[Bug c++/40723] New: Optimizer Causes Undefined References

[Bug c++/40723] New: Optimizer Causes Undefined References

[mckelvey at maskull dot com]

Valid code that links fine without optimization gets undefined references at
-O3. The references are to such as vtable, L8185, WinMain, etc.

Full log attached. I await direction as to what to provide to help solve this.
Temps will be fairly large, and I don't know how to approach a smaller test
case.

(Compile error in log has been separately reported.)

Cygwin and svn update are recent.


uname -a
CYGWIN_NT-5.1 MCKELVEY-XP 1.7.0(0.210/5/3) 2009-06-18 12:51 i686 Cygwin

g++ -v
Using built-in specs.
Target: i686-pc-cygwin
Configured with: /cygdrive/e/Home/cvsroot/gcc/configure --verbose
--enable-threads --disable-nls --enable-checking=release
--disable-win32-registry --enable-languages=c,c++
Thread model: posix
gcc version 4.5.0 20090705 (experimental) (GCC) 

BUILDING:
alias CONFIGURECVS='/cygdrive/e/Home/cvsroot/gcc/configure     --verbose
--enable-threads --disable-nls --enable-checking=release    
--disable-win32-registry --enable-languages=c,c++ 2>&1 | tee clog'

alias BUILD='nice make CFLAGS='\'''\'' BOOT_CFLAGS='\'''\'' LIBCFLAGS='\''-g
-O'\''     CXXFLAGS='\''-O'\'' LIBCXXFLAGS='\''-g -O'\''     bootstrap 2>&1 |
tee log'


-- 
           Summary: Optimizer Causes Undefined References
           Product: gcc
           Version: 4.5.0
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: c++
        AssignedTo: unassigned at gcc dot gnu dot org
        ReportedBy: mckelvey at maskull dot com
 GCC build triplet: i686-pc-cygwin
  GCC host triplet: i686-pc-cygwin
GCC target triplet: i686-pc-cygwin


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=40723

[Bug c++/40723] Optimizer Causes Undefined References

[mckelvey at maskull dot com]

------- Comment #1 from mckelvey at maskull dot com  2009-07-12 00:13 -------
Created an attachment (id=18178)
 --> (http://gcc.gnu.org/bugzilla/attachment.cgi?id=18178&action=view)
Build that shows errors


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http://gcc.gnu.org/bugzilla/show_bug.cgi?id=40723

[Bug c++/40723] Optimizer Causes Undefined References

[pinskia at gcc dot gnu dot org]

------- Comment #2 from pinskia at gcc dot gnu dot org  2009-07-12 00:15 -------
this looks like a different problem, that is an error is causing gcc to leave
behind a .o file which is invalid ...


-- 


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=40723

[Bug c++/40723] Optimizer Causes Undefined References

[mckelvey at maskull dot com]

------- Comment #3 from mckelvey at maskull dot com  2009-10-17 19:02 -------
Latest from subversion, bug no longer occurs. I think we can close.


-- 


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=40723

[Bug c++/40723] Optimizer Causes Undefined References

[manu at gcc dot gnu dot org]

------- Comment #4 from manu at gcc dot gnu dot org  2009-10-17 19:24 -------
The reporter cannot reproduce this anymore, no testcase available. Closed as
WORKSFORME. Please reopen if you find a testcase or it fails again.


-- 

manu at gcc dot gnu dot org changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |manu at gcc dot gnu dot org
             Status|UNCONFIRMED                 |RESOLVED
         Resolution|                            |WORKSFORME


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=40723