https://gcc.gnu.org/bugzilla/show_bug.cgi?id=61379
Bug ID: 61379
Summary: __attribute__((noreturn)) ignored on pure virtual
member functions
Product: gcc
Version: 4.9.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: c++
Assignee: unassigned at gcc dot gnu.org
Reporter: meiomorphism at gmail dot com
Created attachment 32881
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=32881&action=edit
test file (#include-free)
Pure-virtual member functions with __attribute__((noreturn)) attached are not
recognized as being noreturn. This can lead to spurious warnings.
Use of [[noreturn]] rather than __attribute__((noreturn)) yields the same
behavior.
Tested on both Debian wheezy's gcc 4.7.2 and a locally-compiled
officially-sourced gcc 4.9.0. The output of `g++ -v' for the latter is given
below.
To reproduce, compile the attached file with -Wall; the spurious warning
> virtual-noreturn.cpp:12:1: warning: control reaches end of non-void function
> [-Wreturn-type]
(some context omitted) will be given.
=== BEGIN g++ -v output ===
Using built-in specs.
COLLECT_GCC=/home/user/local/gcc-4.9/bin/g++
COLLECT_LTO_WRAPPER=/home/user/local/gcc-4.9/libexec/gcc/x86_64-unknown-linux-gnu/4.9.0/lto-wrapper
Target: x86_64-unknown-linux-gnu
Configured with: /home/user/src/gcc-4.9.0/configure
--prefix=/home/user/local/gcc-4.9
--with-local-prefix=/home/user/local/gcc-4.9-include --disable-bootstrap
--disable-multilib : (reconfigured) /home/user/src/gcc-4.9.0/configure
--prefix=/home/user/local/gcc-4.9
--with-local-prefix=/home/user/local/gcc-4.9-include --disable-bootstrap
--disable-multilib --enable-languages=c,c++
Thread model: posix
gcc version 4.9.0 (GCC)
=== END gcc -v output ===
