Update.

1998-03-12 13:11  Tim Waugh  <tim@cyberelk.demon.co.uk>

	* posix/wordexp-test.c: More tests.
	(main): Set up arena for pathname expansion tests (in a temporary
	directory).
	(testit): Don't check word count or word vector if return value is
	non-zero.

	* posix/wordexp.c (exec_comm): Always chop off terminating
	linefeed (just like bash does).
	(parse_param): Change lots of occurrences of "if (!*env)" to "if
	(!env || !*env)".
	(parse_param): For assignment inside parameter expansion, use all
	expanded words in assignment rather than just the first.
	(parse_param): Corrected return value for parameter expansion of
	an unset variable when WRDE_UNDEF is in effect.
	(parse_dollars): Don't field-split if quoted.
	(wordexp): Opening brace character isn't allowed unquoted.

1998-03-12  Ulrich Drepper  <drepper@cygnus.com>

	* elf/dlerror.c: Fix concurrency problems with error string and
	number.

	* elf/dl-deps.c (_dl_map_object_deps): Print debug info when
	filter/auxiliary are being loaded.

1998-03-12 14:24  Ulrich Drepper  <drepper@cygnus.com>

	* elf/dlerror.c (last_object_name): Removed.
	(dlerror): Don't use last_object_name.
	(_dl_error_run): Omit second argument to _dl_catch_error.
	* elf/dl-error.c (struct catch): Remove objname member.
	(_dl_signal_error): Construct string including objname when given.
	(_dl_catch_error): Remove objname handling.
	* elf/link.h (_dl_catch_error): Fix prototype and comment.
	* elf/rtld.c (dl_main): Call _dl_catch_error correctly.
	* elf/dl-deps.c (_dl_map_objet_deps): Likewise.
	* nss/nsswitch.c (nss_dlerror_run): Likewise.
	* iconv/gconv_dl.c (dlerror_run): Likewise.
	[Corrects PR libc/501].

2 files changed, 112 insertions, 21 deletions

diff --git a/posix/wordexp-test.c b/posix/wordexp-test.c
index cb15fe036b..965e26be45 100644
--- a/posix/wordexp-test.c
+++ b/posix/wordexp-test.c
@@ -16,6 +16,10 @@
    write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
    Boston, MA 02111-1307, USA.  */
 
+#include <sys/stat.h>
+#include <sys/types.h>
+#include <fcntl.h>
+#include <unistd.h>
 #include <pwd.h>
 #include <stdio.h>
 #include <stdlib.h>
@@ -33,10 +37,12 @@ struct test_case_struct
   const char *wordv[10];
 } test_case[] =
   {
-    /* Simple word-splitting */
+    /* Simple field-splitting */
     { 0, NULL, "one", 0, 1, { "one", } },
     { 0, NULL, "one two", 0, 2, { "one", "two", } },
     { 0, NULL, "one two three", 0, 3, { "one", "two", "three", } },
+    { 0, NULL, " \tfoo\t\tbar ", 0, 2, { "foo", "bar", } },
+    { 0, NULL, "  red  , white blue", 0, 3, { "red", "white", "blue", } },
 
     /* Simple parameter expansion */
     { 0, "foo", "${var}", 0, 1, { "foo", } },
@@ -50,15 +56,14 @@ struct test_case_struct
     /* Simple command substitution */
     { 0, NULL, "$(echo hello)", 0, 1, { "hello", } },
     { 0, NULL, "$( (echo hello) )", 0, 1, { "hello", } },
+    { 0, NULL, "$((echo hello);(echo there))", 0, 2, { "hello", "there", } },
+    { 0, NULL, "`echo one two`", 0, 2, { "one", "two", } },
 
     /* Simple arithmetic expansion */
     { 0, NULL, "$((1 + 1))", 0, 1, { "2", } },
     { 0, NULL, "$((2-3))", 0, 1, { "-1", } },
     { 0, NULL, "$((-1))", 0, 1, { "-1", } },
-
-    /* Field splitting */
-    { 0, NULL, " \tfoo\t\tbar ", 0, 2, { "foo", "bar", } },
-    { 0, NULL, "  red  , white blue", 0, 3, { "red", "white", "blue", } },
+    { 0, NULL, "$[50+20]", 0, 1, { "70", } },
 
     /* Advanced parameter expansion */
     { 0, NULL, "${var:-bar}", 0, 1, { "bar", } },
@@ -84,6 +89,50 @@ struct test_case_struct
     { 0, "borabora-island", "${var#*bora}", 0, 1, { "bora-island", } },
     { 0, "borabora-island", "${var##*bora}", 0, 1, {"-island", } },
 
+    /* Pathname expansion */
+    { 0, NULL, "???", 0, 2, { "one", "two", } },
+    { 0, NULL, "[ot]??", 0, 2, { "one", "two", } },
+    { 0, NULL, "t*", 0, 2, { "three", "two", } },
+    { 0, NULL, "\"t\"*", 0, 2, { "three", "two", } },
+
+    /* Nested constructs */
+    { 0, "one two", "$var", 0, 2, { "one", "two", } },
+    { 0, "one two three", "$var", 0, 3, { "one", "two", "three", } },
+    { 0, " \tfoo\t\tbar ", "$var", 0, 2, { "foo", "bar", } },
+    { 0, "  red  , white blue", "$var", 0, 3, { "red", "white", "blue", } },
+    { 0, "  red  , white blue", "\"$var\"", 0, 1, { "  red  , white blue", } },
+    { 0, NULL, "\"$(echo hello there)\"", 0, 1, { "hello there", } },
+    { 0, NULL, "\"$(echo \"hello there\")\"", 0, 1, { "hello there", } },
+    { 0, NULL, "${var=one two} \"$var\"", 0, 3, { "one", "two", "one two", } },
+    { 0, "1", "$(( $(echo 3)+$var ))", 0, 1, { "4", } },
+    { 0, NULL, "\"$(echo \"*\")\"", 0, 1, { "*", } },
+
+    /* Other things that should succeed */
+    { 0, NULL, "\\*\"|&;<>\"\\(\\)\\{\\}", 0, 1, { "*|&;<>(){}", } },
+    { 0, "???", "$var", 0, 1, { "???", } },
+    { 0, NULL, "$var", 0, 0, { NULL, } },
+    { 0, NULL, "\"\\n\"", 0, 1, { "\\n", } },
+    { 0, NULL, "", 0, 0, { NULL, } },
+
+    /* Things that should fail */
+    { WRDE_BADCHAR, NULL, "new\nline", 0, 0, { NULL, } },
+    { WRDE_BADCHAR, NULL, "pipe|symbol", 0, 0, { NULL, } },
+    { WRDE_BADCHAR, NULL, "&ampersand", 0, 0, { NULL, } },
+    { WRDE_BADCHAR, NULL, "semi;colon", 0, 0, { NULL, } },
+    { WRDE_BADCHAR, NULL, "<greater", 0, 0, { NULL, } },
+    { WRDE_BADCHAR, NULL, "less>", 0, 0, { NULL, } },
+    { WRDE_BADCHAR, NULL, "(open-paren", 0, 0, { NULL, } },
+    { WRDE_BADCHAR, NULL, "close-paren)", 0, 0, { NULL, } },
+    { WRDE_BADCHAR, NULL, "{open-brace", 0, 0, { NULL, } },
+    { WRDE_BADCHAR, NULL, "close-brace}", 0, 0, { NULL, } },
+    { WRDE_CMDSUB, NULL, "$(ls)", WRDE_NOCMD, 0, { NULL, } },
+    { WRDE_BADVAL, NULL, "$var", WRDE_UNDEF, 0, { NULL, } },
+    { WRDE_SYNTAX, NULL, "$[50+20))", 0, 0, { NULL, } },
+    { WRDE_SYNTAX, NULL, "${%%noparam}", 0, 0, { NULL, } },
+    { WRDE_SYNTAX, NULL, "${missing-brace", 0, 0, { NULL, } },
+    { WRDE_SYNTAX, NULL, "$((2+))", 0, 0, { NULL, } },
+    { WRDE_SYNTAX, NULL, "`", 0, 0, { NULL, } },
+
     { -1, NULL, NULL, 0, 0, { NULL, } },
   };
 
@@ -103,9 +152,11 @@ command_line_test (const char *words)
 int
 main (int argc, char *argv[])
 {
+  char tmpdir[32];
   struct passwd *pw;
   int test;
   int fail = 0;
+  int fd;
 
   if (argc > 1)
     {
@@ -114,6 +165,16 @@ main (int argc, char *argv[])
     }
 
   setenv ("IFS", IFS, 1);
+
+  /* Set up arena for pathname expansion */
+  tmpnam (tmpdir);
+  if (mkdir (tmpdir, S_IRWXU) ||
+      chdir (tmpdir) ||
+      (fd = creat ("one", S_IRWXU)) == -1 || close (fd) ||
+      (fd = creat ("two", S_IRWXU)) == -1 || close (fd) ||
+      (fd = creat ("three", S_IRWXU)) == -1 || close (fd))
+    return -1;
+
   for (test = 0; test_case[test].retval != -1; test++)
     if (testit (&test_case[test]))
       ++fail;
@@ -155,7 +216,7 @@ testit (struct test_case_struct *tc)
   printf ("Test %d: ", ++test);
   retval = wordexp (tc->words, &we, tc->flags);
 
-  if (retval != tc->retval || we.we_wordc != tc->wordc)
+  if (retval != tc->retval || (retval != 0 && we.we_wordc != tc->wordc))
     bzzzt = 1;
   else
     for (i = 0; i < we.we_wordc; ++i)
diff --git a/posix/wordexp.c b/posix/wordexp.c
index 869598ade8..a72a677101 100644
--- a/posix/wordexp.c
+++ b/posix/wordexp.c
@@ -831,6 +831,11 @@ exec_comm (char *comm, char **word, size_t *word_length, size_t *max_length,
 	}
 
       close (fildes[0]);
+
+      /* bash chops off a terminating linefeed, which seems sensible */
+      if ((*word)[*word_length - 1] == '\n')
+	(*word)[--*word_length] = '\0';
+
       return 0;
     }
   else
@@ -1100,7 +1105,7 @@ parse_param (char **word, size_t *word_length, size_t *max_length,
 	  break;
 
 	case '%':
-	  if (!*env)
+	  if (!env || !*env)
 	    goto syntax;
 
 	  /* Separating variable name from suffix pattern? */
@@ -1124,7 +1129,7 @@ parse_param (char **word, size_t *word_length, size_t *max_length,
 	  break;
 
 	case ':':
-	  if (!*env)
+	  if (!env || !*env)
 	    goto syntax;
 
 	  if (action != '\0' || remove != RP_NONE)
@@ -1150,7 +1155,7 @@ parse_param (char **word, size_t *word_length, size_t *max_length,
 	case '=':
 	case '?':
 	case '+':
-	  if (!*env)
+	  if (!env || !*env)
 	    goto syntax;
 
 	  if (substitute_length)
@@ -1252,14 +1257,16 @@ envsubst:
       if (!quoted || *env == '*')
 	{
 	  /* Build up value parameter by parameter (copy them) */
-	  for (p = 1; __libc_argv[p]; p++)
+	  for (p = 1; __libc_argv[p]; ++p)
 	    {
-	      char * old_pointer = value;
+	      char *old_pointer = value;
+	      size_t argv_len = strlen (__libc_argv[p]);
+	      size_t old_plist_len = plist_len;
 
 	      if (value)
 		value[plist_len - 1] = 0;
 
-	      plist_len += 1 + strlen (__libc_argv[p]);
+	      plist_len += 1 + argv_len;
 
 	      /* First realloc will act as malloc because value is
 	       * initialised to NULL. */
@@ -1270,7 +1277,7 @@ envsubst:
 		  return WRDE_NOSPACE;
 		}
 
-	      strcat (value, __libc_argv[p]);
+	      memcpy (&value[old_plist_len - 1], __libc_argv[p], argv_len + 1);
 	      if (__libc_argv[p + 1])
 		{
 		  value[plist_len - 1] = '\0';
@@ -1497,16 +1504,38 @@ envsubst:
 		  == WRDE_NOSPACE)
 		break;
 
+	    if (i < we.we_wordc)
+	      {
+		/* Ran out of space */
+		wordfree (&we);
+		goto no_space;
+	      }
+
 	    if (action == '=')
-	      /* Also assign */
-	      setenv (env, we.we_wordv[0], 1); /* need to strdup? */
+	      {
+		char *words;
+		char *cp;
+		size_t words_size = 0;
 
-	    wordfree (&we);
+		for (i = 0; i < we.we_wordc; i++)
+		  words_size += strlen (we.we_wordv[i]) + 1; /* for <space> */
+		words_size++;
 
-	    if (i < we.we_wordc)
-	      /* Ran out of space */
-	      goto no_space;
+		cp = words = __alloca (words_size);
+		*words = 0;
+		for (i = 0; i < we.we_wordc - 1; i++)
+		  {
+		    cp = __stpcpy (cp, we.we_wordv[i]);
+		    *cp++ = ' ';
+		  }
 
+		__stpcpy (cp, we.we_wordv[i]);
+
+		/* Also assign */
+		setenv (env, words, 1);
+	      }
+
+	    wordfree (&we);
 	    return 0;
 	  }
 
@@ -1550,7 +1579,7 @@ envsubst:
     {
       /* Variable not defined */
       if (flags & WRDE_UNDEF)
-	return WRDE_SYNTAX;
+	return WRDE_BADVAL;
 
       return 0;
     }
@@ -1694,7 +1723,7 @@ parse_dollars (char **word, size_t *word_length, size_t *max_length,
 
       (*offset) += 2;
       return parse_comm (word, word_length, max_length, words, offset, flags,
-			 pwordexp, ifs, ifs_white);
+			 quoted? NULL : pwordexp, ifs, ifs_white);
 
     case '[':
       (*offset) += 2;
@@ -1946,6 +1975,7 @@ wordexp (const char *words, wordexp_t *pwordexp, int flags)
       case '>':
       case '(':
       case ')':
+	case '{':
       case '}':
 	/* Fail */
 	wordfree (pwordexp);