[Bug c/50507] New: Huge amount of memory used while building GCC4

[Bug c/50507] New: Huge amount of memory used while building GCC4

[fzvqedi at v dot mintemail.com]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=50507

             Bug #: 50507
           Summary: Huge amount of memory used while building GCC4
    Classification: Unclassified
           Product: gcc
           Version: 4.5.3
            Status: UNCONFIRMED
          Severity: critical
          Priority: P3
         Component: c
        AssignedTo: unassigned@gcc.gnu.org
        ReportedBy: fzvqedi@v.mintemail.com


when compiling GCC 4.5.3 core (C only), at some point there's a memory
requirement of more than 1 GB RAM.
this happens during the link stage of some object files.

after i set my virtual machine to have 1.2 GB RAM, it worked.

this is a major showstopper, you can only build GCC on restricted platforms
such as an ARM netbook by using swap-memory, which makes the build much slower
as it already is. Additionally this swap memory is usually on flash memory
device on such a system, decreasing its lifetime.

for comparison, GCC 3.4.6 builds well on a virtual machine with just 128 MB
RAM.

[Bug c/50507] Huge amount of memory used while building GCC4

[rguenth at gcc dot gnu.org]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=50507

Richard Guenther <rguenth at gcc dot gnu.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|UNCONFIRMED                 |WAITING
   Last reconfirmed|                            |2011-09-25
     Ever Confirmed|0                           |1
           Severity|critical                    |normal

--- Comment #1 from Richard Guenther <rguenth at gcc dot gnu.org> 2011-09-25 12:27:10 UTC ---
If it happens during the link stage then it's an issue with the linker, not
GCC.

Please provide information on how you configured GCC, and which host compiler
and
linker you use and what host platform you are working on.

[Bug c/50507] Huge amount of memory used while building GCC4

[fzvqedi at v dot mintemail.com]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=50507

--- Comment #2 from Roger Meyer <fzvqedi at v dot mintemail.com> 2011-09-25 19:03:05 UTC ---
(In reply to comment #1)
i'm using the stock gcc 4.4 that comes with debian 6 i386
compiling gcc 4.5.3 with the following options

./configure --with-newlib --with-headers=no --prefix=/ \
  --disable-multilib --disable-nls --disable-shared --disable-mudflap \
  --disable-libmudflap --disable-libssp --disable-libgomp \
  --libdir=/lib --libexecdir=/lib --mandir=/share/man --infodir=/share/info

i basically just set up a VM (without swap) using debian 6 netboot iso and
installed make, gcc via apt-get, then tried to build from source.

[Bug c/50507] Huge amount of memory used while building GCC4

[jason at gcc dot gnu.org]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=50507

--- Comment #3 from Jason Merrill <jason at gcc dot gnu.org> 2011-10-14 19:12:52 UTC ---
Author: jason
Date: Fri Oct 14 19:12:45 2011
New Revision: 180002

URL: http://gcc.gnu.org/viewcvs?root=gcc&view=rev&rev=180002
Log:
    PR c++/50507
    * method.c (walk_field_subobs): Check for NSDMI before
    complaining about uninitialized fields.

Added:
    trunk/gcc/testsuite/g++.dg/cpp0x/nsdmi-const1.C
Modified:
    trunk/gcc/cp/ChangeLog
    trunk/gcc/cp/method.c
    trunk/gcc/testsuite/ChangeLog

[Bug c/50507] Huge amount of memory used while building GCC4

[jason at gcc dot gnu.org]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=50507

Jason Merrill <jason at gcc dot gnu.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |jason at gcc dot gnu.org

--- Comment #4 from Jason Merrill <jason at gcc dot gnu.org> 2011-10-14 19:24:16 UTC ---
(In reply to comment #3)
>     PR c++/50507
>     * method.c (walk_field_subobs): Check for NSDMI before
>     complaining about uninitialized fields.

Oops, that was actually for bug 50707.

[Bug c/50507] Huge amount of memory used while building GCC4

[xiaoyuanbo at yeah dot net]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=50507

xiaoyuanbo <xiaoyuanbo at yeah dot net> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |xiaoyuanbo at yeah dot net

--- Comment #5 from xiaoyuanbo <xiaoyuanbo at yeah dot net> 2012-02-22 12:46:54 UTC ---
you need a comment

[Bug c/50507] Huge amount of memory used while building GCC4

[mpolacek at gcc dot gnu.org]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=50507

Marek Polacek <mpolacek at gcc dot gnu.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|WAITING                     |RESOLVED
                 CC|                            |mpolacek at gcc dot gnu.org
         Resolution|---                         |WONTFIX

--- Comment #6 from Marek Polacek <mpolacek at gcc dot gnu.org> ---
We hardly can do anything about gcc 4.4/4.5 now.