[Bug build/31928] New: glibc doesn't compile if the compiler already define _FORTIFY_SOURCE

[simon.chopin at canonical dot com]

https://sourceware.org/bugzilla/show_bug.cgi?id=31928

            Bug ID: 31928
           Summary: glibc doesn't compile if the compiler already define
                    _FORTIFY_SOURCE
           Product: glibc
           Version: 2.39
            Status: UNCONFIRMED
          Severity: normal
          Priority: P2
         Component: build
          Assignee: unassigned at sourceware dot org
          Reporter: simon.chopin at canonical dot com
                CC: carlos at redhat dot com
  Target Milestone: ---

In Ubuntu, GCC has been modified to define _FORTIFY_SOURCE in the preprocessor
driver, resulting in failures to build glibc, with the following error (with
--disable-werror):

syslog.c: In function ‘__vsyslog_internal’:
syslog.c:95:30: error: inlining failed in call to ‘always_inline’ ‘syslog’:
function not inlinable
   95 | ldbl_strong_alias (__syslog, syslog)

We're shipping a patch to adress this in 2.39, I still need to rebase it and
clean it up:

https://git.launchpad.net/~ubuntu-core-dev/ubuntu/+source/glibc/tree/debian/patches/ubuntu/fix-fortify-source.patch

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