[Bug middle-end/11771] New: [3.4 regression] Segfault with simple double arithmetics

[falk at debian dot org]

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

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=11771

           Summary: [3.4 regression] Segfault with simple double arithmetics
           Product: gcc
           Version: 3.4
            Status: UNCONFIRMED
          Keywords: ice-on-valid-code
          Severity: critical
          Priority: P2
         Component: middle-end
        AssignedTo: unassigned at gcc dot gnu dot org
        ReportedBy: falk at debian dot org
                CC: gcc-bugs at gcc dot gnu dot org
 GCC build triplet: alphaev68-unknown-linux-gnu
  GCC host triplet: alphaev68-unknown-linux-gnu
GCC target triplet: alphaev68-unknown-linux-gnu

% cat foo.c 
double f(double x) {
    return -(1 - x) + (x ? -(1 - x) : 0);
}

% gcc -v -c foo.c
Reading specs from
/usr/local/stow/gcc-2003.08.02/bin/../lib/gcc/alphaev68-unknown-linux-gnu/3.4/specs
Configured with: ../configure --enable-languages=c++
Thread model: posix
gcc version 3.4 20030801 (experimental)
 /usr/local/stow/gcc-2003.08.02/bin/../libexec/gcc/alphaev68-unknown-linux-gnu/3.4/cc1 -quiet -v -iprefix /usr/local/stow/gcc-2003.08.02/bin/../lib/gcc/alphaev68-unknown-linux-gnu/3.4/ foo.c -quiet -dumpbase foo.c -mcpu=ev67 -auxbase foo -version -o /tmp/ccYl8EBT.s
ignoring nonexistent directory
"/usr/local/stow/gcc-2003.08.02/bin/../lib/gcc/alphaev68-unknown-linux-gnu/3.4/../../../../alphaev68-unknown-linux-gnu/include"
ignoring nonexistent directory "NONE/include"
ignoring duplicate directory
"/usr/local/lib/gcc/alphaev68-unknown-linux-gnu/3.4/include"
ignoring nonexistent directory
"/usr/local/lib/gcc/alphaev68-unknown-linux-gnu/3.4/../../../../alphaev68-unknown-linux-gnu/include"
#include "..." search starts here:
#include <...> search starts here:
 /usr/local/stow/gcc-2003.08.02/bin/../lib/gcc/alphaev68-unknown-linux-gnu/3.4/include
 /usr/local/include
 /usr/include
End of search list.
GNU C version 3.4 20030801 (experimental) (alphaev68-unknown-linux-gnu)
        compiled by GNU C version 3.4 20030801 (experimental).
GGC heuristics: --param ggc-min-expand=64 --param ggc-min-heapsize=64090
gcc: Internal error: Segmentation fault (program cc1)
Please submit a full bug report.
See <URL:http://gcc.gnu.org/bugs.html> for instructions.

Also occurs with g++. 3.3 works fine.