http://gcc.gnu.org/bugzilla/show_bug.cgi?id=45857
Summary: memory exhausted compiling some variadic templates
Product: gcc
Version: 4.5.2
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: c++
AssignedTo: unassig...@gcc.gnu.org
ReportedBy: g...@abeckmann.de
Created attachment 21933
--> http://gcc.gnu.org/bugzilla/attachment.cgi?id=21933
minimized testcase
This looks like a regression in 4.5, couldn't reproduce it in 4.3, 4.4 or 4.6.
$ ulimit -v 2600000 # 2.5 GB
$ ulimit -t 120
$ g++-4.5.x -v -std=c++0x -O2 -c memory_hog.min.cpp
Using built-in specs.
COLLECT_GCC=/opt/software/x86_64/gcc-4.5.x/bin/g++-4.5.x
COLLECT_LTO_WRAPPER=/opt/software/x86_64/gcc-4.5.x/libexec/gcc/x86_64-unknown-linux-gnu/4.5.2/lto-wrapper
Target: x86_64-unknown-linux-gnu
Configured with: ../gcc-4_5-branch/configure
--prefix=/opt/software/x86_64/gcc-4.5.x --program-suffix=-4.5.x
--enable-languages=c,c++ --enable-checking
Thread model: posix
gcc version 4.5.2 20100930 (prerelease) (GCC)
COLLECT_GCC_OPTIONS='-v' '-std=c++0x' '-O2' '-c' '-shared-libgcc'
'-mtune=generic' '-march=x86-64'
/opt/software/x86_64/gcc-4.5.x/libexec/gcc/x86_64-unknown-linux-gnu/4.5.2/cc1plus
-quiet -v -D_GNU_SOURCE memory_hog.min.cpp -quiet -dumpbase memory_hog.min.cpp
-mtune=generic -march=x86-64 -auxbase memory_hog.min -O2 -std=c++0x -version -o
/tmp/cciTomr1.s
GNU C++ (GCC) version 4.5.2 20100930 (prerelease) (x86_64-unknown-linux-gnu)
compiled by GNU C version 4.5.2 20100930 (prerelease), GMP version
4.3.2, MPFR version 3.0.0-p3, MPC version 0.8.2
GGC heuristics: --param ggc-min-expand=30 --param ggc-min-heapsize=4096
ignoring nonexistent directory
"/opt/software/x86_64/gcc-4.5.x/lib/gcc/x86_64-unknown-linux-gnu/4.5.2/../../../../x86_64-unknown-linux-gnu/include"
#include "..." search starts here:
#include <...> search starts here:
/opt/software/x86_64/gcc-4.5.x/lib/gcc/x86_64-unknown-linux-gnu/4.5.2/../../../../include/c++/4.5.2
/opt/software/x86_64/gcc-4.5.x/lib/gcc/x86_64-unknown-linux-gnu/4.5.2/../../../../include/c++/4.5.2/x86_64-unknown-linux-gnu
/opt/software/x86_64/gcc-4.5.x/lib/gcc/x86_64-unknown-linux-gnu/4.5.2/../../../../include/c++/4.5.2/backward
/usr/local/include
/opt/software/x86_64/gcc-4.5.x/include
/opt/software/x86_64/gcc-4.5.x/lib/gcc/x86_64-unknown-linux-gnu/4.5.2/include
/opt/software/x86_64/gcc-4.5.x/lib/gcc/x86_64-unknown-linux-gnu/4.5.2/include-fixed
/usr/include
End of search list.
GNU C++ (GCC) version 4.5.2 20100930 (prerelease) (x86_64-unknown-linux-gnu)
compiled by GNU C version 4.5.2 20100930 (prerelease), GMP version
4.3.2, MPFR version 3.0.0-p3, MPC version 0.8.2
GGC heuristics: --param ggc-min-expand=30 --param ggc-min-heapsize=4096
Compiler executable checksum: 1be67b2d58ac92677e3812da572956df
memory_hog.min.cpp: In instantiation of ‘_Tuple_impl<0, void*, X<> >’:
memory_hog.min.cpp:28:1: instantiated from ‘tuple<void*, X<> >’
memory_hog.min.cpp:51:27: instantiated from here
memory_hog.min.cpp:15:1: warning: direct base ‘_Head_base’ inaccessible in
‘_Tuple_impl<0, void*, X<> >’ due to ambiguity
virtual memory exhausted: Cannot allocate memory
