[Bug middle-end/55271] New: missing warning set-but-unused

[dimhen at gmail dot com]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=55271



             Bug #: 55271

           Summary: missing warning set-but-unused

    Classification: Unclassified

           Product: gcc

           Version: 4.8.0

            Status: UNCONFIRMED

          Severity: normal

          Priority: P3

         Component: middle-end

        AssignedTo: unassig...@gcc.gnu.org

        ReportedBy: dim...@gmail.com





$ cat test.c 

void f()

{

// missing set-but-unused

    char *li = 0;

    *li = 0; // missing dereference-null ?

}

$ /usr/local/gcc_current_193387/bin/gcc -Wall -Wextra -Ofast test.c -c

$ /usr/local/gcc_current_193387/bin/gcc -v

Using built-in specs.

COLLECT_GCC=/usr/local/gcc_current_193387/bin/gcc

COLLECT_LTO_WRAPPER=/usr/local/gcc_current_193387/bin/../libexec/gcc/x86_64-unknown-linux-gnu/4.8.0/lto-wrapper

Target: x86_64-unknown-linux-gnu

Configured with: /home/dimhen/src/gcc-current/configure

--prefix=/usr/local/gcc_current --with-multilib-list=m64 --enable-__cxa_atexit

--enable-shared --enable-checking=yes,df,fold,rtl,tree

--enable-gnu-unique-object --enable-linker-build-id

--enable-languages=c,c++,lto --enable-plugin

--enable-version-specific-runtime-libs --with-tune=generic

Thread model: posix

gcc version 4.8.0 20121110 (experimental) [trunk revision 193387] (GCC)