http://gcc.gnu.org/bugzilla/show_bug.cgi?id=51664
Bug #: 51664 Summary: comparison incorrectly treated as template instantiation Classification: Unclassified Product: gcc Version: 4.6.1 Status: UNCONFIRMED Severity: normal Priority: P3 Component: c++ AssignedTo: unassig...@gcc.gnu.org ReportedBy: timon.g...@gmx.ch The following valid C++ code is rejected by GCC 4.6.1: --- template<class T> bool foo(T x){return x.foo<1;} --- $ g++ bug.cpp --- bug.cpp: In function ‘bool foo(T)’: bug.cpp:1:42: error: parse error in template argument list --- (The following similar code compiles: template<class T> bool bar(T x){return x.foo<1;} while the compilation of this code shows another instance of this broken behavior: template<class T> bool foo(T x){return x.qux<1;} template<class T> bool bar(T x){return x.foo<1;} ) further details: $ cat bug.cpp template<class T> bool foo(T x){return x.foo<1;} $ g++ -save-temps bug.cpp bug.cpp: In function ‘bool foo(T)’: bug.cpp:1:42: error: parse error in template argument list $ cat bug.ii # 1 "bug.cpp" # 1 "<built-in>" # 1 "<command-line>" # 1 "bug.cpp" template<class T> bool foo(T x){return x.foo<1;} $ gcc -v Using built-in specs. COLLECT_GCC=gcc 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)