* sysdeps/generic/dl-environ.c (unsetenv): Rewritten using strncmp,

no longer wrongly matches arbitrary prefixes of NAME.
	Reported by Jakub Jelinek <jakub@redhat.com>.

2002-09-11  Jakub Jelinek  <jakub@redhat.com>

	* posix/bug-regex11.c (tests): New array.
	(main): Rewritten to run more different tests.

	* nscd/Makefile (CPPFLAGS-nscd, CPPFLAGS-nscd_conf, CPPFLAGS-dbg_log)
	(CPPFLAGS-connections, CPPFLAGS-hstcache): Variables removed.
	Instead, catch all of $(nscd-modules) via cppflags-iterator.mk.

ChangeLog

@@ -1,5 +1,20 @@
+2002-09-11  Roland McGrath  <roland@redhat.com>
+
+	* sysdeps/generic/dl-environ.c (unsetenv): Rewritten using strncmp,
+	no longer wrongly matches arbitrary prefixes of NAME.
+	Reported by Jakub Jelinek <jakub@redhat.com>.
+
+2002-09-11  Jakub Jelinek  <jakub@redhat.com>
+
+	* posix/bug-regex11.c (tests): New array.
+	(main): Rewritten to run more different tests.
+
 2002-09-10  Roland McGrath  <roland@redhat.com>
 
+	* nscd/Makefile (CPPFLAGS-nscd, CPPFLAGS-nscd_conf, CPPFLAGS-dbg_log)
+	(CPPFLAGS-connections, CPPFLAGS-hstcache): Variables removed.
+	Instead, catch all of $(nscd-modules) via cppflags-iterator.mk.
+
 	* sysdeps/powerpc/fpu/s_isnan.c: Do macro hackery on __GI___isnanf as
 	well so we don't get it declared by include/math.h's hidden_proto.
 	Then do hidden_proto for __isnanf locally so hidden_def works right.

nscd/Makefile

@@ -53,11 +53,10 @@ distribute := nscd.h nscd-client.h dbg_log.h \
 
 include ../Rules
 
-CPPFLAGS-nscd = -DNOT_IN_libc
+# This makes sure -DNOT_IN_libc is passed for all these modules.
-CPPFLAGS-nscd_conf = -DNOT_IN_libc
+cpp-srcs-left := $(nscd-modules:=.c)
-CPPFLAGS-dbg_log = -DNOT_IN_libc
+lib := nscd
-CPPFLAGS-connections = -DNOT_IN_libc
+include $(patsubst %,$(..)cppflags-iterator.mk,$(cpp-srcs-left))
-CPPFLAGS-hstcache = -DNOT_IN_libc
 
 $(objpfx)nscd: $(nscd-modules:%=$(objpfx)%.o)
 $(objpfx)nscd_nischeck: $(objpfx)nscd_nischeck.o

posix/bug-regex11.c

@@ -1,4 +1,4 @@
-/* Test for newline handling in regex.
+/* Regular expression tests.
    Copyright (C) 2002 Free Software Foundation, Inc.
    This file is part of the GNU C Library.
    Contributed by Jakub Jelinek <jakub@redhat.com>, 2002.
@@ -24,37 +24,65 @@
 #include <stdio.h>
 #include <stdlib.h>
 
+struct
+{
+  const char *pattern;
+  const char *string;
+  int nmatch;
+  regmatch_t rm[4];
+} tests[] = {
+  /* Test for newline handling in regex.  */
+  { "[^~]*~", "\nx~y", 2, { { 0, 3 }, { -1, -1 } } },
+  /* Other tests.  */
+  { ".*|\\([KIO]\\)\\([^|]*\\).*|?[KIO]", "10~.~|P|K0|I10|O16|?KSb", 3,
+    { { 0, 21 }, { 15, 16 }, { 16, 18 } } },
+  { ".*|\\([KIO]\\)\\([^|]*\\).*|?\\1", "10~.~|P|K0|I10|O16|?KSb", 3,
+    { { 0, 21 }, { 8, 9 }, { 9, 10 } } }
+};
+
 int
 main (void)
 {
   regex_t re;
-  regmatch_t rm[2];
+  regmatch_t rm[4];
-  int n;
+  int n, i, ret = 0;
 
   mtrace ();
 
-  n = regcomp (&re, "[^~]*~", 0);
+  for (i = 0; i < sizeof (tests) / sizeof (tests[0]); ++i)
-  if (n != 0)
     {
-      char buf[500];
+      n = regcomp (&re, tests[i].pattern, 0);
-      regerror (n, &re, buf, sizeof (buf));
+      if (n != 0)
-      printf ("regcomp failed: %s\n", buf);
+	{
-      exit (1);
+	  char buf[500];
-    }
+	  regerror (n, &re, buf, sizeof (buf));
+	  printf ("regcomp %d failed: %s\n", i, buf);
+	  ret = 1;
+	  continue;
+	}
 
-  if (regexec (&re, "\nx~y", 2, rm, 0))
+      if (regexec (&re, tests[i].string, tests[i].nmatch, rm, 0))
-    {
+	{
-      puts ("regexec failed");
+	  printf ("regexec %d failed\n", i);
-      exit (2);
+	  ret = 1;
-    }
+	  regfree (&re);
-  if (rm[0].rm_so != 0 || rm[0].rm_eo != 3)
+	  continue;
-    {
+	}
-      printf ("regexec match failure: %d %d\n",
-	      rm[0].rm_so, rm[0].rm_eo);
-      exit (3);
-    }
 
-  regfree (&re);
+      for (n = 0; n < tests[i].nmatch; ++n)
+	if (rm[n].rm_so != tests[i].rm[n].rm_so
+              || rm[n].rm_eo != tests[i].rm[n].rm_eo)
+	  {
+	    if (tests[i].rm[n].rm_so == -1 && tests[i].rm[n].rm_eo == -1)
+	      break;
+	    printf ("regexec match failure rm[%d] %d..%d\n",
+		    n, rm[n].rm_so, rm[n].rm_eo);
+	    ret = 1;
+	    break;
+	  }
+
+      regfree (&re);
+    }
 
   return 0;
 }

sysdeps/generic/dl-environ.c

@@ -57,30 +57,23 @@ 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] == '=')
-      size_t cnt = 0;
+      {
+	/* Found it.  Remove this pointer by moving later ones back.  */
+	char **dp = ep;
 
-      while ((*ep)[cnt] == name[cnt] && name[cnt] != '\0')
+	do
-	++cnt;
+	  dp[0] = dp[1];
-
+	while (*dp++);
-      if ((*ep)[cnt] == '=')
+	/* Continue the loop in case NAME appears again.  */
-	{
+      }
-	  /* Found it.  Remove this pointer by moving later ones to
+    else
-	     the front.  */
+      ++ep;
-	  char **dp = ep;
-
-	  do
-	    dp[0] = dp[1];
-	  while (*dp++);
-	  /* Continue the loop in case NAME appears again.  */
-	}
-      else
-	++ep;
-    }
 
   return 0;
 }