From 49c136df375a5c9a831f044eb2e3fb3352429cee Mon Sep 17 00:00:00 2001
From: Sverker Eriksson <sverker@erlang.org>
Date: Wed, 30 Nov 2011 16:51:44 +0100
Subject: erts: Make erts_printf accept internal match states

This is useful during debugging to prevent erts_printf from crashing
when passed a match state term.
---
 erts/emulator/beam/erl_printf_term.c | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

(limited to 'erts/emulator/beam/erl_printf_term.c')

diff --git a/erts/emulator/beam/erl_printf_term.c b/erts/emulator/beam/erl_printf_term.c
index 34da9cab84..2320b64295 100644
--- a/erts/emulator/beam/erl_printf_term.c
+++ b/erts/emulator/beam/erl_printf_term.c
@@ -437,7 +437,10 @@ print_term(fmtfn_t fn, void* arg, Eterm obj, long *dcount,
 	}
 	    break;
 	case BINARY_DEF:
-	    {
+	    if (header_is_bin_matchstate(*boxed_val(wobj))) {
+		PRINT_STRING(res, fn, arg, "#MatchState");
+	    }
+	    else {
 		ProcBin* pb = (ProcBin *) binary_val(wobj);
 		if (pb->size == 1)
 		    PRINT_STRING(res, fn, arg, "<<1 byte>>");
-- 
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