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[binutils-gdb] libiberty: fix warnings about left shifting a negative value.
- From: sergiodj+buildbot at redhat dot com
- To: gdb-testers at sourceware dot org
- Date: Tue, 05 Jan 2016 17:21:43 -0500
- Subject: [binutils-gdb] libiberty: fix warnings about left shifting a negative value.
- Authentication-results: sourceware.org; auth=none
*** TEST RESULTS FOR COMMIT 13b356b2b5c1857490b7911dbbb48e17a3a92b04 ***
Author: Nick Clifton <nickc@redhat.com>
Branch: master
Commit: 13b356b2b5c1857490b7911dbbb48e17a3a92b04
libiberty: fix warnings about left shifting a negative value.
GCC PR 66827 reports some problems with left shifting a negative
value:
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=66827
Of the problems reported only two remain - in libiberty/regex.c:
libiberty/regex.c:6970:11: runtime error: left shift of negative value -1
libiberty/regex.c:7165:4: runtime error: left shift of negative value -1
The patch below fixes these errors by casting the value to be shifted
to unsigned before the shift occurs.
No regressions were found in the libiberty testsuite or bootstrapping
gcc (on an x86_64 target).
- Follow-Ups:
- Failures on RHEL-s390x-m64, branch master
- Failures on Debian-s390x-native-gdbserver-m64, branch master
- Failures on Fedora-i686, branch master
- Failures on Debian-s390x-m64, branch master
- Failures on Fedora-x86_64-m32, branch master
- Failures on Fedora-x86_64-native-extended-gdbserver-m32, branch master
- Failures on Fedora-x86_64-cc-with-index, branch master
- Failures on Debian-s390x-native-extended-gdbserver-m64, branch master
- Failures on Fedora-x86_64-native-extended-gdbserver-m64, branch master
- Failures on Fedora-s390x-m64, branch master
- Failures on Fedora-x86_64-native-gdbserver-m32, branch master
- Failures on AIX-POWER7-plain, branch master
- Failures on Fedora-x86_64-m64, branch master
- Failures on Debian-i686, branch master
- Failures on Debian-i686-native-gdbserver, branch master
- Failures on Debian-i686-native-extended-gdbserver, branch master
- Failures on Fedora-ppc64be-cc-with-index, branch master
- Failures on Fedora-ppc64be-m64, branch master
- Failures on Fedora-ppc64be-native-gdbserver-m64, branch master
- Failures on Fedora-ppc64be-native-extended-gdbserver-m64, branch master
- Failures on Fedora-ppc64le-native-gdbserver-m64, branch master
- Failures on Fedora-ppc64le-m64, branch master