http://gcc.gnu.org/bugzilla/show_bug.cgi?id=47704
Summary: [4.6 regression] [C++0x] Java-related error message when trying to instantiate a strongly typed enum with new Product: gcc Version: 4.6.0 Status: UNCONFIRMED Severity: normal Priority: P3 Component: c++ AssignedTo: unassig...@gcc.gnu.org ReportedBy: a.chava...@gmail.com $ g++ -v Using built-in specs. COLLECT_GCC=g++ COLLECT_LTO_WRAPPER=/usr/libexec/gcc/x86_64-unknown-linux-gnu/4.6.0/lto-wrapper Target: x86_64-unknown-linux-gnu Configured with: ../gcc-src/configure --enable-lto --prefix=/usr --enable-languages=c,c++ --disable-multilib Thread model: posix gcc version 4.6.0 20110211 (experimental) (GCC) It was built from svn trunk, revision 170055 The following code fails to compile with this error (with -std=c++0x): bug.cpp: In function ‘int main(int, char**)’: bug.cpp:9:7: error: call to Java constructor, while ‘jclass’ undefined ======== int main( int argc, char** argv ) { enum class SomeEnum { AAA, BBB }; new SomeEnum; return 0; } ======== It worked in gcc 4.5.