Fix memory corruption in genmacro. If the string is empty, don't start

screwing with stuff at str[strlen(str)-1].

yasm-0.4.0-genmacro.patch

@@ -0,0 +1,13 @@
+--- yasm-0.4.0/modules/preprocs/nasm/genmacro.c~	2004-10-31 03:55:54.000000000 +0000
++++ yasm-0.4.0/modules/preprocs/nasm/genmacro.c	2005-02-14 09:21:37.000000000 +0000
+@@ -102,8 +102,8 @@
+ 	    while (*strp == ' ' || *strp == '\t')
+ 		strp++;
+ 	    len = strlen(strp);
+-	    while (strp[len-1] == ' ' || strp[len-1] == '\t' ||
+-		   strp[len-1] == '\n') {
++	    while (len && (strp[len-1] == ' ' || strp[len-1] == '\t' ||
++			   strp[len-1] == '\n')) {
+ 		strp[len-1] = '\0';
+ 		len--;
+ 	    }

yasm.spec

@@ -1,11 +1,12 @@
 Summary: Complete rewrite of the NASM assembler
 Name: yasm
 Version: 0.4.0
-Release: 1
+Release: 2
 License: BSD
 Group: Development/Languages
 URL: http://www.tortall.net/projects/yasm/
 Source: http://www.tortall.net/projects/yasm/releases/yasm-%{version}.tar.gz
+Patch0: yasm-0.4.0-genmacro.patch
 BuildRoot: %{_tmppath}/%{name}-%{version}-%{release}-root
 BuildRequires: bison, byacc, xmlto, gettext-devel
 
@@ -36,7 +37,7 @@ Install this package if you need to rebuild applications that use yasm.
 
 %prep
 %setup
-
+%patch0 -p1
 
 %build
 %configure
@@ -82,6 +83,9 @@ Install this package if you need to rebuild applications that use yasm.
 
 
 %changelog
+* Mon Feb 14 2005 David Woodhouse <dwmw2@infradead.org> 0.4.0-2
+- Fix corruption in genmacro
+
 * Fri Jan 28 2005 Matthias Saou <http://freshrpms.net/> 0.4.0-1
 - Initial RPM release.