[Bug c++/20826] New: 4.0 regression: excessive compiler resource usage

["dwmw2 at infradead dot org" <gcc-bugzilla at gcc dot gnu dot org>]

Compiling the attached file with '-fno-enforce-eh-specs -O2' on a 450MHz G4 with
gcc 3.4 takes 30 seconds. Compiling it with gcc 4 on a 1.3GHz G4 takes a number
of hours before failing:
cc1plus: out of memory allocating 1643995136 bytes after a total of 94982144 bytes

This are both 64-bit-capable toolchains, defaulting to 32-bit output. (Fedora
Core 3 and Fedora Core 4 respectively, on PPC).

-- 
           Summary: 4.0 regression: excessive compiler resource usage
           Product: gcc
           Version: 4.0.0
            Status: UNCONFIRMED
          Severity: critical
          Priority: P2
         Component: c++
        AssignedTo: unassigned at gcc dot gnu dot org
        ReportedBy: dwmw2 at infradead dot org
                CC: gcc-bugs at gcc dot gnu dot org
  GCC host triplet: ppc-redhat-linux
GCC target triplet: ppc64-redhat-linux


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=20826