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[perl #113450] [PATCH] 126c780 cflags: clang complains a lot about -Wunused-value which are not fixable

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rurban @ cpanel . net
May 31, 2012 13:01
[perl #113450] [PATCH] 126c780 cflags: clang complains a lot about -Wunused-value which are not fixable
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# Please include the string:  [perl #113450]
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This is a bug report for perl from,
generated with the help of perlbug 1.39 running under perl 5.17.0.

>From 126c78033897e8672291fa097930f63931922102 Mon Sep 17 00:00:00 2001
From: Reini Urban <>
Date: Thu, 31 May 2012 14:58:35 -0500
Subject: [PATCH] cflags: clang complains a lot about -Wunused-value which are
 not fixable

 cflags.SH |    4 ++++
 1 file changed, 4 insertions(+)

diff --git a/cflags.SH b/cflags.SH
index f57cf2f..ac03b85 100755
--- a/cflags.SH
+++ b/cflags.SH
@@ -337,6 +337,10 @@ for file do
     cppflags=`echo $cppflags|sed 's/-Wdeclaration-after-statement/ /'`
     case "$cc" in
+    *clang)
+      # clang complains a lot about -Wunused-value which are not fixable
+      warn="$warn -Wno-unused-value"
+      ;;
       # Without -Wno-unused-variable g++ 4.x compiles are rather unwatchable
       # because of all the warnings about Perl___notused, and g++ doesn't do

Site configuration information for perl 5.17.0:

Configured by rurban at Tue May 29 09:27:49 CDT 2012.

Summary of my perl5 (revision 5 version 17 subversion 0) configuration:
  Commit id: 0e43c7fdc6d8aabdb55c0d58b87ede9788ef7992
    osname=linux, osvers=3.2.0-2-amd64, archname=x86_64-linux-thread-multi-debug@642ef7c1
    uname='linux reini 3.2.0-2-amd64 #1 smp tue mar 20 18:36:37 utc 2012 x86_64 gnulinux '
    config_args='-de -Dusedevel -Dinstallman1dir=none -Dinstallman3dir=none -Dinstallsiteman1dir=none -Dinstallsiteman3dir=none -Dmksymlinks -DEBUGGING -Doptimize=-g3 -Duseithreads -Accflags='-msse4.2' -Accflags='-march=corei7' -Dcf_email='' -Dperladmin='' -Duseshrplib'
    hint=recommended, useposix=true, d_sigaction=define
    useithreads=define, usemultiplicity=define
    useperlio=define, d_sfio=undef, uselargefiles=define, usesocks=undef
    use64bitint=define, use64bitall=define, uselongdouble=undef
    usemymalloc=n, bincompat5005=undef
    cc='cc', ccflags ='-D_REENTRANT -D_GNU_SOURCE -msse4.2 -march=corei7 -DDEBUGGING -fno-strict-aliasing -pipe -fstack-protector -I/usr/local/include -D_LARGEFILE_SOURCE -D_FILE_OFFSET_BITS=64',
    cppflags='-D_REENTRANT -D_GNU_SOURCE -msse4.2 -march=corei7 -DDEBUGGING -fno-strict-aliasing -pipe -fstack-protector -I/usr/local/include'
    ccversion='', gccversion='4.6.3', gccosandvers=''
    intsize=4, longsize=8, ptrsize=8, doublesize=8, byteorder=12345678
    d_longlong=define, longlongsize=8, d_longdbl=define, longdblsize=16
    ivtype='long', ivsize=8, nvtype='double', nvsize=8, Off_t='off_t', lseeksize=8
    alignbytes=8, prototype=define
  Linker and Libraries:
    ld='cc', ldflags =' -fstack-protector -L/usr/local/lib'
    libpth=/usr/local/lib /lib/x86_64-linux-gnu /lib/../lib /usr/lib/x86_64-linux-gnu /usr/lib/../lib /lib /usr/lib
    libs=-lnsl -lgdbm -ldb -ldl -lm -lcrypt -lutil -lpthread -lc -lgdbm_compat
    perllibs=-lnsl -ldl -lm -lcrypt -lutil -lpthread -lc
    libc=, so=so, useshrplib=true,
  Dynamic Linking:
    dlsrc=dl_dlopen.xs, dlext=so, d_dlsymun=undef, ccdlflags='-Wl,-E -Wl,-rpath,/usr/local/lib/perl5/5.17.0/x86_64-linux-thread-multi-debug@642ef7c1/CORE'
    cccdlflags='-fPIC', lddlflags='-shared -g3 -L/usr/local/lib -fstack-protector'

Locally applied patches:

@INC for perl 5.17.0:

Environment for perl 5.17.0:
    LANGUAGE (unset)
    LD_LIBRARY_PATH (unset)
    LOGDIR (unset)
    PERL_BADLANG (unset)

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