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# DP: bash43-020 upstream patch
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'):
Index: b/shell.h
===================================================================
--- 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 {
Index: b/parse.y
===================================================================
--- 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;
Index: b/y.tab.c
===================================================================
--- 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;
Index: b/patchlevel.h
===================================================================
--- 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_ */
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