[Bug c++/27881] New: Memory exhausted with -finline-functions on testsuite file alias3.C

["flash at pobox dot com" <gcc-bugzilla at gcc dot gnu dot org>]

Compiling the GCC testsuite file alias3.C with -O1 -finline-functions exhausts
memory on checking=all or =yes builds of GCC 4.1.1, on Ubuntu 5.04 with virtual
memory limited to 500M.  Roughly similar behavior on Mac OSX 10.4.6 with a
checking=all build of GCC 4.1.0, though ulimit is broken on the Mac, so I had
to kill the process manually.  A checking=all build of GCC 4.0.2 compiles
without error.
    The symptoms are similar to my PR26774, but that's fixed in 4.1.1, and
didn't require optimization.
    Here's the Delta-reduced file:

namespace A{
  struct X{};
  void f(X&);
  namespace a_very_long_namespace_name{
  }
}
namespace B = A;
void B::f(A::X& x)
{
  B::f(x);
  f(x);
}


============
Here's the session; I'll attach the preprocessed file.

131> /opt/gcc411-chk-all/bin/gcc -v -save-temps -c -O1 -finline-functions  
../cpp/bugfiles/GCC_bugfiles/noerror/131415_alias3_min.cpp
Using built-in specs.
Target: i686-pc-linux-gnu
Configured with: /third-party_source/gcc-4.1.1/configure --enable-checking=all
--prefix=/opt/gcc411-chk-all/ --enable-languages=c,c++
--with-comment=PalmSource checking=all build by Flash Sheridan 5/31/06 on
Kondal
Thread model: posix
gcc version 4.1.1
 /home/opt/gcc411-chk-all/bin/../libexec/gcc/i686-pc-linux-gnu/4.1.1/cc1plus -E
-quiet -v -iprefix
/home/opt/gcc411-chk-all/bin/../lib/gcc/i686-pc-linux-gnu/4.1.1/ -D_GNU_SOURCE
../cpp/bugfiles/GCC_bugfiles/noerror/131415_alias3_min.cpp -mtune=pentiumpro
-finline-functions -O1 -fpch-preprocess -o 131415_alias3_min.ii
ignoring nonexistent directory
"/home/opt/gcc411-chk-all/bin/../lib/gcc/i686-pc-linux-gnu/4.1.1/../../../../i686-pc-linux-gnu/include"
ignoring duplicate directory
"/opt/gcc411-chk-all//lib/gcc/i686-pc-linux-gnu/4.1.1/../../../../include/c++/4.1.1"
ignoring duplicate directory
"/opt/gcc411-chk-all//lib/gcc/i686-pc-linux-gnu/4.1.1/../../../../include/c++/4.1.1/i686-pc-linux-gnu"
ignoring duplicate directory
"/opt/gcc411-chk-all//lib/gcc/i686-pc-linux-gnu/4.1.1/../../../../include/c++/4.1.1/backward"
ignoring duplicate directory
"/opt/gcc411-chk-all//lib/gcc/i686-pc-linux-gnu/4.1.1/include"
ignoring nonexistent directory
"/opt/gcc411-chk-all//lib/gcc/i686-pc-linux-gnu/4.1.1/../../../../i686-pc-linux-gnu/include"
#include "..." search starts here:
#include <...> search starts here:

/home/opt/gcc411-chk-all/bin/../lib/gcc/i686-pc-linux-gnu/4.1.1/../../../../include/c++/4.1.1

/home/opt/gcc411-chk-all/bin/../lib/gcc/i686-pc-linux-gnu/4.1.1/../../../../include/c++/4.1.1/i686-pc-linux-gnu

/home/opt/gcc411-chk-all/bin/../lib/gcc/i686-pc-linux-gnu/4.1.1/../../../../include/c++/4.1.1/backward
 /home/opt/gcc411-chk-all/bin/../lib/gcc/i686-pc-linux-gnu/4.1.1/include
 /usr/local/include
 /opt/gcc411-chk-all//include
 /usr/include
End of search list.
 /home/opt/gcc411-chk-all/bin/../libexec/gcc/i686-pc-linux-gnu/4.1.1/cc1plus
-fpreprocessed 131415_alias3_min.ii -quiet -dumpbase 131415_alias3_min.cpp
-mtune=pentiumpro -auxbase 131415_alias3_min -O1 -version -finline-functions -o
131415_alias3_min.s
GNU C++ version 4.1.1 (i686-pc-linux-gnu)
        compiled by GNU C version 3.3.5 (Debian 1:3.3.5-8ubuntu2).
GGC heuristics: --param ggc-min-expand=0 --param ggc-min-heapsize=0
Compiler executable checksum: 0017ab69adc149664c23a10e9b6eba83
virtual memory exhausted: Cannot allocate memory


---
http://pobox.com/~flash
Quality Lead for Compilers and Debuggers
PalmSource, Inc. Tools Quality Assurance
PalmSource bug 131415


-- 
           Summary: Memory exhausted with -finline-functions on testsuite
                    file alias3.C
           Product: gcc
           Version: 4.1.1
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: c++
        AssignedTo: unassigned at gcc dot gnu dot org
        ReportedBy: flash at pobox dot com


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=27881