cert: Fix FP on pointer types (#3800)

Closes issue 10782

addons/cert.py

@@ -195,7 +195,9 @@ def int31(data, platform):
         if to_value_type is None or not from_values:
             continue
         bits = None
-        if to_value_type.type == 'char':
+        if token.valueType.pointer > 0:
+            bits = platform.pointer_bit
+        elif to_value_type.type == 'char':
             bits = platform.char_bit
         elif to_value_type.type == 'short':
             bits = platform.short_bit

addons/test/cert-test.c

@@ -82,6 +82,11 @@ void int31(int x)
     unsigned char c;
     c = 256;
     c = -1;
+
+    // issue #10782
+    uint16_t * ptr;
+    uint32_t   var = 65536;
+    ptr = (uint16_t *)var;
 }
 
 void env33()