Bug 24787 – Error signed integer overflow

Created attachment 1918 Test program The value long.min written as decimal results in an overflow error, both for ldc2 and dmd. long z=-9223372036854775808L; Error: signed integer overflow Compiler used dmd --version DMD64 D Compiler v2.109.0-rc.1 Copyright (C) 1999-2024 by The D Language Foundation, All Rights Reserved written by Walter Bright ldc2 --version LDC - the LLVM D compiler (1.39.0): based on DMD v2.109.1 and LLVM 18.1.6 built with LDC - the LLVM D compiler (1.39.0)

That expression gets parsed as -(9223372036854775808L), and 9223372036854775808 does not fit in a long, but you require it to be a long with the L suffix. You can remove the L suffix, or replace it with UL, and then the program works. Since this is filed as an enhancement request, what part of this behavior do you want to see changed exactly?

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