https://gcc.gnu.org/bugzilla/show_bug.cgi?id=68208
Bug ID: 68208
Summary: g++ doesn't warn against reference self-initialization
Product: gcc
Version: 5.1.1
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: c++
Assignee: unassigned at gcc dot gnu.org
Reporter: ooprala at redhat dot com
Target Milestone: ---
Created attachment 36647
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=36647&action=edit
reproducer
/usr/bin/gcc -v
Target: x86_64-redhat-linux
Configured with: ../configure --enable-bootstrap
--enable-languages=c,c++,objc,obj-c++,fortran,ada,go,lto --prefix=/usr
--mandir=/usr/share/man --infodir=/usr/share/info
--with-bugurl=http://bugzilla.redhat.com/bugzilla --enable-shared
--enable-threads=posix --enable-checking=release --enable-multilib
--with-system-zlib --enable-__cxa_atexit --disable-libunwind-exceptions
--enable-gnu-unique-object --enable-linker-build-id
--with-linker-hash-style=gnu --enable-plugin --enable-initfini-array
--disable-libgcj --with-default-libstdcxx-abi=c++98 --with-isl --enable-libmpx
--enable-gnu-indirect-function --with-tune=generic --with-arch_32=i686
--build=x86_64-redhat-linux
Thread model: posix
gcc version 5.1.1 20150618 (Red Hat 5.1.1-4) (GCC)
g++ remains silent with -Wall -Wextra.
However, even with no extra options,
clang++ -c repr.cc emits:
repr.cc:4:10: warning: reference 'm' is not yet bound to a value when used here
[-Wuninitialized]
S0():m(m){}
^
1 warning generated.
