re PR java/7830 (Off-by-one buffer overruns in fastjar tool)

	From greenrd@hotmail.com:
	* jartool.c (list_jar): Correctly determine when new `filename'
	buffer must be allocated.  Fixes PR java/7830.

From-SVN: r56818

fastjar/ChangeLog

+2002-09-04  Tom Tromey  <tromey@redhat.com>
+
+	From greenrd@hotmail.com:
+	* jartool.c (list_jar): Correctly determine when new `filename'
+	buffer must be allocated.  Fixes PR java/7830.
+
 2002-06-03  Geoffrey Keating  <geoffk@redhat.com>
 
 	* configure.in: Support cross-compiling.

fastjar/jartool.c

@@ -1657,7 +1657,7 @@ int list_jar(int fd, char **files, int file_num){
         strftime(ascii_date, 30, "%a %b %d %H:%M:%S %Z %Y", s_tm);
       }
 
-      if(filename_len < fnlen){
+      if(filename_len < fnlen + 1){
         if(filename != NULL)
           free(filename);
       
@@ -1776,7 +1776,7 @@ int list_jar(int fd, char **files, int file_num){
         strftime(ascii_date, 30, "%a %b %d %H:%M:%S %Z %Y", s_tm);
       }
 
-      if(filename_len < fnlen){
+      if(filename_len < fnlen + 1){
         if(filename != NULL)
           free(filename);