[Bug 1016349] Re: htons() returns wrong type on non-{i386, amd64} platforms

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On 2012-06-21T21:54:09+00:00 Alex wrote:

glibc fixed a bug in 2010 in which htons() would give a conversion
warning when compiled with -Wconversion due to the implementation of the
byte-swapping functions. Unfortunately, this fix was only for x86/x86_64
platforms. The fix has now been updated to include the generic byteswap
functions.

Please apply this patch to the glibc in Fedora.

For reference, please see
http://sourceware.org/bugzilla/show_bug.cgi?id=12194

Reply at:
https://bugs.launchpad.net/ubuntu/+source/eglibc/+bug/1016349/comments/5

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On 2012-06-21T22:02:51+00:00 Alex wrote:

*** Bug 834449 has been marked as a duplicate of this bug. ***

Reply at:
https://bugs.launchpad.net/ubuntu/+source/eglibc/+bug/1016349/comments/6

------------------------------------------------------------------------
On 2012-06-21T22:09:52+00:00 Alex wrote:

*** Bug 834450 has been marked as a duplicate of this bug. ***

Reply at:
https://bugs.launchpad.net/ubuntu/+source/eglibc/+bug/1016349/comments/7

------------------------------------------------------------------------
On 2012-06-21T23:29:54+00:00 Jeff wrote:

I just resynced with the upstream sources which include a fix for this
problem.

Reply at:
https://bugs.launchpad.net/ubuntu/+source/eglibc/+bug/1016349/comments/8


** Changed in: glibc (Fedora)
       Status: Unknown => Fix Released

** Changed in: glibc (Fedora)
   Importance: Unknown => Medium

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https://bugs.launchpad.net/bugs/1016349

Title:
  htons() returns wrong type on non-{i386,amd64} platforms

Status in eglibc:
  Fix Released
Status in eglibc package in Ubuntu:
  Fix Released
Status in eglibc source package in Precise:
  Fix Released
Status in glibc package in Fedora:
  Fix Released

Bug description:
  [Impact]
  htons() on non x86 platforms is missing a cast to uint16_t which causes FTBFS of mosh on armel and armhf.

  [Development Fix]
  This has been fixed in eglibc in Quantal.

  [Stable Fix]
  A fix can be backported from the Quantal development version into Precise.

  [Test Case]
  See https://bugs.launchpad.net/ubuntu/+source/eglibc/+bug/1016349/comments/2
  On how to reproduce with a C program.

  [Regression Potential]
  This patch affects some of the generic byteswaping code in eglibc. The fix for x86 arches was already completed years ago, and this patch fixes is for other arches.

  --

  The definition of htons() on platforms other than i386 and amd64 is
  missing a cast to uint16_t, which caused this FTBFS of mosh on armel
  and armhf:

  https://launchpad.net/ubuntu/+source/mosh/1.2.1-1ubuntu1/+build/3582950
  network.cc:76:28: error: narrowing conversion of '({...})' from 'unsigned int' to 'uint16_t {aka short unsigned int}' inside { } is ill-formed in C++11 [-Werror=narrowing]
  network.cc:76:50: error: narrowing conversion of '({...})' from 'unsigned int' to 'uint16_t {aka short unsigned int}' inside { } is ill-formed in C++11 [-Werror=narrowing]

  (We didn’t see this before because this warning is new in GCC 4.7.)

  This was fixed for glibc 2.16 in
  http://sourceware.org/git/?p=glibc.git;a=commitdiff;h=2174c6dd8555f654c30df2f8f3321b69e0f736f8

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