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84 lines
2.5 KiB
84 lines
2.5 KiB
6 years ago
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--- ../bash-4.2-orig/parse.y 2014-09-25 13:07:59.218209276 +0200
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+++ parse.y 2014-09-25 15:26:52.813159810 +0200
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@@ -264,9 +264,21 @@
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/* Variables to manage the task of reading here documents, because we need to
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defer the reading until after a complete command has been collected. */
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-static REDIRECT *redir_stack[10];
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+static REDIRECT **redir_stack;
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int need_here_doc;
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+/* Pushes REDIR onto redir_stack, resizing it as needed. */
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+static void
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+push_redir_stack (REDIRECT *redir)
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+{
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+ /* Guard against oveflow. */
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+ if (need_here_doc + 1 > INT_MAX / sizeof (*redir_stack))
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+ abort ();
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+ redir_stack = xrealloc (redir_stack,
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+ (need_here_doc + 1) * sizeof (*redir_stack));
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+ redir_stack[need_here_doc++] = redir;
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+}
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+
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/* Where shell input comes from. History expansion is performed on each
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line when the shell is interactive. */
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static char *shell_input_line = (char *)NULL;
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@@ -519,42 +531,42 @@
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source.dest = 0;
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redir.filename = $2;
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$$ = make_redirection (source, r_reading_until, redir, 0);
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- redir_stack[need_here_doc++] = $$;
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+ push_redir_stack ($$);
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}
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| NUMBER LESS_LESS WORD
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{
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source.dest = $1;
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redir.filename = $3;
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$$ = make_redirection (source, r_reading_until, redir, 0);
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- redir_stack[need_here_doc++] = $$;
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+ push_redir_stack ($$);
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}
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| REDIR_WORD LESS_LESS WORD
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{
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source.filename = $1;
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redir.filename = $3;
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$$ = make_redirection (source, r_reading_until, redir, REDIR_VARASSIGN);
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- redir_stack[need_here_doc++] = $$;
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+ push_redir_stack ($$);
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}
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| LESS_LESS_MINUS WORD
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{
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source.dest = 0;
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redir.filename = $2;
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$$ = make_redirection (source, r_deblank_reading_until, redir, 0);
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- redir_stack[need_here_doc++] = $$;
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+ push_redir_stack ($$);
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}
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| NUMBER LESS_LESS_MINUS WORD
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{
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source.dest = $1;
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redir.filename = $3;
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$$ = make_redirection (source, r_deblank_reading_until, redir, 0);
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- redir_stack[need_here_doc++] = $$;
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+ push_redir_stack ($$);
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}
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| REDIR_WORD LESS_LESS_MINUS WORD
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{
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source.filename = $1;
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redir.filename = $3;
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$$ = make_redirection (source, r_deblank_reading_until, redir, REDIR_VARASSIGN);
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- redir_stack[need_here_doc++] = $$;
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+ push_redir_stack ($$);
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}
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| LESS_LESS_LESS WORD
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{
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@@ -4757,7 +4769,7 @@
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case CASE:
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case SELECT:
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case FOR:
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- if (word_top < MAX_CASE_NEST)
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+ if (word_top + 1 < MAX_CASE_NEST)
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word_top++;
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word_lineno[word_top] = line_number;
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break;
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