test some more possible cases and move test into test/val

test/val/bug1252.c

@@ -0,0 +1,45 @@
+
+// bug #1252 - inline asm: cc65 chokes on label ref if space/tab follows
+
+#include <stdlib.h>
+
+int main(void)
+{
+// first test the recommended way to use labels in inline assembly:
+
+// this works
+c_label:
+  asm("inx\n"
+      "bne %g\n",
+      c_label);
+
+// this does not work
+c_label2:
+  asm("inx\n"
+      "bne %g        \n",
+      c_label2);
+
+// now the following is from the original bug report. note that using labels
+// this way only works by chance - the name of the label may clash with
+// generated labels
+
+// this works
+  asm("label1: inx\n"
+      "bne label1\n");
+
+// this does not work
+  asm("label2: inx\n"
+      "bne label2        \n");
+
+// a variant of the above using local labels.
+
+// this works
+  asm("@label1: inx\n"
+      "bne @label1\n");
+
+// this does not work
+  asm("@label2: inx\n"
+      "bne @label2        \n");
+
+    return EXIT_SUCCESS;
+}