http://d.puremagic.com/issues/show_bug.cgi?id=4835
Summary: DMD should warn about integer overflow in computed constant Product: D Version: D2 Platform: x86_64 OS/Version: Linux Status: NEW Severity: enhancement Priority: P2 Component: DMD AssignedTo: nob...@puremagic.com ReportedBy: lars.holo...@gmail.com --- Comment #0 from Lars Holowko <lars.holo...@gmail.com> 2010-09-07 10:09:23 PDT --- I got bitten by this when I wanted to create a 6GB large file to test 64 bit support in std.stdio with dmd 2.048. The output of: import std.stdio; void main(string args[]) { long l_dangerous = 1024 * 1024 * 1024 * 6; writefln("l_dangerous = 0x%x", l_dangerous); writefln("l_dangerous = %s", l_dangerous); long l_ok = 1024 * 1024 * 1024 * 6L; writefln("l_ok = 0x%x", l_ok); writefln("l_ok = %s", l_ok); return; } is l_dangerous = 0xffffffff80000000 l_dangerous = -2147483648 l_ok = 0x180000000 l_ok = 6442450944 dmd 2.048 did not issue a warning about the integer overflow (neither with or without -w) -- Configure issuemail: http://d.puremagic.com/issues/userprefs.cgi?tab=email ------- You are receiving this mail because: -------