From a362fd81ae450a263d8b65983d6f84e46247f722 Mon Sep 17 00:00:00 2001
From: Clifford Wolf <clifford@clifford.at>
Date: Fri, 22 Nov 2013 14:08:43 +0100
Subject: [PATCH] Fixed O(n^2) performance bug in verilog preprocessor

---
 frontends/verilog/preproc.cc | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/frontends/verilog/preproc.cc b/frontends/verilog/preproc.cc
index 9f824526a..8d435d940 100644
--- a/frontends/verilog/preproc.cc
+++ b/frontends/verilog/preproc.cc
@@ -62,7 +62,7 @@ static void insert_input(std::string str)
 
 static char next_char()
 {
-	if (input_buffer.size() == 0)
+	if (input_buffer.empty())
 		return 0;
 
 	assert(input_buffer_charp <= input_buffer.front().size());
-- 
2.30.2