setting terminating null in sourcename rather than fullSource string

diff --git a/spec2make.c b/spec2make.c
index 94c9306..18bebd8 100644 (file)
--- a/spec2make.c
+++ b/spec2make.c
@@ -135,8 +135,9 @@ main(int argc, char *argv[])
        suffix_index=strstr(fullSource,*suffix);
        if (suffix_index) {
          char sourcename[PATH_MAX];
-         strncpy(sourcename,fullSource,suffix_index-fullSource);
-         *suffix_index='\0';
+         size_t len = (size_t)(suffix_index-fullSource);
+         strncpy(sourcename,fullSource,len);
+         sourcename[len]='\0';
          printf ("%s-SOURCE := SOURCES/%s\n",package_name,basename(sourcename));
          printf ("%s-CODEBASE := CODEBASES/%s\n",package_name,package_name);
          break;