BASH PATCH REPORT
			     =================

Bash-Release:	4.3
Patch-ID:	bash43-020

Bug-Reported-by:	Jared Yanovich <slovichon@gmail.com>
Bug-Reference-ID:	<20140417073654.GB26875@nightderanger.psc.edu>
Bug-Reference-URL:	http://lists.gnu.org/archive/html/bug-bash/2014-04/msg00065.html

Bug-Description:

When PS2 contains a command substitution, here-documents entered in an
interactive shell can sometimes cause a segmentation fault.

Patch (apply with `patch -p0'):

--- a/shell.h
+++ b/shell.h
@@ -168,7 +168,8 @@ typedef struct _sh_parser_state_t {
   /* flags state affecting the parser */
   int expand_aliases;
   int echo_input_at_read;
-  
+  int need_here_doc;
+
 } sh_parser_state_t;
 
 typedef struct _sh_input_line_state_t {
--- a/parse.y
+++ b/parse.y
@@ -2642,7 +2642,7 @@ gather_here_documents ()
   int r;
 
   r = 0;
-  while (need_here_doc)
+  while (need_here_doc > 0)
     {
       parser_state |= PST_HEREDOC;
       make_here_document (redir_stack[r++], line_number);
@@ -6075,6 +6075,7 @@ save_parser_state (ps)
 
   ps->expand_aliases = expand_aliases;
   ps->echo_input_at_read = echo_input_at_read;
+  ps->need_here_doc = need_here_doc;
 
   ps->token = token;
   ps->token_buffer_size = token_buffer_size;
@@ -6123,6 +6124,7 @@ restore_parser_state (ps)
 
   expand_aliases = ps->expand_aliases;
   echo_input_at_read = ps->echo_input_at_read;
+  need_here_doc = ps->need_here_doc;
 
   FREE (token);
   token = ps->token;
--- a/y.tab.c
+++ b/y.tab.c
@@ -4954,7 +4954,7 @@ gather_here_documents ()
   int r;
 
   r = 0;
-  while (need_here_doc)
+  while (need_here_doc > 0)
     {
       parser_state |= PST_HEREDOC;
       make_here_document (redir_stack[r++], line_number);
@@ -8387,6 +8387,7 @@ save_parser_state (ps)
 
   ps->expand_aliases = expand_aliases;
   ps->echo_input_at_read = echo_input_at_read;
+  ps->need_here_doc = need_here_doc;
 
   ps->token = token;
   ps->token_buffer_size = token_buffer_size;
@@ -8435,6 +8436,7 @@ restore_parser_state (ps)
 
   expand_aliases = ps->expand_aliases;
   echo_input_at_read = ps->echo_input_at_read;
+  need_here_doc = ps->need_here_doc;
 
   FREE (token);
   token = ps->token;
--- a/patchlevel.h
+++ b/patchlevel.h
@@ -25,6 +25,6 @@
    regexp `^#define[ 	]*PATCHLEVEL', since that's what support/mkversion.sh
    looks for to find the patch level (for the sccs version string). */
 
-#define PATCHLEVEL 19
+#define PATCHLEVEL 20
 
 #endif /* _PATCHLEVEL_H_ */