Add proper error checking in asciihex2int functions

[emu8051.git] / src / gtk / regwin.c

diff --git a/src/gtk/regwin.c b/src/gtk/regwin.c
index 2358685..d3fcb8d 100644 (file)
--- a/src/gtk/regwin.c
+++ b/src/gtk/regwin.c
@@ -88,10 +88,16 @@ regwin_cell_edited(GtkCellRendererText *cell, gchar *path_string,
        /* Read current (old) value. */
        gtk_tree_model_get(model, &iter, COL_VAL, &str, -1);
 
+       /* No need to check error, has already been validated. */
        old = asciihex2int(str);
        log_info("  old value: $%04X", old);
 
        new = asciihex2int(new_str);
+       if (asciihex2int_get_error()) {
+               log_warn("  new value: invalid");
+               return;
+       }
+
        log_info("  new value: $%04X", new);
 
        /* Store new value in emulator register (if in range). */