http://gcc.gnu.org/bugzilla/show_bug.cgi?id=57113
Bug #: 57113
Summary: cannot resolve function in derived class
Classification: Unclassified
Product: gcc
Version: 4.8.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: c++
AssignedTo: unassig...@gcc.gnu.org
ReportedBy: g...@01.crabdance.com
Created attachment 29972
--> http://gcc.gnu.org/bugzilla/attachment.cgi?id=29972
preprocessed source file
source :
class ClassA
{
public:
virtual void meth(int n);
virtual void meth(const char* s, bool q);
};
class ClassB : public ClassA
{
public:
virtual void meth(int n);
};
void ClassA::meth(int n)
{
}
void ClassA::meth(const char* s, bool q)
{
}
void ClassB::meth(int n)
{
}
int main(int argc, char** argv)
{
const char* param = "foobar";
ClassB inst;
inst.meth(param, false);
return 0;
}
"gcc -v" :
Using built-in specs.
COLLECT_GCC=gcc
COLLECT_LTO_WRAPPER=/usr/libexec/gcc/i686-pc-linux-gnu/4.8.0/lto-wrapper
Target: i686-pc-linux-gnu
Configured with: ./gcc-4.8.0/configure --with-gnu-ld --with-pic --prefix=/usr
--with-local-prefix=/usr/local --sysconfdir=/etc --program-suffix=-4.8.0
--disable-nls --with-system-zlib --enable-shared --enable-__cxa_atexit
--enable-threads=posix --enable-tls --with-__thread --enable-cpp
--enable-languages=c,c++ --enable-version-specific-runtime-libs
Thread model: posix
gcc version 4.8.0 (GCC)
"gcc test.cc -save-temps" :
test.cc: In function 'int main(int, char**)':
test.cc:33:27: error: no matching function for call to 'ClassB::meth(const
char*&, bool)'
inst.meth(param, false);
^
test.cc:33:27: note: candidate is:
test.cc:23:6: note: virtual void ClassB::meth(int)
void ClassB::meth(int n)
^
test.cc:23:6: note: candidate expects 1 argument, 2 provided
maybe this is the correct behaviour, but i'd expect it to work
some typecasting let's us call the function w/o trouble:
((ClassA*)&inst)->meth(param, false);
thank you
