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To reproduce, i.e. try to compile php 5.5 with -flto. Gives:
/usr/include/bits/unistd.h:34:1: error: inlining failed in call to always_inline 'read': recursive inlining
read (int __fd, void *__buf, size_t __nbytes)
A known bug. More details here:
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=59626
Please include the fix into the GCC update.
Richard Biener attached a backport to the upstream PR. I'd like to make sure it fixes this bug, but To reproduce, i.e. try to compile php 5.5 with -flto. Gives:
is too vague. Do you e.g. have a src.rpm that fails to build with RHEL 7.1 gcc that I could try with the unpatched and patched compiler? Or just detailed instructions on what exactly you do to trigger it?
I have attached .spec that is failing. It requires nothing except php 5.5.20 source and its compile dependencies (not exactly written in .spec). If you don't have some deps, just disable them in configure options, it will fail nevertheless.
Since the problem described in this bug report should be
resolved in a recent advisory, it has been closed with a
resolution of ERRATA.
For information on the advisory, and where to find the updated
files, follow the link below.
If the solution does not work for you, open a new bug report.
https://rhn.redhat.com/errata/RHBA-2015-2080.html