* sysdeps/generic/dl-environ.c (unsetenv): Redo last fix without

	strncmp, keeps the code smaller for a non-performance-critical case.

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;
 }