https://gcc.gnu.org/bugzilla/show_bug.cgi?id=77967
Bug ID: 77967 Summary: trying to add a method to a template alias triggers an internal compiler error Product: gcc Version: 5.4.0 Status: UNCONFIRMED Severity: trivial Priority: P3 Component: c++ Assignee: unassigned at gcc dot gnu.org Reporter: kaelig.chatel at lixoft dot com Target Milestone: --- Created attachment 39804 --> https://gcc.gnu.org/bugzilla/attachment.cgi?id=39804&action=edit preprocessed source code raising the error ---------- Fixing the code will remove the problem. And the output still gives the location of the error, if no real diagnosis as usual for an invalid code. So, I think this is a trivial bug in its consequencies for users. ---------- The problem is that an "internal compiler error" is raised for the attached code: - first, a template alias is defined - then, an erroneous code tries to define a method for this template alias as if it was a template class (in the first use case, it was previously a class, and I forgot to clean this part of my code, raising the "internal compiler error"). ---------- command ------------------------ gcc -v -save-temps -std=c++11 method_on_alias_internal_error.cpp --------- command outputs ----------------------- Using built-in specs. COLLECT_GCC=gcc COLLECT_LTO_WRAPPER=/usr/lib/gcc/x86_64-linux-gnu/5/lto-wrapper Target: x86_64-linux-gnu Configured with: ../src/configure -v --with-pkgversion='Ubuntu 5.4.0-6ubuntu1~16.04.2' --with-bugurl=file:///usr/share/doc/gcc-5/README.Bugs --enable-languages=c,ada,c++,java,go,d,fortran,objc,obj-c++ --prefix=/usr --program-suffix=-5 --enable-shared --enable-linker-build-id --libexecdir=/usr/lib --without-included-gettext --enable-threads=posix --libdir=/usr/lib --enable-nls --with-sysroot=/ --enable-clocale=gnu --enable-libstdcxx-debug --enable-libstdcxx-time=yes --with-default-libstdcxx-abi=new --enable-gnu-unique-object --disable-vtable-verify --enable-libmpx --enable-plugin --with-system-zlib --disable-browser-plugin --enable-java-awt=gtk --enable-gtk-cairo --with-java-home=/usr/lib/jvm/java-1.5.0-gcj-5-amd64/jre --enable-java-home --with-jvm-root-dir=/usr/lib/jvm/java-1.5.0-gcj-5-amd64 --with-jvm-jar-dir=/usr/lib/jvm-exports/java-1.5.0-gcj-5-amd64 --with-arch-directory=amd64 --with-ecj-jar=/usr/share/java/eclipse-ecj.jar --enable-objc-gc --enable-multiarch --disable-werror --with-arch-32=i686 --with-abi=m64 --with-multilib-list=m32,m64,mx32 --enable-multilib --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 5.4.0 20160609 (Ubuntu 5.4.0-6ubuntu1~16.04.2) COLLECT_GCC_OPTIONS='-v' '-save-temps' '-std=c++11' '-mtune=generic' '-march=x86-64' /usr/lib/gcc/x86_64-linux-gnu/5/cc1plus -E -quiet -v -imultiarch x86_64-linux-gnu -D_GNU_SOURCE method_on_alias_internal_error.cpp -mtune=generic -march=x86-64 -std=c++11 -fpch-preprocess -fstack-protector-strong -Wformat -Wformat-security -o method_on_alias_internal_error.ii ignoring duplicate directory "/usr/include/x86_64-linux-gnu/c++/5" ignoring nonexistent directory "/usr/local/include/x86_64-linux-gnu" ignoring nonexistent directory "/usr/lib/gcc/x86_64-linux-gnu/5/../../../../x86_64-linux-gnu/include" #include "..." search starts here: #include <...> search starts here: /usr/include/c++/5 /usr/include/x86_64-linux-gnu/c++/5 /usr/include/c++/5/backward /usr/lib/gcc/x86_64-linux-gnu/5/include /usr/local/include /usr/lib/gcc/x86_64-linux-gnu/5/include-fixed /usr/include/x86_64-linux-gnu /usr/include End of search list. COLLECT_GCC_OPTIONS='-v' '-save-temps' '-std=c++11' '-mtune=generic' '-march=x86-64' /usr/lib/gcc/x86_64-linux-gnu/5/cc1plus -fpreprocessed method_on_alias_internal_error.ii -quiet -dumpbase method_on_alias_internal_error.cpp -mtune=generic -march=x86-64 -auxbase method_on_alias_internal_error -std=c++11 -version -fstack-protector-strong -Wformat -Wformat-security -o method_on_alias_internal_error.s GNU C++11 (Ubuntu 5.4.0-6ubuntu1~16.04.2) version 5.4.0 20160609 (x86_64-linux-gnu) compiled by GNU C version 5.4.0 20160609, GMP version 6.1.0, MPFR version 3.1.4, MPC version 1.0.3 GGC heuristics: --param ggc-min-expand=100 --param ggc-min-heapsize=131072 GNU C++11 (Ubuntu 5.4.0-6ubuntu1~16.04.2) version 5.4.0 20160609 (x86_64-linux-gnu) compiled by GNU C version 5.4.0 20160609, GMP version 6.1.0, MPFR version 3.1.4, MPC version 1.0.3 GGC heuristics: --param ggc-min-expand=100 --param ggc-min-heapsize=131072 Compiler executable checksum: 15157934e8203caff79287fd8f2d2843 method_on_alias_internal_error.cpp:7:1: internal compiler error: in cp_parser_type_name, at cp/parser.c:15248 bar<T>::bar(const T& cr) ^ Please submit a full bug report, with preprocessed source if appropriate. See <file:///usr/share/doc/gcc-5/README.Bugs> for instructions.