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authorRoland McGrath <roland@gnu.org>2002-09-11 22:16:50 +0000
committerRoland McGrath <roland@gnu.org>2002-09-11 22:16:50 +0000
commit68b68cb3a475ed999d150376c32a30ed97bd6fe9 (patch)
tree7fc4fd1cbc7dd0d6aa6c1fc25315b139333faa2e /sysdeps/generic/dl-environ.c
parent0d35c2426d7a2682631da0433299e1c912f0ccfa (diff)
downloadglibc-68b68cb3a475ed999d150376c32a30ed97bd6fe9.tar.gz
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* sysdeps/generic/dl-environ.c (unsetenv): Redo last fix without
	strncmp, keeps the code smaller for a non-performance-critical case.
Diffstat (limited to 'sysdeps/generic/dl-environ.c')
-rw-r--r--sysdeps/generic/dl-environ.c33
1 files changed, 20 insertions, 13 deletions
diff --git a/sysdeps/generic/dl-environ.c b/sysdeps/generic/dl-environ.c
index 30fe5654d6..089e89e6e7 100644
--- a/sysdeps/generic/dl-environ.c
+++ b/sysdeps/generic/dl-environ.c
@@ -57,23 +57,30 @@ extern char **__environ attribute_hidden;
 int
 unsetenv (const char *name)
 {
-  const size_t len = strlen (name);
   char **ep;
 
   ep = __environ;
   while (*ep != NULL)
-    if (!strncmp (*ep, name, len) && (*ep)[len] == '=')
-      {
-	/* Found it.  Remove this pointer by moving later ones back.  */
-	char **dp = ep;
-
-	do
-	  dp[0] = dp[1];
-	while (*dp++);
-	/* Continue the loop in case NAME appears again.  */
-      }
-    else
-      ++ep;
+    {
+      size_t cnt = 0;
+
+      while ((*ep)[cnt] == name[cnt] && name[cnt] != '\0')
+	++cnt;
+
+      if (name[cnt] == '\0' && (*ep)[cnt] == '=')
+	{
+	  /* Found it.  Remove this pointer by moving later ones to
+	     the front.  */
+	  char **dp = ep;
+
+	  do
+	    dp[0] = dp[1];
+	  while (*dp++);
+	  /* Continue the loop in case NAME appears again.  */
+	}
+      else
+	++ep;
+    }
 
   return 0;
 }