This bug was fixed in the package gcc-7 - 7.4.0-1ubuntu1~18.04

---------------
gcc-7 (7.4.0-1ubuntu1~18.04) bionic-proposed; urgency=medium

  * SRU: LP: #1814369.
  * Fix target/88856, taken from the gcc-7-branch. LP: #1815057.
  * Fix PR tree-optimization/89505, taken from the gcc-8 branch.

gcc-7 (7.4.0-1ubuntu1) disco; urgency=medium

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

gcc-7 (7.4.0-1) unstable; urgency=medium

  * GCC 7.4.0 release.
  * Back-out the gcc-search-prefixed-as-ld patch. See #915194.

gcc-7 (7.3.0-31ubuntu1) disco; urgency=medium

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

gcc-7 (7.3.0-31) unstable; urgency=medium

  * GCC 7.4.0 release candidate 1.
  * Update to SVN 20181129 (r266612) from the gcc-7-branch.
    - Fix PR libstdc++/88199, PR libstdc++/87822, PR tree-optimization/79351,
      PR bootstrap/81033, PR target/81733, PR target/52795,
      PR middle-end/87645, PR middle-end/87610, PR tree-optimization/87665,
      PR tree-optimization/87745, PR tree-optimization/87665,
      PR middle-end/86139, PR middle-end/86076, PR target/88051 (x86),
      PR target/82961, PR target/87867 (ARM), PR tree-optimization/84777,
      PR rtl-optimization/84003, PR target/87853 (x86), PR target/87928 (x86),
      PR rtl-optimization/85925, PR debug/88006, PR debug/87462,
      PR middle-end/58372, PR c++/84281, PR c++/87075, PR fortran/88073,
      PR fortran/88143, PR fortran/87597.
  * Backport the libstdc++ mersenne twister optimization for AArch64, so that
    the random header is the same on all architectures (Ubuntu only).
    LP: #1799955.
  * Fix VCS attribute in the control file. Addresses: #912405.

gcc-7 (7.3.0-30ubuntu1) disco; urgency=medium

  * Backport the libstdc++ mersenne twister optimization for AArch64, so that
    the random header is the same on all architectures (Ubuntu only).
    LP: #1799955.

gcc-7 (7.3.0-30) unstable; urgency=medium

  * Update to SVN 20181030 (r265622) from the gcc-7-branch.
    - Fix PR middle-end/86542, PR middle-end/86539, PR middle-end/86660,
      PR libstdc++/87749, PR libstdc++/87704, PR libstdc++/79433,
      PR libstdc++/87641, PR libstdc++/86751, PR libstdc++/78595,
      PR libstdc++/87061, PR libstdc++/70966, PR libstdc++/77854,
      PR libstdc++/87538, PR tree-optimization/87473, PR middle-end/87623,
      PR target/87511 (AArch64), PR target/87550 (x86), PR middle-end/87248,
      PR rtl-optimization/87065, PR middle-end/86627, PR middle-end/86542,
      PR middle-end/86539, PR middle-end/86660, PR middle-end/87024,
      PR middle-end/86505, PR target/87370 (x86), PR target/87517 (x86),
      PR target/87522 (x86), PR other/87353, PR target/87467 (x86),
      PR target/87033 (PPC), PR debug/86687, PR c++/3698, PR c++/86208,
      PR fortran/86421.
  * Don't configure native builds with --with-sysroot. Apparently this cannot
    be completely overridden with the command line option --sysroot.
  * Update VCS attributes in the control file.

gcc-7 (7.3.0-29) unstable; urgency=medium

  * Update to SVN 20180904 (r264075) from the gcc-7-branch.
    - Fix PR sanitizer/86022, PR tree-optimization/85859, PR target/86662,
      PR target/87014 (x86), PR c++/86763.

gcc-7 (7.3.0-28ubuntu1) cosmic; urgency=medium

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

gcc-7 (7.3.0-28) unstable; urgency=medium

  * Update to SVN 20180814 (r264534) from the gcc-7-branch.
    - Fix PR libstdc++/86138, PR libstdc++/85672, PR libstdc++/84654,
      PR libstdc++/80893, PR libstdc++/80893, PR libstdc++/68519,
      PR libstdc++/86292, PR libstdc++/60555, PR libstdc++/86861,
      PR libstdc++/86734, PR rtl-optimization/85645, PR rtl-optimization/85645,
      PR target/86197 (PPC), PR middle-end/86705, PR c++/86728.
    - Fix PR bootstrap/86724. Closes: #905539.

  [ Matthias Klose ]
  * Add some basic autopkg tests for Ada, C, C++, Go, OpenMP and Fortran.
  * Build again using gnat-7.

  [ Nicolas Boulenguez ]
  * gnat: Improve the ada-gcc-name patch.

gcc-7 (7.3.0-27ubuntu1) cosmic; urgency=medium

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

 -- Matthias Klose <email address hidden>  Mon, 01 Apr 2019 09:44:57 +0200