[Bug preprocessor/60975] New: a

[Bug preprocessor/60975] New: a

[bilbotheelffriend at gmail dot com]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=60975

            Bug ID: 60975
           Summary: a
           Product: gcc
           Version: 4.8.2
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: preprocessor
          Assignee: unassigned at gcc dot gnu.org
          Reporter: bilbotheelffriend at gmail dot com

[Bug preprocessor/60975] -Wvariadic-macros does not print warning

[bilbotheelffriend at gmail dot com]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=60975

Prathamesh <bilbotheelffriend at gmail dot com> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |bilbotheelffriend at gmail dot com

--- Comment #1 from Prathamesh <bilbotheelffriend at gmail dot com> ---
Created attachment 32685
  --> http://gcc.gnu.org/bugzilla/attachment.cgi?id=32685&action=edit
patch to resolve bug

[Bug preprocessor/60975] -Wvariadic-macros does not print warning

[bilbotheelffriend at gmail dot com]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=60975

Prathamesh <bilbotheelffriend at gmail dot com> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |manu at gcc dot gnu.org
           Severity|normal                      |minor

[Bug preprocessor/60975] -Wvariadic-macros does not print warning

[bilbotheelffriend at gmail dot com]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=60975

--- Comment #2 from Prathamesh <bilbotheelffriend at gmail dot com> ---
Hi,
Consider the following test-case:
#define FOO(a...)

When compiled with: gcc -E -Wpedantic
the following warning gets printed:
empty-arg.c:1:14: warning: ISO C does not permit named variadic macros
[-Wvariadic-macros]
 #define FOO(a...)
                     ^
However If I only pass -Wvariadic-macros, the warning is not printed.
For example:
gcc -E -Wvariadic-macros
and neither does gcc -E -Wvariadic-macros -std=c90
Is that intended ?

Tested on gcc-4.8.2

gcc -v:
Using built-in specs.
COLLECT_GCC=gcc
COLLECT_LTO_WRAPPER=/usr/lib/gcc/x86_64-linux-gnu/4.8/lto-wrapper
Target: x86_64-linux-gnu
Configured with: ../src/configure -v --with-pkgversion='Ubuntu
4.8.2-19ubuntu1'
--with-bugurl=file:///usr/share/doc/gcc-4.8/README.Bugs
--enable-languages=c,c++,java,go,d,fortran,objc,obj-c++ --prefix=/usr
--program-suffix=-4.8 --enable-shared --enable-linker-build-id
--libexecdir=/usr/lib --without-included-gettext
--enable-threads=posix --with-gxx-include-dir=/usr/include/c++/4.8
--libdir=/usr/lib --enable-nls --with-sysroot=/ --enable-clocale=gnu
--enable-libstdcxx-debug --enable-libstdcxx-time=yes
--enable-gnu-unique-object --disable-libmudflap --enable-plugin
--with-system-zlib --disable-browser-plugin --enable-java-awt=gtk
--enable-gtk-cairo
--with-java-home=/usr/lib/jvm/java-1.5.0-gcj-4.8-amd64/jre
--enable-java-home
--with-jvm-root-dir=/usr/lib/jvm/java-1.5.0-gcj-4.8-amd64
--with-jvm-jar-dir=/usr/lib/jvm-exports/java-1.5.0-gcj-4.8-amd64
--with-arch-directory=amd64
--with-ecj-jar=/usr/share/java/eclipse-ecj.jar --enable-objc-gc
--enable-multiarch --disable-werror --with-arch-32=i686 --with-abi=m64
--with-multilib-list=m32,m64,mx32 --with-tune=generic
--enable-checking=release --build=x86_64-linux-gnu
--host=x86_64-linux-gnu --target=x86_64-linux-gnu
Thread model: posix
gcc version 4.8.2 (Ubuntu 4.8.2-19ubuntu1)

[Bug preprocessor/60975] -Wvariadic-macros does not print warning

[rguenth at gcc dot gnu.org]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=60975

--- Comment #3 from Richard Biener <rguenth at gcc dot gnu.org> ---
Please send patches to gcc-patches@gcc.gnu.org and specify how you tested it
"Bootstrapped and tested on ....".