[Bug 1317305] Re: -Wno-format is not honored

[Launchpad Bug Tracker]

This bug was fixed in the package gcc-4.8 - 4.8.2-23ubuntu1

---------------
gcc-4.8 (4.8.2-23ubuntu1) utopic; urgency=medium

  * Merge with Debian; remaining changes:
    - Build from the upstream source.

gcc-4.8 (4.8.2-23) unstable; urgency=medium

  * GCC 4.8.3 release candidate 1.
  * Update to SVN 20140516 (r210514) from the gcc-4_8-branch.
  * Apply the proposed patch for PR driver/61126.
  * Update the libstdc++v-python3 patch. Closes: #748317.
  * Update the gcc-default-format-security patch (Steve Beattie). LP: #1317305.

gcc-4.8 (4.8.2-22) unstable; urgency=medium

  * Update to SVN 20140508 (r210209) from the gcc-4_8-branch.
  * Install only versioned gcc-ar gcc-nm gcc-ranlib binaries for the hppa64
    cross compiler, update hppa64 alternatives. Closes: #745967.
  * Fix the as and ld symlinks for the hppa64 cross compiler.
  * Ensure that the common libs (built from the next GCC version) are
    available when building without common libs.
  * Fix java.security symlink in libgcj14. Closes: #746786.
  * Move the libstdc++ gdb pretty printers into libstdc++6, install the
    -gdb.py files into /usr/share/gdb/auto-load.
  * Set the 'Multi-Arch: same' attribute for packages, cross built with
    with_deps_on_target_arch_pkgs=yes (Helmit Grohne). Closes: #716795.
  * Build the gcc-X.Y-base package with with_deps_on_target_arch_pkgs=yes
    (Helmit Grohne). Closes: #744782.
  * Apply the proposed patch for PR driver/61106. Closes: #747345.
 -- Matthias Klose <doko at ubuntu.com>   Sun, 18 May 2014 15:20:05 +0200

** Changed in: gcc-4.8 (Ubuntu)
       Status: New => Fix Released

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https://bugs.launchpad.net/bugs/1317305

Title:
  -Wno-format is not honored

Status in “gcc-4.8” package in Ubuntu:
  Fix Released
Status in “gcc-4.9” package in Ubuntu:
  New

Bug description:
  Due to the way the gcc-default-format-security patch is implemented in
  gcc-4.8, disabling format warnings does not work:

    $ cat format-extra-args.c
    #include <stdio.h>

    /* printf extra arguments example */
    int main(void)
    {
          printf("%s\n", "argument 1", "argument 2");

          return 0;
    }
    $ gcc -Wall -O2 -o format-off format-extra-args.c -Wno-format
    format-extra-args.c: In function 'main':
    format-extra-args.c:12:2: warning: too many arguments for format [-Wformat-extra-args]
      printf("%s\n", "argument 1", "argument 2");
      ^

  Earlier versions of gcc allowed disabling warnings correctly.

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