Launchpad has imported 8 comments from the remote bug at http://gcc.gnu.org/bugzilla/show_bug.cgi?id=51833.
If you reply to an imported comment from within Launchpad, your comment will be sent to the remote bug automatically. Read more about Launchpad's inter-bugtracker facilities at https://help.launchpad.net/InterBugTracking. ------------------------------------------------------------------------ On 2012-01-12T05:30:31+00:00 Richard Eames wrote: $ g++ -std=c++0x -o test.bin testcase.cpp test.cpp: In member function ‘void Foo::dostuff(T, U) [with T = Bar, U = bool(Arg*)]’: test.cpp:21:17: internal compiler error: in tsubst_copy, at cp/pt.c:11333 Please submit a full bug report, with preprocessed source if appropriate. See <file:///usr/share/doc/gcc-4.6/README.Bugs> for instructions. $ g++ -v Using built-in specs. COLLECT_GCC=g++ COLLECT_LTO_WRAPPER=/usr/lib/gcc/x86_64-linux-gnu/4.6.1/lto-wrapper Target: x86_64-linux-gnu Configured with: ../src/configure -v --with-pkgversion='Ubuntu/Linaro 4.6.1-9ubuntu3' --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 --with-sysroot=/ --enable-clocale=gnu --enable-libstdcxx-debug --enable-libstdcxx-time=yes --enable-plugin --enable-objc-gc --disable-werror --with-arch-32=i686 --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 4.6.1 (Ubuntu/Linaro 4.6.1-9ubuntu3) Reply at: https://bugs.launchpad.net/gcc/+bug/1036320/comments/0 ------------------------------------------------------------------------ On 2012-01-12T05:31:05+00:00 Richard Eames wrote: Created attachment 26304 Testcase Reply at: https://bugs.launchpad.net/gcc/+bug/1036320/comments/1 ------------------------------------------------------------------------ On 2012-01-12T05:58:23+00:00 Richard Eames wrote: Tested in 4.7.0, fails too. $ /usr/lib/gcc-snapshot/bin/g++ -std=c++0x -o test.bin testcase.cpp testcase.cpp: In member function 'void Foo::dostuff(T, U) [with T = Bar; U = bool(Arg*)]': testcase.cpp:21:17: internal compiler error: in tsubst_copy, at cp/pt.c:11748 $ /usr/lib/gcc-snapshot/bin/g++ -v Using built-in specs. COLLECT_GCC=/usr/lib/gcc-snapshot/bin/g++ COLLECT_LTO_WRAPPER=/usr/lib/gcc-snapshot/libexec/gcc/x86_64-linux-gnu/4.7.0/lto-wrapper Target: x86_64-linux-gnu Configured with: ../src/configure -v --with-pkgversion='Ubuntu/Linaro 20111010-0ubuntu1' --with-bugurl=file:///usr/share/doc/gcc-snapshot/README.Bugs --enable-languages=c,ada,c++,java,fortran,objc,obj-c++,go --prefix=/usr/lib/gcc-snapshot --enable-shared --enable-linker-build-id --with-system-zlib --disable-nls --with-sysroot=/ --enable-clocale=gnu --enable-libstdcxx-debug --enable-libstdcxx-time=yes --enable-plugin --disable-browser-plugin --enable-java-awt=gtk --enable-gtk-cairo --with-java-home=/usr/lib/jvm/java-1.5.0-gcj-4.7-snap/jre --enable-java-home --with-jvm-root-dir=/usr/lib/jvm/java-1.5.0-gcj-4.7-snap --with-jvm-jar-dir=/usr/lib/jvm-exports/java-1.5.0-gcj-4.7-snap --with-arch-directory=amd64 --with-ecj-jar=/usr/share/java/eclipse-ecj.jar --enable-objc-gc --disable-werror --with-arch-32=i686 --with-tune=generic --enable-checking=yes --build=x86_64-linux-gnu --host=x86_64-linux-gnu --target=x86_64-linux-gnu Thread model: posix gcc version 4.7.0 20111010 (experimental) [trunk revision 179769] (Ubuntu/Linaro 20111010-0ubuntu1) Reply at: https://bugs.launchpad.net/gcc/+bug/1036320/comments/2 ------------------------------------------------------------------------ On 2012-01-12T08:52:43+00:00 Rguenth wrote: Confirmed. Not sure if the testcase is valid or not. Reply at: https://bugs.launchpad.net/gcc/+bug/1036320/comments/3 ------------------------------------------------------------------------ On 2012-01-12T09:34:49+00:00 Redi wrote: It's not valid, you can't pass a function type by value Reply at: https://bugs.launchpad.net/gcc/+bug/1036320/comments/4 ------------------------------------------------------------------------ On 2012-01-12T20:01:15+00:00 Richard Eames wrote: I've reduced the testcase further. It appears to be a problem with templates. The reason I was passing a function type in the template was because std::function<bool(Arg*)> wouldn't work for me. If I take out the first parameter so that it's just the function pointer, then std::function works with the lambda as a default argument, but as soon as the function is templated I get the IRC. Reply at: https://bugs.launchpad.net/gcc/+bug/1036320/comments/5 ------------------------------------------------------------------------ On 2012-01-12T20:01:52+00:00 Richard Eames wrote: Created attachment 26309 Reduced test case Reply at: https://bugs.launchpad.net/gcc/+bug/1036320/comments/6 ------------------------------------------------------------------------ On 2012-01-12T20:43:04+00:00 Redi wrote: Further reduced struct function { template<typename T> function(T) { } }; class Foo { public: template<typename> void dostuff(function callback = []() { }) { } }; int main() { Foo foo; foo.dostuff<int>(); } Reply at: https://bugs.launchpad.net/gcc/+bug/1036320/comments/7 ** Changed in: gcc Status: Unknown => Confirmed ** Changed in: gcc Importance: Unknown => Medium -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1036320 Title: internal compiler error: in tsubst_copy To manage notifications about this bug go to: https://bugs.launchpad.net/gcc/+bug/1036320/+subscriptions -- ubuntu-bugs mailing list [email protected] https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
