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authorEric Blake <ebb9@byu.net>2010-04-07 17:16:27 -0700
committerPetr Baudis <pasky@ucw.cz>2010-05-12 03:21:14 +0200
commit443a33d8042f4084d4d1f40a5b973a19bcae9a23 (patch)
treec717feeb87e39185ba23667f73b169cb08833e9a
parent52ade99fe57673eccffbcd71dea61692c424930d (diff)
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Fix -W with optional parameters in getopt.
According to the getopt documentation, if "W;" is part of optstring, then '-W
foo' should behave like '--foo'.  But if "foo" uses an optional_argument, this
is not the case, since optarg is not NULL when using -W.

(cherry picked from commit aa7f642769abcfbce658aeaaffdc9fb4790cd905)
-rw-r--r--ChangeLog6
-rw-r--r--posix/getopt.c7
2 files changed, 12 insertions, 1 deletions
diff --git a/ChangeLog b/ChangeLog
index 6df5c047f7..9e247e87df 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,9 @@
+2009-12-02  Eric Blake	<ebb9@byu.net>
+
+	[BZ #11041]
+	* posix/getopt.c (_getopt_internal_r): Handle '-Wfoo' identically
+	to '--foo', with optional argument or non-ambiguous prefix.
+
 2010-04-05  Ulrich Drepper  <drepper@redhat.com>
 
 	[BZ #11010]
diff --git a/posix/getopt.c b/posix/getopt.c
index 88acff0e2f..01c1071ecb 100644
--- a/posix/getopt.c
+++ b/posix/getopt.c
@@ -911,7 +911,10 @@ _getopt_internal_r (int argc, char *const *argv, const char *optstring,
 		  pfound = p;
 		  indfound = option_index;
 		}
-	      else
+	      else if (long_only
+		       || pfound->has_arg != p->has_arg
+		       || pfound->flag != p->flag
+		       || pfound->val != p->val)
 		/* Second or later nonexact match found.  */
 		ambig = 1;
 	    }
@@ -1028,6 +1031,8 @@ _getopt_internal_r (int argc, char *const *argv, const char *optstring,
 		    return optstring[0] == ':' ? ':' : '?';
 		  }
 	      }
+	    else
+	      d->optarg = NULL;
 	    d->__nextchar += strlen (d->__nextchar);
 	    if (longind != NULL)
 	      *longind = option_index;