Bug 20923 – Redefinition of 'size_t' is affecting TypeStruct functions

Code: ================ module app; alias c_ulong = ulong; extern(C) { alias size_t = c_ulong; struct S { real not_reproduceable_without_this_variable; } } ================ Try to compile: $ dmd -c -m32 app.d Error: cannot implicitly convert expression h of type ulong to uint Error message isn't contains filename and line number, but contains reference to unknown h expression.

The redefinition of size_t is affecting builtin TypeStruct functions (these don't have location info), this is clearly a bug. The code should work and you can change size_t but if you are intended to do it for this kind of methods you should be modifying object.d.

@BorisCarvajal created dlang/dmd pull request #11264 "Fix Issue 20923 - Redefinition of 'size_t' is affecting TypeStruct fu…" fixing this issue: - Fix Issue 20923 - Redefinition of 'size_t' is affecting TypeStruct functions https://github.com/dlang/dmd/pull/11264

dlang/dmd pull request #11264 "Fix Issue 20923 - Redefinition of 'size_t' is affecting TypeStruct fu…" was merged into stable: - 70a3fd5ccac1c2d45c074f2712d5fc0b85386839 by Boris Carvajal: Fix Issue 20923 - Redefinition of 'size_t' is affecting TypeStruct functions https://github.com/dlang/dmd/pull/11264