This bug was fixed in the package gcc-4.9 - 4.9.2-16ubuntu1

---------------
gcc-4.9 (4.9.2-16ubuntu1) wily; urgency=medium

  * Update to SVN 20150508 (r222909) from the gcc-4_9-branch.

gcc-4.9 (4.9.2-16) unstable; urgency=medium

  * Update to SVN 20150503 (r222750) from the gcc-4_9-branch.
    - Fix the build failure on alpha.
  * Fix gcc-itm doc-base file (Guo Yixuan). Closes: #783998.
  * On m68k, powerpcspe, sh4, sparc64, still build the libraries not
    yet built by gcc-5.
  * Update the cross-biarch patch for D and Go.
  * Apply the cross-biarch patches for every cross build. Closes: #783527.

gcc-4.9 (4.9.2-15) unstable; urgency=medium

  * Update the Linaro support to the 4.9-2015.04 release.

gcc-4.9 (4.9.2-14) unstable; urgency=medium

  * Update to SVN 20150429 (r222567) from the gcc-4_9-branch.
  * Build again libgo.
  * PR libstdc++/62258, fix for std::uncaught_exception, taken from the trunk.
    LP: #1439451.

gcc-4.9 (4.9.2-13) unstable; urgency=medium

  * Update to SVN 20150426 (r222448) from the gcc-4_9-branch.
  * Build using isl 0.14 and cloog 0.18.3.
  * Provide the /usr/include/<multiarch>/c++/<gcc version> symlink.

gcc-4.9 (4.9.2-12) experimental; urgency=medium

  * Stop building libcilkrts and libtsan, build again libasan.

gcc-4.9 (4.9.2-11) experimental; urgency=medium

  * Update to SVN 20150411 (r222011) from the gcc-4_9-branch.
    - Fix PR libstdc++/64476, PR libstdc++/60966, PR libstdc++/64239,
      PR libstdc++/64649, PR libstdc++/64584, PR libstdc++/64585,
      PR libstdc++/64646, PR middle-end/64734, PR c/61553,
      PR middle-end/63704 (ice on valid), PR target/64513 (x86),
      PR rtl-optimization/64286 (wrong code), PR tree-optimization/64563 (ice),
      PR middle-end/64391 (ice on valid), PR c++/54442 (ice on valid),
      PR target/64358 (rs6000, wrong code), PR target/63424 (AArch64, ice on
      valid), PR target/64479 (SH), PR rtl-optimization/64536, PR target/64505
      (rs6000), PR target/61413 (ARM, wrong code), PR target/64507 (SH),
      PR target/64409 (x32, ice on valid), PR c++/64487 (ice on valid),
      PR c++/64352, PR c++/64251 (rejects valid), PR c++/64297 (ice on valid),
      PR c++/64029 (ice on valid), PR c++/63657 (diagnostic), PR c++/38958
      (diagnostic), PR c++/63658 (rejects valid), PR ada/64492 (build),
      PR fortran/64528 (ice on valid), PR fortran/63733 (wrong code),
      PR fortran/56867 (wrong code), PR fortran/64244 (ice on valid),
      PR target/64795 (x86), PR middle-end/64734 (ice),
      PR rtl-optimization/64557, PR ipa/63970 (missed optimization),
      PR fortran/64230 (wrong code), PR fortran/64771 (ice on valid),
      PR fortran/57023 (wrong code), PR fortran/60922 (wrong code), PR c/64766
      (ice), PR c/64778 (ice), PR rtl-optimization/61058 (ice),
      PR middle-end/64421 (OpenMP), PR rtl-optimization/63637,
      PR rtl-optimization/60663 (error on valid asm),  PR debug/64511 (ice),
      PR debug/64663 (ice), PR c++/64521 (ice), PR fortran/62044 (ice),
      PR libstdc++/64680, PR libstdc++/64649, PR target/64882 (x86),
      PR c++/64901, PR target/64938 (ICE, ARM), PR ipa/64068, PR ipa/64559,
      PR c/64824 (OpenMP), PR c/64868 (OpenMP, rejects valid), PR c/57653,
      PR target/65153 (SH), PR lto/65015 (closes: #777753, #780000),
      (SH), PR tree-optimization/63844 (OpenMP), PR tree-optimization/61634
      (ice on valid), PR tree-optimization/59354 (wrong code),
      PR tree-optimization/64909 (missed optimization), PR target/64452 (AVR,
      ice on valid), PR tree-optimization/64530 (wrong code), PR lto/64373,
      PR tree-optimization/63593 (ice on valid), PR tree-optimization/65063,
      PR middle-end/64199 (ice on valid), PR tree-optimization/64493 (ice on
      valid), PR tree-optimization/64495 (ice on valid, wrong code),
      PR tree-optimization/56273 (diagnostic), PR tree-optimization/59124
      (diagnostic), PR tree-optimization/64277 (diagnostic),
      PR middle-end/64365 (wrong code), PR target/64387 (x86, ice on valid),
      PR target/64979 (wrong code), PR target/64580 (rs6000), PR c++/62017,
      PR fortran/63744 (rejects valid), PR fortran/64932 (ice on valid),
      PR c/65228 (ice), PR middle-end/63175 (code quality), PR lto/65193 (ice),
      PR target/64569 (MIPS), PR tree-optimization/61917 (ice on valid),
      PR target/64212 (ice on valid), PR target/65196 (AVR), PR target/65163,
      PR tree-optimization/61917 (ice on valid), PR c++/62255 (rejects valid),
      PR ada/65319, PR target/59593 (ARM), PR target/65249 (SH),
      PR target/64331 (AVR), PR target/64453 (ARM), PR c++/65209 (wrong code),
      PR c++/65309 (wrong code), PR tree-optimization/65388, PR target/65296
      (AVR), PR middle-end/56917 (wrong code), PR ipa/64896 (ice),
      PR target/65286 (rs6000), PR target/53988 (SH), PR target/65286 (rs6000),
      PR 65138/target (rs6000), PR fortran/60898 (ice), PR fortran/65024 (ice),
      PR rtl-optimization/65235 (wrong code), PR fortran/61138 (wrong code),
      PR middle-end/65409 (ice on valid), PR ipa/64813 (ice),
      PR ipa/63587 (ice), PR libgfortran/60956, PR libstdc++/65279,
      PR libstdc++/65543, PR target/65561 (x86), PR target/63150 (rs6000),
      PR rtl-optimization/60851 (ice), PR c++/65154 (ice).
  * Update the Linaro support to the 4.9-2015.03 release.
  * Allow to build using gettext built with a newer GCC.
  * Fix gnat build on mips64el (James Cowgill). Addresses: #779191.
  * Fix linaro#1291, ICE (segmentation fault) on arm-linux-gnueabihf.
  * Configure with --enable-targets=powerpcle-linux on ppc64el for
    backports to jessie, trusty, utopic and vivid.
  * Limit the omp.h multilib fix to Linux. Addresses: #778440.
  * For ICEs, dump the preprocessed source file to stderr when in a
    distro build environment.
  * Apply the ada-mips patch for mips and mipsel targets only.
  * Don't build packages built by gcc-5.

 -- Matthias Klose <email address hidden>  Fri, 08 May 2015 14:42:41 +0200