http://gcc.gnu.org/bugzilla/show_bug.cgi?id=51460
Bug #: 51460
Summary: [4.6 regression] Struct with two boost mutexes
allocated on the heap inside of a while loop causes
compiler segfault
Classification: Unclassified
Product: gcc
Version: 4.6.2
Status: UNCONFIRMED
Severity: critical
Priority: P3
Component: c++
AssignedTo: unassig...@gcc.gnu.org
ReportedBy: fsar...@ucdavis.edu
Hello,
This is my first gcc bug report so I apologize if this is in the wrong place. I
tried searching for previously reported bugs, but couldn't find anything that
was similar to my bug report.
gcc segfaults while trying to compile the following program:
#include <boost/thread/mutex.hpp>
struct foo {
boost::mutex bar;
boost::mutex baz;
};
int main() {
while(true) {
foo* f = new foo;
continue;
}
return 0;
}
My compile command is
$ g++ -g -O3 bug.cc /usr/lib64/libboost_thread-gcc43-mt-1_37.a
The full output of verbose gcc compile is:
[fsareshwala@fsareshwala-l /tmp]% g++ -v -save-temps -g -O3 lol.cc
/usr/lib64/libboost_thread-gcc43-mt-1_37.a [ /tmp ]
Using built-in specs.
COLLECT_GCC=g++
COLLECT_LTO_WRAPPER=/usr/lib/gcc/x86_64-linux-gnu/4.6/lto-wrapper
Target: x86_64-linux-gnu
Configured with: ../src/configure -v --with-pkgversion='Debian 4.6.2-5'
--with-bugurl=file:///usr/share/doc/gcc-4.6/README.Bugs
--enable-languages=c,c++,fortran,objc,obj-c++,go --prefix=/usr
--program-suffix=-4.6 --enable-shared --enable-linker-build-id
--with-system-zlib --libexecdir=/usr/lib --without-included-gettext
--enable-threads=posix --with-gxx-include-dir=/usr/include/c++/4.6
--libdir=/usr/lib --enable-nls --enable-clocale=gnu --enable-libstdcxx-debug
--enable-libstdcxx-time=yes --enable-plugin --enable-objc-gc
--with-arch-32=i586 --with-tune=generic --enable-checking=release
--build=x86_64-linux-gnu --host=x86_64-linux-gnu --target=x86_64-linux-gnu
Thread model: posix
gcc version 4.6.2 (Debian 4.6.2-5)
COLLECT_GCC_OPTIONS='-v' '-save-temps' '-g' '-O3' '-shared-libgcc'
'-mtune=generic' '-march=x86-64'
/usr/lib/gcc/x86_64-linux-gnu/4.6/cc1plus -E -quiet -v -imultilib .
-imultiarch x86_64-linux-gnu -D_GNU_SOURCE lol.cc -mtune=generic -march=x86-64
-g -fworking-directory -O3 -fpch-preprocess -o lol.ii
ignoring nonexistent directory "/usr/local/include/x86_64-linux-gnu"
ignoring nonexistent directory
"/usr/lib/gcc/x86_64-linux-gnu/4.6/../../../../x86_64-linux-gnu/include"
#include "..." search starts here:
#include <...> search starts here:
/usr/include/c++/4.6
/usr/include/c++/4.6/x86_64-linux-gnu/.
/usr/include/c++/4.6/backward
/usr/lib/gcc/x86_64-linux-gnu/4.6/include
/usr/local/include
/usr/lib/gcc/x86_64-linux-gnu/4.6/include-fixed
/usr/include/x86_64-linux-gnu
/usr/include
End of search list.
COLLECT_GCC_OPTIONS='-v' '-save-temps' '-g' '-O3' '-shared-libgcc'
'-mtune=generic' '-march=x86-64'
/usr/lib/gcc/x86_64-linux-gnu/4.6/cc1plus -fpreprocessed lol.ii -quiet
-dumpbase lol.cc -mtune=generic -march=x86-64 -auxbase lol -g -O3 -version -o
lol.s
GNU C++ (Debian 4.6.2-5) version 4.6.2 (x86_64-linux-gnu)
compiled by GNU C version 4.6.2, GMP version 5.0.2, MPFR version
3.1.0-p3, MPC version 0.9
GGC heuristics: --param ggc-min-expand=100 --param ggc-min-heapsize=131072
GNU C++ (Debian 4.6.2-5) version 4.6.2 (x86_64-linux-gnu)
compiled by GNU C version 4.6.2, GMP version 5.0.2, MPFR version
3.1.0-p3, MPC version 0.9
GGC heuristics: --param ggc-min-expand=100 --param ggc-min-heapsize=131072
Compiler executable checksum: 16d7c73e7d9f05ccb8ae4d28e530e18c
g++: internal compiler error: Segmentation fault (program cc1plus)
Please submit a full bug report,
with preprocessed source if appropriate.
See <file:///usr/share/doc/gcc-4.6/README.Bugs> for instructions.
Please let me know if I have forgotten anything you need.
Thank you,
Faraaz Sareshwala
