[Bug c++/39860] New: extremely long compile time

[pletzer at txcorp dot com]

The attached code takes 20 mins to compile on a Linux/Fedora 9 box when using
-O optimization, but only 21 seconds when using -O0

[plet...@quartic cxxps]$ time g++ -O -ftime-report -fmem-report -c cxxps.cpp >&
stat.txt

real    21m41.494s
user    16m24.774s
sys     0m19.713s

[plet...@quartic cxxps]$ time g++ -O0 -ftime-report -fmem-report -c cxxps.cpp
>& stat.txt

real    0m21.391s
user    0m17.666s
sys     0m2.453s


-- 
           Summary: extremely long compile time
           Product: gcc
           Version: 4.3.0
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: c++
        AssignedTo: unassigned at gcc dot gnu dot org
        ReportedBy: pletzer at txcorp dot com
 GCC build triplet: Configured with: ../configure --prefix=/usr --
                    mandir=/usr/share/
  GCC host triplet: Linux quartic.txcorp.com 2.6.25.14-108.fc9.x86_64 #1 SMP
                    Mon Aug
GCC target triplet: x86_64-redhat-linux


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=39860