Hi, 
I was trying to compile my Openmp parallel code, and see the effects of turning
of f of some optimization parameters. I get an internal compiler error. The
whole error is attached below. 

miner-02:/files4/berkin/kmeans % make OPTFLAGS="-O3 -fno-unit-at-a-time -v
-save-temps"
/files4/berkin/gcc-4.2.1/bin/gcc -fopenmp -O3 -fno-unit-at-a-time -v
-save-temps   -c fuzzy_kmeans.c
Using built-in specs.
Target: i686-pc-linux-gnu
Configured with: ../gcc/configure --prefix=/files4/berkin/gcc-4.2.1
--enable-threads
Thread model: posix
gcc version 4.2.1
 /files4/berkin/gcc-4.2.1/libexec/gcc/i686-pc-linux-gnu/4.2.1/cc1 -E -quiet -v
-D_REENTRANT fuzzy_kmeans.c -mtune=generic -fopenmp -fno-unit-at-a-time -O3
-fpch-preprocess -o fuzzy_kmeans.i
ignoring nonexistent directory
"/files4/berkin/gcc-4.2.1/lib/gcc/i686-pc-linux-gnu/4.2.1/../../../../i686-pc-linux-gnu/include"
#include "..." search starts here:
#include <...> search starts here:
 /usr/local/include
 /files4/berkin/gcc-4.2.1/include
 /files4/berkin/gcc-4.2.1/lib/gcc/i686-pc-linux-gnu/4.2.1/include
 /usr/include
End of search list.
 /files4/berkin/gcc-4.2.1/libexec/gcc/i686-pc-linux-gnu/4.2.1/cc1
-fpreprocessed fuzzy_kmeans.i -quiet -dumpbase fuzzy_kmeans.c -mtune=generic
-auxbase fuzzy_kmeans -O3 -version -fopenmp -fno-unit-at-a-time -o
fuzzy_kmeans.s
GNU C version 4.2.1 (i686-pc-linux-gnu)
        compiled by GNU C version 4.2.1.
GGC heuristics: --param ggc-min-expand=100 --param ggc-min-heapsize=131072
Compiler executable checksum: 80e6f10ad3e2beca945f13dba64821c7
fuzzy_kmeans.c: In function 'fuzzy_kmeans_cluster':
fuzzy_kmeans.c:111: internal compiler error: Segmentation fault
Please submit a full bug report,
with preprocessed source if appropriate.
See <URL:http://gcc.gnu.org/bugs.html> for instructions.
make: *** [fuzzy_kmeans.o] Error 1


-- 
           Summary: Internal compiler error when using -fopenmp -O3 -fno-
                    unit-at-a-time option
           Product: gcc
           Version: 4.2.1
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: c
        AssignedTo: unassigned at gcc dot gnu dot org
        ReportedBy: boz283 at ece dot northwestern dot edu
 GCC build triplet: i686-pc-linux-gnu
  GCC host triplet: AMD Athlon 2.2ghz
GCC target triplet: i686-pc-linux-gnu


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=32885

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