From: helly <helly@642ea486-5414-0410-9d7f-a0204ed87703>
Date: Tue, 26 Jun 2007 15:17:30 +0000 (+0000)
Subject: - Fixed #1743180 fwrite with 0 length crashes on OS X
X-Git-Tag: 0.13.6~127
X-Git-Url: https://granicus.if.org/sourcecode?a=commitdiff_plain;h=2bb2d6f1248944acc3b26bb9051f85496266e72d;p=re2c

- Fixed #1743180 fwrite with 0 length crashes on OS X
---

diff --git a/re2c/CHANGELOG b/re2c/CHANGELOG
index 64c7c0a0..fa5dabf3 100644
--- a/re2c/CHANGELOG
+++ b/re2c/CHANGELOG
@@ -7,6 +7,10 @@ Version 0.13.0 (2007-06-24)
 - Fixed issue with short form of switches and parameter if not first switch.
 - Fixed #1708378 segfault in actions.cc.
 
+Version 0.12.2 (2007-06-26)
+---------------------------
+- Fixed #1743180 fwrite with 0 length crashes on OS X.
+
 Version 0.12.1 (2007-05-23
 ---------------------------
 - Fixed #1711240 problem with '"' and 7F on EBCDIC plattforms.
diff --git a/re2c/htdocs/index.html b/re2c/htdocs/index.html
index dc5e3e44..6363300b 100755
--- a/re2c/htdocs/index.html
+++ b/re2c/htdocs/index.html
@@ -89,6 +89,10 @@ fixes which were incorporated. <a href=
 <li>Fixed issue with short form of switches and parameter if not first switch.</li>
 <li>Fixed #1708378 segfault in actions.cc.</li>
 </ul>
+<h2>2007-06-26: 0.12.2</h2>
+<ul>
+<li>Fixed #1743180 fwrite with 0 length crashes on OS X.</li>
+</ul>
 <h2>2007-05-23: 0.12.1</h2>
 <ul>
 <li>Fixed #1711240 problem with '"' and 7F on EBCDIC plattforms.</li>
diff --git a/re2c/stream_lc.h b/re2c/stream_lc.h
index b7505b08..c2895125 100755
--- a/re2c/stream_lc.h
+++ b/re2c/stream_lc.h
@@ -258,7 +258,9 @@ protected:
 
 	virtual int sync()
 	{
-		fwrite(buffer.c_str(), sizeof(_E), buffer.length(), fp);
+		if (buffer.length() != 0) {
+			fwrite(buffer.c_str(), sizeof(_E), buffer.length(), fp);
+		}
 		buffer.clear();
 		return fp == 0
 			|| _Tr::eq_int_type(_Tr::eof(), overflow())
@@ -267,7 +269,9 @@ protected:
 
 	virtual std::streamsize xsputn(const _E *buf, std::streamsize cnt)
 	{
-		fwrite(buffer.c_str(), sizeof(_E), buffer.length(), fp);
+		if (buffer.length() != 0) {
+			fwrite(buffer.c_str(), sizeof(_E), buffer.length(), fp);
+		}
 		buffer.clear();
 		/*fline += std::count(buf, buf + cnt, '\n');*/
 		for (std::streamsize pos = 0; pos < cnt; ++pos) 
@@ -277,7 +281,11 @@ protected:
 				++fline;
 			}
 		}
-		return fwrite(buf, sizeof(_E), cnt, fp);
+		if (cnt != 0) {
+			return fwrite(buf, sizeof(_E), cnt, fp);
+		} else {
+			return 0;
+		}
 	}
 
 private: