1 files changed, 7 insertions, 3 deletions

diff --git a/bzip2.c b/bzip2.c
index 1538faf..0c4445c 100644
--- a/bzip2.c
+++ b/bzip2.c
@@ -1767,8 +1767,8 @@ void addFlagsFromEnvVar ( Cell** argList, Char* varName )
          if (p[i] == 0) break;
          p += i;
          i = 0;
-         while (isspace((Int32)(p[0]))) p++;
-         while (p[i] != 0 && !isspace((Int32)(p[i]))) i++;
+         while (isspace((UChar)(p[0]))) p++;
+         while (p[i] != 0 && !isspace((UChar)(p[i]))) i++;
          if (i > 0) {
             k = i; if (k > FILE_NAME_LEN-10) k = FILE_NAME_LEN-10;
             for (j = 0; j < k; j++) tmpName[j] = p[j];
@@ -1825,7 +1825,11 @@ IntNative main ( IntNative argc, Char *argv[] )
    copyFileName ( inName,  (Char*)"(none)" );
    copyFileName ( outName, (Char*)"(none)" );
 
-   copyFileName ( progNameReally, argv[0] );
+   if (argc >= 1 && argv[0] != NULL)
+      copyFileName ( progNameReally, argv[0] );
+   else
+      copyFileName ( progNameReally, (Char*)"bzip2" );
+
    progName = &progNameReally[0];
    for (tmp = &progNameReally[0]; *tmp != '\0'; tmp++)
       if (*tmp == PATH_SEP) progName = tmp + 1;