X-Git-Url: http://nsz.repo.hu/git/?a=blobdiff_plain;f=jump_target.c;h=ebdf1022cc8f1e1eac1b39346fae56f0c64a5d2a;hb=84b4c24ec6848505549af4b240df492317138f27;hp=c5991d4151dadc46fd87a29f6753ed73fbd969cf;hpb=2bb94311298af01987fdb9c80666adc0ee7ee3ef;p=cparser

diff --git a/jump_target.c b/jump_target.c
index c5991d4..ebdf102 100644
--- a/jump_target.c
+++ b/jump_target.c
@@ -1,3 +1,7 @@
+/*
+ * This file is part of cparser.
+ * Copyright (C) 2012 Christoph Mallon <christoph.mallon@gmx.de>
+ */
 #include "adt/util.h"
 #include "jump_target.h"
 
@@ -46,15 +50,20 @@ ir_node *enter_jump_target(jump_target *const tgt)
 	return block;
 }
 
-ir_node *get_target_block(jump_target *const tgt)
+void enter_immature_jump_target(jump_target *const tgt)
 {
-	if (!tgt->block) {
-		tgt->block = new_immBlock();
+	ir_node *jmp;
+	ir_node *block = tgt->block;
+	if (!block) {
+		/* Avoid unreachable loops by adding a Bad entry. */
+		jmp = new_Bad(mode_X);
+		goto new_block;
 	} else if (tgt->first) {
-		ir_node *const jmp = new_r_Jmp(tgt->block);
-		tgt->block = new_immBlock();
 		tgt->first = false;
-		add_immBlock_pred(tgt->block, jmp);
+		jmp = new_r_Jmp(block);
+new_block:
+		tgt->block = block = new_immBlock();
+		add_immBlock_pred(block, jmp);
 	}
-	return tgt->block;
+	set_cur_block(block);
 }