http://gcc.gnu.org/bugzilla/show_bug.cgi?id=49896
Harald van Dijk <harald at gigawatt dot nl> changed:
What |Removed |Added
----------------------------------------------------------------------------
CC| |harald at gigawatt dot nl
--- Comment #4 from Harald van Dijk <harald at gigawatt dot nl> 2011-07-29
17:55:21 UTC ---
0x80000000 is (possibly wrongly) rejected as an integer constant expression,
because it is not within int's range. It is accepted with an explicit cast.
With a slight modification, it triggers an ICE:
template<class C>
class test {
protected:
static const int versionConst = 0x80000000;
enum { versionEnum = versionConst };
public:
int getVersion();
};
template<class C>
int test<C>::getVersion() {
return versionEnum;
}
class dummy_class {};
int main() {
test<dummy_class> t;
return t.getVersion();
}
$ g++ -c test.cc
test.cc: In instantiation of ‘test<dummy_class>’:
test.cc:18:21: instantiated from here
test.cc:5:8: error: the value of ‘test<dummy_class>::versionConst’ is not
usable in a constant expression
test.cc:5:8: internal compiler error: in non_const_var_error, at
cp/semantics.c:6852
Please submit a full bug report,
with preprocessed source if appropriate.
See <http://gcc.gnu.org/bugs.html> for instructions.
$ g++ -v
Using built-in specs.
COLLECT_GCC=g++
COLLECT_LTO_WRAPPER=/usr/libexec/gcc/x86_64-pc-linux-gnu/4.6.1/lto-wrapper
Target: x86_64-pc-linux-gnu
Configured with: /var/tmp/pkgbuild/sys-devel/gcc-4.6.1/work/gcc-4.6.1/configure
--build=x86_64-pc-linux-gnu --host=x86_64-pc-linux-gnu --prefix=/usr
--enable-languages=c,c++,ada --enable-checking
Thread model: posix
gcc version 4.6.1 (GCC)
