PATCH: Correct alloca length in dump_gimple_bb_header

[H.J. Lu]

Hi,

When indent == 0, we call alloca with -1 bytes.  This patch changes
it to indent + 1.  This is a trunk only regression.  OK to install?

Thanks.


H.J.
---
2012-10-29  H.J. Lu  <hongjiu...@intel.com>

        * gimple-pretty-print.c (dump_gimple_bb_header): Correct alloca
        length.

diff --git a/gcc/gimple-pretty-print.c b/gcc/gimple-pretty-print.c
index 4b3235e..62c315e 100644
--- a/gcc/gimple-pretty-print.c
+++ b/gcc/gimple-pretty-print.c
@@ -2093,7 +2093,7 @@ dump_gimple_bb_header (FILE *outf, basic_block bb, int 
indent, int flags)
       gimple stmt = first_stmt (bb);
       if (!stmt || gimple_code (stmt) != GIMPLE_LABEL)
        {
-         char *s_indent = (char *) alloca ((size_t) indent - 2 + 1);
+         char *s_indent = (char *) alloca ((size_t) indent + 1);
          memset (s_indent, ' ', (size_t) indent);
          s_indent[indent] = '\0';
          fprintf (outf, "%s<bb %d>:\n", s_indent, bb->index);