Bug 1418446

Summary: vnmul, and fnmul patterns in correct for -frounding-math
Product: Red Hat Enterprise Linux 7 Reporter: Carlos O'Donell <codonell>
Component: gccAssignee: Jakub Jelinek <jakub>
Status: CLOSED ERRATA QA Contact: Michael Petlan <mpetlan>
Severity: unspecified Docs Contact:
Priority: unspecified    
Version: 7.4CC: mcermak, mpetlan, mpolacek
Target Milestone: rc   
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Hardware: Unspecified   
OS: Unspecified   
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Fixed In Version: gcc-4.8.5-12.el7 Doc Type: If docs needed, set a value
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Last Closed: 2017-08-01 22:35:59 UTC Type: Bug
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oVirt Team: --- RHEL 7.3 requirements from Atomic Host:
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Description Carlos O'Donell 2017-02-01 21:08:35 UTC 
The glibc upstream regression testsuite run on RHEL7 shows failures in tgamma_upward.

testing float (without inline functions)
Failure: tgamma_upward (-0x1.86a08p+16): errno set to 0, expected 34 (ERANGE)
Failure: tgamma_upward (-0x1.f40002p+8): errno set to 0, expected 34 (ERANGE)
Failure: tgamma_upward (-0x2.a00004p+4): errno set to 0, expected 34 (ERANGE)
Failure: tgamma_upward (-0x2.ee0004p+8): errno set to 0, expected 34 (ERANGE)
Failure: tgamma_upward (-0x3.200004p+4): errno set to 0, expected 34 (ERANGE)
Failure: tgamma_upward (-0x3.e80004p+8): errno set to 0, expected 34 (ERANGE)
Failure: tgamma_upward (-0x4.e20008p+8): errno set to 0, expected 34 (ERANGE)
Failure: tgamma_upward (-0x5.dc0008p+8): errno set to 0, expected 34 (ERANGE)
Failure: tgamma_upward (-0x5.f0e02p+8): errno set to 0, expected 34 (ERANGE)
Failure: tgamma_upward (-0x6.400008p+4): errno set to 0, expected 34 (ERANGE)
Failure: tgamma_upward (-0x6.d60008p+8): errno set to 0, expected 34 (ERANGE)
Failure: tgamma_upward (-0x6.e2fff8p+8): errno set to 0, expected 34 (ERANGE)
Failure: tgamma_upward (-0x6.e40008p+8): errno set to 0, expected 34 (ERANGE)
Failure: tgamma_upward (-0x6.e4fff8p+8): errno set to 0, expected 34 (ERANGE)
Failure: tgamma_upward (-0x6.e60008p+8): errno set to 0, expected 34 (ERANGE)
Failure: tgamma_upward (-0x6.ec0008p+8): errno set to 0, expected 34 (ERANGE)
Failure: tgamma_upward (-0x6.ecfff8p+8): errno set to 0, expected 34 (ERANGE)
Failure: tgamma_upward (-0x6.ee0008p+8): errno set to 0, expected 34 (ERANGE)
Failure: tgamma_upward (-0x6.eefff8p+8): errno set to 0, expected 34 (ERANGE)
Failure: tgamma_upward (-0x9.60001p+4): errno set to 0, expected 34 (ERANGE)
Failure: tgamma_upward (-0xa.c0001p+4): errno set to 0, expected 34 (ERANGE)
Failure: tgamma_upward (-0xb.4ffffp+4): errno set to 0, expected 34 (ERANGE)
Failure: tgamma_upward (-0xb.60001p+4): errno set to 0, expected 34 (ERANGE)
Failure: tgamma_upward (-0xb.6ffffp+4): errno set to 0, expected 34 (ERANGE)
Failure: tgamma_upward (-0xb.80001p+4): errno set to 0, expected 34 (ERANGE)
Failure: tgamma_upward (-0xb.c0001p+4): errno set to 0, expected 34 (ERANGE)
Failure: tgamma_upward (-0xb.cffffp+4): errno set to 0, expected 34 (ERANGE)
Failure: tgamma_upward (-0xb.e0001p+4): errno set to 0, expected 34 (ERANGE)
Failure: tgamma_upward (-0xb.effffp+4): errno set to 0, expected 34 (ERANGE)
Failure: tgamma_upward (-0xf.a0001p+4): errno set to 0, expected 34 (ERANGE)

This is because gcc PR/66731 is not fixed in RHEL7 system gcc.

"Bug 66731 - vnmul, fnmul patterns incorrect for -frounding-math "
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=66731
Comment 4 Michael Petlan 2017-05-31 14:14:51 UTC 
The related test passes on aarch64 with gcc-4.8.5-14.el7. The test is for aarch64 only.

VERIFIED.
Comment 5 errata-xmlrpc 2017-08-01 22:35:59 UTC 
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://access.redhat.com/errata/RHBA-2017:2094