[Bug regex/1217] New: regcomp.c elicits uninitialized-variable warnings with GCC 4

["eggert at gnu dot org" <sourceware-bugzilla@sources.redhat.com>]

regcomp.c contains code that elicits uninitialized-variable warnings with
GCC 4.  The problem is that GCC isn't smart enough to see that when
duplicate_node returns REG_ESPACE, the uninitialized storage is not used.
I'll attach a straightforward patch that changes the signature of
duplicate_node to avoid the warnings.  My impression is that the
patch also causes GCC to generate better code, but I haven't measured
this.

-- 
           Summary: regcomp.c elicits uninitialized-variable warnings with
                    GCC 4
           Product: glibc
           Version: 2.3.5
            Status: NEW
          Severity: minor
          Priority: P2
         Component: regex
        AssignedTo: gotom at debian dot or dot jp
        ReportedBy: eggert at gnu dot org
                CC: glibc-bugs-regex at sources dot redhat dot com,glibc-
                    bugs at sources dot redhat dot com


http://sources.redhat.com/bugzilla/show_bug.cgi?id=1217

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