1 files changed, 17 insertions, 0 deletions
diff --git a/converter/pbm/pbmtonokia.c b/converter/pbm/pbmtonokia.c
index 26e60358..ebcd813d 100644
--- a/converter/pbm/pbmtonokia.c
+++ b/converter/pbm/pbmtonokia.c
@@ -153,6 +153,21 @@ freeCmdline(struct cmdlineInfo const cmdline) {
 
 
 static void
+validateSize(unsigned int const cols,
+             unsigned int const rows){
+
+    if (cols > 255)
+        pm_error("This program cannot handle files with more than 255 "
+                 "columns");
+    if (rows > 255)
+        pm_error("This program cannot handle files with more than 255 "
+                 "rows");
+}
+
+
+
+
+static void
 convertToHexNol(bit **       const image,
                 unsigned int const cols,
                 unsigned int const rows,
@@ -456,6 +471,8 @@ main(int    argc,
     bits = pbm_readpbm(ifP, &cols, &rows);
     pm_close(ifP);
 
+    validateSize(cols, rows);
+
     switch (cmdline.outputFormat) {
     case FMT_HEX_NGG:
         convertToHexNgg(bits, cols, rows, stdout);