[Bug 1759369] Re: kernel build fails on arm64

[Launchpad Bug Tracker]

This bug was fixed in the package gcc-7-cross - 20ubuntu3

---------------
gcc-7-cross (20ubuntu3) bionic; urgency=medium

  * Build using 7.3.0-16ubuntu1.
  * Backport r251558 from the trunk, addresses Linaro #3718. LP: #1759369.

 -- Matthias Klose <doko at ubuntu.com>  Wed, 11 Apr 2018 22:29:32 +0200

** Changed in: gcc-7-cross (Ubuntu)
       Status: Confirmed => Fix Released

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Title:
  kernel build fails on arm64

Status in Linaro GCC:
  New
Status in gcc-7 package in Ubuntu:
  Fix Released
Status in gcc-7-cross package in Ubuntu:
  Fix Released

Bug description:
  After upgrading gcc-7-aarch64-linux-gnu from (7.3.0-12ubuntu1cross1)
  to (7.3.0-11ubuntu1cross1), we get:

  
  In file included from lib/raid6/recov_neon_inner.c:11:0:
  /usr/lib/gcc-cross/aarch64-linux-gnu/7/include/arm_neon.h: In function ‘vdot_lane_u32’:
  /usr/lib/gcc-cross/aarch64-linux-gnu/7/include/arm_neon.h:31581:10: error: incompatible types when returning type ‘int’ but ‘uint32x2_t’ was expected
     return __builtin_aarch64_udot_lanev8qi_uuuus (__r, __a, __b, __index);
            ^
  /usr/lib/gcc-cross/aarch64-linux-gnu/7/include/arm_neon.h: In function ‘vdot_laneq_u32’:
  /usr/lib/gcc-cross/aarch64-linux-gnu/7/include/arm_neon.h:31589:10: error: incompatible types when returning type ‘int’ but ‘uint32x2_t’ was expected
     return __builtin_aarch64_udot_laneqv8qi_uuuus (__r, __a, __b, __index);
            ^
  /usr/lib/gcc-cross/aarch64-linux-gnu/7/include/arm_neon.h: In function ‘vdotq_lane_u32’:
  /usr/lib/gcc-cross/aarch64-linux-gnu/7/include/arm_neon.h:31597:10: error: incompatible types when returning type ‘int’ but ‘uint32x4_t’ was expected
     return __builtin_aarch64_udot_lanev16qi_uuuus (__r, __a, __b, __index);
            ^
  /usr/lib/gcc-cross/aarch64-linux-gnu/7/include/arm_neon.h: In function ‘vdotq_laneq_u32’:
  /usr/lib/gcc-cross/aarch64-linux-gnu/7/include/arm_neon.h:31605:10: error: incompatible types when returning type ‘int’ but ‘uint32x4_t’ was expected
     return __builtin_aarch64_udot_laneqv16qi_uuuus (__r, __a, __b, __index);
            ^
  scripts/Makefile.build:324: recipe for target 'lib/raid6/recov_neon_inner.o' failed
  make[2]: *** [lib/raid6/recov_neon_inner.o] Error 1

  Cascardo.

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