source: patches/bash-4.4-branch_update-1.patch@ b3e9c0c

bashline.c

@@ -142 +142 @@
 static rl_icppfunc_t *save_directory_hook __P((void));
 static void restore_directory_hook __P((rl_icppfunc_t));
 
-static int directory_exists __P((const char *));
+static int directory_exists __P((const char *, int));
 
 static void cleanup_expansion_error __P((void));
 static void maybe_make_readline_line __P((char *));
@@ -3102 +3102 @@
     rl_directory_rewrite_hook = hookf;
 }
 
-/* Check whether not the (dequoted) version of DIRNAME, with any trailing slash
-   removed, exists. */
+/* Check whether not DIRNAME, with any trailing slash removed, exists.  If
+   SHOULD_DEQUOTE is non-zero, we dequote the directory name first. */
 static int
-directory_exists (dirname)
+directory_exists (dirname, should_dequote)
      const char *dirname;
+     int should_dequote;
 {
   char *new_dirname;
   int dirlen, r;
   struct stat sb;
 
-  /* First, dequote the directory name */
-  new_dirname = bash_dequote_filename ((char *)dirname, rl_completion_quote_character);
+  /* We save the string and chop the trailing slash because stat/lstat behave
+     inconsistently if one is present. */
+  new_dirname = should_dequote ? bash_dequote_filename ((char *)dirname, rl_completion_quote_character) : savestring (dirname);
   dirlen = STRLEN (new_dirname);
   if (new_dirname[dirlen - 1] == '/')
     new_dirname[dirlen - 1] = '\0';
@@ -3145 +3147 @@
   else if (t = mbschr (local_dirname, '`'))     /* XXX */
     should_expand_dirname = '`';
 
-  if (should_expand_dirname && directory_exists (local_dirname))
+  if (should_expand_dirname && directory_exists (local_dirname, 0))
     should_expand_dirname = 0;
   
   if (should_expand_dirname)  
@@ -3155 +3157 @@
          have to worry about restoring this setting. */
       global_nounset = unbound_vars_is_error;
       unbound_vars_is_error = 0;
-      wl = expand_prompt_string (new_dirname, 0, W_NOCOMSUB|W_COMPLETE);        /* does the right thing */
+      wl = expand_prompt_string (new_dirname, 0, W_NOCOMSUB|W_NOPROCSUB|W_COMPLETE);    /* does the right thing */
       unbound_vars_is_error = global_nounset;
       if (wl)
         {
@@ -3244 +3246 @@
         should_expand_dirname = '`';
     }
 
-  if (should_expand_dirname && directory_exists (local_dirname))
+  if (should_expand_dirname && directory_exists (local_dirname, 1))
     should_expand_dirname = 0;
 
   if (should_expand_dirname)  
     {
       new_dirname = savestring (local_dirname);
-      wl = expand_prompt_string (new_dirname, 0, W_NOCOMSUB|W_COMPLETE);        /* does the right thing */
+      wl = expand_prompt_string (new_dirname, 0, W_NOCOMSUB|W_NOPROCSUB|W_COMPLETE);    /* does the right thing */
       if (wl)
         {
           *dirname = string_list (wl);

builtins/evalstring.c

@@ -104 +104 @@
           running_trap == 0 &&
           *bash_input.location.string == '\0' &&
           command->type == cm_simple &&
-#if 0
           signal_is_trapped (EXIT_TRAP) == 0 &&
           signal_is_trapped (ERROR_TRAP) == 0 &&
-#else
           any_signals_trapped () < 0 &&
-#endif
           command->redirects == 0 && command->value.Simple->redirects == 0 &&
           ((command->flags & CMD_TIME_PIPELINE) == 0) &&
           ((command->flags & CMD_INVERT_RETURN) == 0));

builtins/pushd.def

@@ -365 +365 @@
         break;
     }
 
-  if (which > directory_list_offset || (directory_list_offset == 0 && which == 0))
+  if (which > directory_list_offset || (which < -directory_list_offset) || (directory_list_offset == 0 && which == 0))
     {
       pushd_error (directory_list_offset, which_word ? which_word : "");
       return (EXECUTION_FAILURE);
@@ -387 +387 @@
          remove that directory from the list and shift the remainder
          of the list into place. */
       i = (direction == '+') ? directory_list_offset - which : which;
+      if (i < 0 || i > directory_list_offset)
+        {
+          pushd_error (directory_list_offset, which_word ? which_word : "");
+          return (EXECUTION_FAILURE);
+        }
       free (pushd_directory_list[i]);
       directory_list_offset--;
 

builtins/read.def

@@ -181 +181 @@
      WORD_LIST *list;
 {
   register char *varname;
-  int size, i, nr, pass_next, saw_escape, eof, opt, retval, code, print_ps2;
+  int size, nr, pass_next, saw_escape, eof, opt, retval, code, print_ps2;
+  volatile int i;
   int input_is_tty, input_is_pipe, unbuffered_read, skip_ctlesc, skip_ctlnul;
   int raw, edit, nchars, silent, have_timeout, ignore_delim, fd, lastsig, t_errno;
   unsigned int tmsec, tmusec;

bash-4.4

@@ -578 +578 @@
   rval = cval = explor ();
   if (curtok == QUES)           /* found conditional expr */
     {
-      readtok ();
-      if (curtok == 0 || curtok == COL)
-        evalerror (_("expression expected"));
       if (cval == 0)
         {
           set_noeval = 1;
           noeval++;
         }
 
+      readtok ();
+      if (curtok == 0 || curtok == COL)
+        evalerror (_("expression expected"));
+
       val1 = EXP_HIGHEST ();
 
       if (set_noeval)
         noeval--;
       if (curtok != COL)
         evalerror (_("`:' expected for conditional expression"));
-      readtok ();
-      if (curtok == 0)
-        evalerror (_("expression expected"));
+
       set_noeval = 0;
       if (cval)
         {
@@ -603 +602 @@
           noeval++;
         }
 
+      readtok ();
+      if (curtok == 0)
+        evalerror (_("expression expected"));
       val2 = expcond ();
+
       if (set_noeval)
         noeval--;
       rval = cval ? val1 : val2;

bash-4.4

@@ -453 +453 @@
     discard_pipeline (disposer);
 }
 
+void
+discard_last_procsub_child ()
+{
+  PROCESS *disposer;
+  sigset_t set, oset;
+
+  BLOCK_CHILD (set, oset);
+  disposer = last_procsub_child;
+  last_procsub_child = (PROCESS *)NULL;
+  UNBLOCK_CHILD (oset);
+
+  if (disposer)
+    discard_pipeline (disposer);
+}
+
 struct pipeline_saver *
 alloc_pipeline_saver ()
 {

bash-4.4

@@ -190 +190 @@
 extern void making_children __P((void));
 extern void stop_making_children __P((void));
 extern void cleanup_the_pipeline __P((void));
+extern void discard_last_procsub_child __P((void));
 extern void save_pipeline __P((int));
 extern PROCESS *restore_pipeline __P((int));
 extern void start_pipeline __P((void));

lib/glob/sm_loop.c

@@ -330 +330 @@
   for (pc = 0; p[pc]; pc++)
     if (p[pc] == L('.') && p[pc+1] == L(']'))
       break;
+   if (p[pc] == 0)
+    {
+      if (vp)
+        *vp = INVALID;
+      return (p + pc);
+    }
    val = COLLSYM (p, pc);
    if (vp)
      *vp = val;
@@ -483 +489 @@
       c = *p++;
       c = FOLD (c);
 
+      if (c == L('\0'))
+        return ((test == L('[')) ? savep : (CHAR *)0);
+
       if ((flags & FNM_PATHNAME) && c == L('/'))
         /* [/] can never match when matching a pathname.  */
         return (CHAR *)0;

lib/readline/history.c

@@ -57 +57 @@
 /* How big to make the_history when we first allocate it. */
 #define DEFAULT_HISTORY_INITIAL_SIZE    502
 
+#define MAX_HISTORY_INITIAL_SIZE        8192
+
 /* The number of slots to increase the_history by. */
 #define DEFAULT_HISTORY_GROW_SIZE 50
 
@@ -277 +279 @@
      const char *string;
 {
   HIST_ENTRY *temp;
+  int new_length;
 
   if (history_stifled && (history_length == history_max_entries))
     {
@@ -293 +296 @@
 
       /* Copy the rest of the entries, moving down one slot.  Copy includes
          trailing NULL.  */
-#if 0
-      for (i = 0; i < history_length; i++)
-        the_history[i] = the_history[i + 1];
-#else
       memmove (the_history, the_history + 1, history_length * sizeof (HIST_ENTRY *));
-#endif
 
+      new_length = history_length;
       history_base++;
     }
   else
@@ -307 +306 @@
       if (history_size == 0)
         {
           if (history_stifled && history_max_entries > 0)
-            history_size = history_max_entries + 2;
+            history_size = (history_max_entries > MAX_HISTORY_INITIAL_SIZE)
+                                ? MAX_HISTORY_INITIAL_SIZE
+                                : history_max_entries + 2;
           else
             history_size = DEFAULT_HISTORY_INITIAL_SIZE;
           the_history = (HIST_ENTRY **)xmalloc (history_size * sizeof (HIST_ENTRY *));
-          history_length = 1;
+          new_length = 1;
         }
       else
         {
@@ -321 +322 @@
               the_history = (HIST_ENTRY **)
                 xrealloc (the_history, history_size * sizeof (HIST_ENTRY *));
             }
-          history_length++;
+          new_length = history_length + 1;
         }
     }
 
   temp = alloc_history_entry ((char *)string, hist_inittime ());
 
-  the_history[history_length] = (HIST_ENTRY *)NULL;
-  the_history[history_length - 1] = temp;
+  the_history[new_length] = (HIST_ENTRY *)NULL;
+  the_history[new_length - 1] = temp;
+  history_length = new_length;
 }
 
 /* Change the time stamp of the most recent history entry to STRING. */

patchlevel.h

@@ -25 +25 @@
    regexp `^#define[    ]*PATCHLEVEL', since that's what support/mkversion.sh
    looks for to find the patch level (for the sccs version string). */
 
-#define PATCHLEVEL 0
+#define PATCHLEVEL 12
 
 #endif /* _PATCHLEVEL_H_ */

bash-4.4

@@ -585 +585 @@
 #if defined (JOB_CONTROL)
   if (sig == SIGHUP && (interactive || (subshell_environment & (SUBSHELL_COMSUB|SUBSHELL_PROCSUB))))
     hangup_all_jobs ();
-  end_job_control ();
+  if ((subshell_environment & (SUBSHELL_COMSUB|SUBSHELL_PROCSUB)) == 0)
+    end_job_control ();
 #endif /* JOB_CONTROL */
 
 #if defined (PROCESS_SUBSTITUTION)

subst.c

@@ -2825 +2825 @@
 
 /* Parse a single word from STRING, using SEPARATORS to separate fields.
    ENDPTR is set to the first character after the word.  This is used by
-   the `read' builtin.  This is never called with SEPARATORS != $IFS;
-   it should be simplified.
+   the `read' builtin.
+   
+   This is never called with SEPARATORS != $IFS, and takes advantage of that.
 
    XXX - this function is very similar to list_string; they should be
          combined - XXX */
+
+#define islocalsep(c)   (local_cmap[(unsigned char)(c)] != 0)
+
 char *
 get_word_from_string (stringp, separators, endptr)
      char **stringp, *separators, **endptr;
@@ -2837 +2841 @@
   register char *s;
   char *current_word;
   int sindex, sh_style_split, whitesep, xflags;
+  unsigned char local_cmap[UCHAR_MAX+1];        /* really only need single-byte chars here */
   size_t slen;
 
   if (!stringp || !*stringp || !**stringp)
@@ -2846 +2851 @@
                                  separators[1] == '\t' &&
                                  separators[2] == '\n' &&
                                  separators[3] == '\0';
-  for (xflags = 0, s = ifs_value; s && *s; s++)
+  memset (local_cmap, '\0', sizeof (local_cmap));
+  for (xflags = 0, s = separators; s && *s; s++)
     {
       if (*s == CTLESC) xflags |= SX_NOCTLESC;
       if (*s == CTLNUL) xflags |= SX_NOESCCTLNUL;
+      local_cmap[(unsigned char)*s] = 1;        /* local charmap of separators */
     }
 
   s = *stringp;
   slen = 0;
 
   /* Remove sequences of whitespace at the beginning of STRING, as
-     long as those characters appear in IFS. */
-  if (sh_style_split || !separators || !*separators)
+     long as those characters appear in SEPARATORS.  This happens if
+     SEPARATORS == $' \t\n' or if IFS is unset. */
+  if (sh_style_split || separators == 0)
     {
-      for (; *s && spctabnl (*s) && isifs (*s); s++);
+      for (; *s && spctabnl (*s) && islocalsep (*s); s++);
 
       /* If the string is nothing but whitespace, update it and return. */
       if (!*s)
@@ -2878 +2886 @@
 
      This obeys the field splitting rules in Posix.2. */
   sindex = 0;
-  /* Don't need string length in ADVANCE_CHAR or string_extract_verbatim
-     unless multibyte chars are possible. */
-  slen = (MB_CUR_MAX > 1) ? STRLEN (s) : 1;
+  /* Don't need string length in ADVANCE_CHAR unless multibyte chars are
+     possible, but need it in string_extract_verbatim for bounds checking */
+  slen = STRLEN (s);
   current_word = string_extract_verbatim (s, slen, &sindex, separators, xflags);
 
   /* Set ENDPTR to the first character after the end of the word. */
@@ -2899 +2907 @@
 
   /* Now skip sequences of space, tab, or newline characters if they are
      in the list of separators. */
-  while (s[sindex] && spctabnl (s[sindex]) && isifs (s[sindex]))
+  while (s[sindex] && spctabnl (s[sindex]) && islocalsep (s[sindex]))
     sindex++;
 
   /* If the first separator was IFS whitespace and the current character is
      a non-whitespace IFS character, it should be part of the current field
      delimiter, not a separate delimiter that would result in an empty field.
      Look at POSIX.2, 3.6.5, (3)(b). */
-  if (s[sindex] && whitesep && isifs (s[sindex]) && !spctabnl (s[sindex]))
+  if (s[sindex] && whitesep && islocalsep (s[sindex]) && !spctabnl (s[sindex]))
     {
       sindex++;
       /* An IFS character that is not IFS white space, along with any adjacent
          IFS white space, shall delimit a field. */
-      while (s[sindex] && spctabnl (s[sindex]) && isifs (s[sindex]))
+      while (s[sindex] && spctabnl (s[sindex]) && islocalsep(s[sindex]))
         sindex++;
     }
 
@@ -5808 +5816 @@
     {
 #if defined (JOB_CONTROL)
       if (last_procsub_child)
-        {
-          discard_pipeline (last_procsub_child);
-          last_procsub_child = (PROCESS *)NULL;
-        }
+        discard_last_procsub_child ();
       last_procsub_child = restore_pipeline (0);
 #endif
 
@@ -5931 +5936 @@
   char *istring, buf[128], *bufp, *s;
   int istring_index, istring_size, c, tflag, skip_ctlesc, skip_ctlnul;
   ssize_t bufn;
+  int nullbyte;
 
   istring = (char *)NULL;
   istring_index = istring_size = bufn = tflag = 0;
@@ -5938 +5944 @@
   for (skip_ctlesc = skip_ctlnul = 0, s = ifs_value; s && *s; s++)
     skip_ctlesc |= *s == CTLESC, skip_ctlnul |= *s == CTLNUL;
 
+  nullbyte = 0;
+
   /* Read the output of the command through the pipe.  This may need to be
      changed to understand multibyte characters in the future. */
   while (1)
@@ -5956 +5964 @@
       if (c == 0)
         {
 #if 1
-          internal_warning ("%s", _("command substitution: ignored null byte in input"));
+          if (nullbyte == 0)
+            {
+              internal_warning ("%s", _("command substitution: ignored null byte in input"));
+              nullbyte = 1;
+            }
 #endif
           continue;
         }
@@ -9454 +9466 @@
                 tword->flags |= word->flags & (W_ASSIGNARG|W_ASSIGNRHS);        /* affects $@ */
               if (word->flags & W_COMPLETE)
                 tword->flags |= W_COMPLETE;     /* for command substitutions */
+              if (word->flags & W_NOCOMSUB)
+                tword->flags |= W_NOCOMSUB;
+              if (word->flags & W_NOPROCSUB)
+                tword->flags |= W_NOPROCSUB;
 
               temp = (char *)NULL;