https://gcc.gnu.org/bugzilla/show_bug.cgi?id=109853
Bug ID: 109853
Summary: WIN64 is a predefined constant on GCC MinGW-w64
Product: gcc
Version: 13.1.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: rust
Assignee: unassigned at gcc dot gnu.org
Reporter: mehdi.chinoune at hotmail dot com
CC: dkm at gcc dot gnu.org, gcc-rust at gcc dot gnu.org
Target Milestone: ---
Building rust on MinGW-w64 fails because rust uses WIN64 as member of ABI enum
in gcc/rust/util/rust-abi.h
```
...
enum ABI
{
UNKNOWN,
RUST,
INTRINSIC,
C,
CDECL,
STDCALL,
FASTCALL,
WIN64,
SYSV64
};
...
```
WIN64 is a defined to 1 on MinGW-w64
```
$ echo | gcc -dM -E - | grep WIN64
#define _WIN64 1
#define __WIN64 1
#define __WIN64__ 1
#define WIN64 1
```
So, Please consider choosing a different name for Windows ABI.
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