[Bug 1867316] Re: Almost global FTFBS due to dropping include-fixed dir in 9.3.0-1

[Mathew Hodson]

gcc-9 (9.3.0-3ubuntu1) focal; urgency=medium

  * Merge with Debian; remaining changes:
    - Build from upstream sources.
    - Disable the LTO build on arm64, armhf for now, takes 24+ hours ...

gcc-9 (9.3.0-3) unstable; urgency=high

  * Ship the include-fixed directory again, for a working #include <limits.h>.
  * Build using GCC 8.

gcc-9 (9.3.0-1) unstable; urgency=medium

  * GCC 9.3.0 release.
  * Update newlib to 3.3.0.
  * Update gm2 from the gcc_9_2_0_gm2 branch 202003114.
  * For all runtime libraries, generate dependencies on libgcc-sN instead
    on libgccN.
  * Stop shipping the include-fixed directory.
  * Refresh patches.
  * Tighten dependency on libc6 for this upload.

 -- Matthias Klose <doko at ubuntu.com>  Fri, 13 Mar 2020 10:30:38 +0100

** No longer affects: chrony (Ubuntu)

** No longer affects: glibc (Ubuntu)

** No longer affects: linux (Ubuntu)

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https://bugs.launchpad.net/bugs/1867316

Title:
  Almost global FTFBS due to dropping include-fixed dir in 9.3.0-1

Status in gcc-9 package in Ubuntu:
  Fix Released

Bug description:
  This seems an almost global FTBFS with anything that includes limits.h

  $ cat > test.c << EOF
  > /*
  > * Test FTBFS 1867316
  > */
  >
  > #include <limits.h>
  > EOF
  ubuntu at focal-ftbfs:~/chrony-3.5$ gcc -c test.c
  In file included from test.c:5:
  /usr/include/limits.h:124:26: error: no include path in which to search for limits.h
    124 | # include_next <limits.h>
        | ^

  Interestingly this fails on armhf/ppc64/s390x but works on x86.

  
  --- started as a chrony FTBFS despite tetsing a few hours before ---

  For bug 1866753 we built this yesterday in a proposed PPA and things worked!
  Now today on the final upload it failed to build on armhf/ppc64/s390x.

  In file included from /usr/include/powerpc64le-linux-gnu/sys/param.h:26,
                   from /usr/include/resolv.h:56,
                   from nameserv.c:34:
  /usr/include/limits.h:124:26: error: no include path in which to search for limits.h
    124 | # include_next <limits.h>
        |                          ^
  make[1]: *** [Makefile:108: nameserv.o] Error 1

  The same error on all of them.

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