This patch checks negative number literals (like -1) at the parser stage, so that invalid values are caught at compile time. Currently this is only done for negative integers at the normalizestatementmodifiers stage. This is also important for BOO-1, so that literal processor macros receive sign information ("-" at the beginning of the literal).. print(-1.0) print(-1) print(-1h) print(- 1.0) print(-0xAA) x = 2147483648 //error, value one too big for an int: xlong = 9223372036854775807L //ok, max value allowed for long