From: Robert Ou <rqou@robertou.com>
Date: Tue, 14 Nov 2017 12:08:36 +0000 (-0800)
Subject: Fix infinite loop in abc command under emscripten
X-Git-Tag: yosys-0.8~89^2~3
X-Git-Url: https://git.libre-soc.org/?a=commitdiff_plain;h=9763e4d830fa85aeb1577cab4dec9f4becc28f03;p=yosys.git

Fix infinite loop in abc command under emscripten
---

diff --git a/passes/techmap/abc.cc b/passes/techmap/abc.cc
index 8e1484301..18868c6d7 100644
--- a/passes/techmap/abc.cc
+++ b/passes/techmap/abc.cc
@@ -550,11 +550,13 @@ std::string replace_tempdir(std::string text, std::string tempdir_name, bool sho
 	}
 
 	std::string  selfdir_name = proc_self_dirname();
-	while (1) {
-		size_t pos = text.find(selfdir_name);
-		if (pos == std::string::npos)
-			break;
-		text = text.substr(0, pos) + "<yosys-exe-dir>/" + text.substr(pos + GetSize(selfdir_name));
+	if (selfdir_name != "/") {
+		while (1) {
+			size_t pos = text.find(selfdir_name);
+			if (pos == std::string::npos)
+				break;
+			text = text.substr(0, pos) + "<yosys-exe-dir>/" + text.substr(pos + GetSize(selfdir_name));
+		}
 	}
 
 	return text;