X-Git-Url: http://winboard.nl/cgi-bin?a=blobdiff_plain;f=xoptions.c;h=926f905222f1d9382c0355f6c07616061e49ea3f;hb=259aca883470b6cd7fc47e417475f05120400d3c;hp=c1ae4273af14fc52c5c55bde4704a23d3779f573;hpb=005ffb141611bf0b56f72b54548705549c7a04ec;p=xboard.git

diff --git a/xoptions.c b/xoptions.c
index c1ae427..926f905 100644
--- a/xoptions.c
+++ b/xoptions.c
@@ -155,7 +155,7 @@ void SpinCallback(w, client_data, call_data)
     String name, val;
     Arg args[16];
     char buf[MSG_SIZ], *p;
-    int j;
+    int j = 0; // Initialiasation is necessary because the text value may be non-numeric causing the scanf conversion to fail
     int data = (intptr_t) client_data;
 
     XtSetArg(args[0], XtNlabel, &name);
@@ -838,6 +838,7 @@ int GenericReadout(int selected)
 		case Fractional:
 		    XtSetArg(args[0], XtNstring, &val);
 		    XtGetValues(currentOption[i].handle, args, 1);
+		    x = 0.0; // Initialise because sscanf() will fail if non-numeric text is entered
 		    sscanf(val, "%f", &x);
 		    if(x > currentOption[i].max) x = currentOption[i].max;
 		    if(x < currentOption[i].min) x = currentOption[i].min;