libfoundation: Correct relative ! and & operator precedence.

peter-b · peter-b · commit f828e9f8a3be · 2016-06-27T16:59:30.000+01:00
`!` actually has higher precedence than `&amp;`, so the following doesn't
do what you expect:

    !int_value &amp; kBitFlag
diff --git a/libfoundation/src/foundation-list.cpp b/libfoundation/src/foundation-list.cpp
@@ -99,7 +99,7 @@ bool MCListCopy(MCListRef self, MCListRef& r_list)
 	__MCAssertIsList(self);
     
     // If we are immutable, just bump the reference count
-    if (!self -> flags & kMCListFlagIsMutable)
+	if (!(self -> flags & kMCListFlagIsMutable))
     {
         r_list = MCValueRetain(self);
         return true;

Original file line number	Diff line number	Diff line change
`@@ -99,7 +99,7 @@ bool MCListCopy(MCListRef self, MCListRef& r_list)`
`99`	`99`	`__MCAssertIsList(self);`
`100`	`100`
`101`	`101`	`// If we are immutable, just bump the reference count`
`102`		`- if (!self -> flags & kMCListFlagIsMutable)`
	`102`	`+ if (!(self -> flags & kMCListFlagIsMutable))`
`103`	`103`	`{`
`104`	`104`	`r_list = MCValueRetain(self);`
`105`	`105`	`return true;`