edu  2003-06-07 14:00 -------
Confirmed on the mainline (20030606), it does not ICE when I turn off unit-at-a-time.

[Bug optimization/11121] [3.4 regression] [unit-at-a-time] function prototypes, function pointers and -O3

[pinskia at physics dot uc dot edu]

PLEASE REPLY TO gcc-bugzilla@gcc.gnu.org ONLY, *NOT* gcc-bugs@gcc.gnu.org.

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=11121


pinskia at physics dot uc dot edu changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|NEW                         |RESOLVED
         Resolution|                            |FIXED


------- Additional Comments From pinskia at physics dot uc dot edu  2003-07-05 04:08 -------
Fixed on the mainline already, 20030701.