The following code incorrectly warns that the function g is missing a return
statement. The warning goes away if __FUNCTION__ is replaced by
(const char*)__FUNCTION__.
================ BEGIN CODE ==================
void f(const char*) __attribute__ ((noreturn));
template<class T>
class A
{
int g()
{
f(__FUNCTION__);
//f((const char*)__FUNCTION__);
}
};
template class A<int>;
============================ END code
wedge:scratch% g++ -O3 -Wall -c -v noreturn.cpp
Using built-in specs.
Target: x86_64-redhat-linux
Configured with: ../configure --prefix=/usr --mandir=/usr/share/man
--infodir=/usr/share/info --enable-shared --enable-threads=posix
--enable-checking=release --with-system-zlib --enable-__cxa_atexit
--disable-libunwind-exceptions --enable-libgcj-multifile
--enable-languages=c,c++,objc,obj-c++,java,fortran,ada --enable-java-awt=gtk
--disable-dssi --with-java-home=/usr/lib/jvm/java-1.4.2-gcj-1.4.2.0/jre
--with-cpu=generic --host=x86_64-redhat-linux
Thread model: posix
gcc version 4.1.1 20060525 (Red Hat 4.1.1-1)
/usr/libexec/gcc/x86_64-redhat-linux/4.1.1/cc1plus -quiet -v -D_GNU_SOURCE
noreturn.cpp -quiet -dumpbase noreturn.cpp -mtune=generic -auxbase noreturn -O3
-Wall -version -o /tmp/ccVj3EZ3.s
ignoring nonexistent directory
"/usr/lib/gcc/x86_64-redhat-linux/4.1.1/../../../../x86_64-redhat-linux/include"
#include "..." search starts here:
#include <...> search starts here:
/usr/lib/gcc/x86_64-redhat-linux/4.1.1/../../../../include/c++/4.1.1
/usr/lib/gcc/x86_64-redhat-linux/4.1.1/../../../../include/c++/4.1.1/x86_64-redhat-linux
/usr/lib/gcc/x86_64-redhat-linux/4.1.1/../../../../include/c++/4.1.1/backward
/usr/local/include
/usr/lib/gcc/x86_64-redhat-linux/4.1.1/include
/usr/include
End of search list.
GNU C++ version 4.1.1 20060525 (Red Hat 4.1.1-1) (x86_64-redhat-linux)
compiled by GNU C version 4.1.1 20060525 (Red Hat 4.1.1-1).
GGC heuristics: --param ggc-min-expand=100 --param ggc-min-heapsize=131072
Compiler executable checksum: 56236c31509b2b0d4a3c4ac0327da7d9
noreturn.cpp: In member function int A<T>::g():
noreturn.cpp:10: warning: no return statement in function returning non-void
as -V -Qy -o noreturn.o /tmp/ccVj3EZ3.s
GNU assembler version 2.16.91.0.6 (x86_64-redhat-linux) using BFD version
2.16.91.0.6 20060212
--
Summary: Incorrect "no return statement" warning with
__attribute__ ((noreturn)) and __FUNCTION__
Product: gcc
Version: 4.1.1
Status: UNCONFIRMED
Severity: minor
Priority: P3
Component: c++
AssignedTo: unassigned at gcc dot gnu dot org
ReportedBy: irving at cs dot stanford dot edu
GCC build triplet: x86_64-redhat-linux
GCC host triplet: x86_64-redhat-linux
GCC target triplet: x86_64-redhat-linux
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=30988
