[libc][errno] Remove unnecessary include

[robincaloudis]

Since #91150, a proxy header for the errno macros is available and gets included in libc_errno.h since then.

As libc_errno.cpp includes libc_errno.h, which already includes the proxy header hdr/errno_macros.h, there's no need to include it in libc_errno.cpp if we are in overlay mode, because the proxy header takes care to either include our header from libc/include/ (fullbuild) or the corresponding underlying system header (overlay).

[llvmbot]

@llvm/pr-subscribers-libc

Author: Robin Caloudis (robincaloudis)

Changes

Since #91150, a proxy header for the errno macros is available and gets included in libc_errno.h since then.

As libc_errno.cpp includes libc_errno.h, which already includes the proxy header hdr/errno_macros.h, there's no need to include it in libc_errno.cpp if we are in overlay mode, because the proxy header takes care to either include our header from libc/include/ (fullbuild) or the corresponding underlying system header (overlay).

---

Full diff: https://github.com/llvm/llvm-project/pull/92063.diff

1 Files Affected:

• (modified) libc/src/errno/libc_errno.cpp (-3)

diff --git a/libc/src/errno/libc_errno.cpp b/libc/src/errno/libc_errno.cpp
index a59e6c34029d7..64f9f522ca296 100644
--- a/libc/src/errno/libc_errno.cpp
+++ b/libc/src/errno/libc_errno.cpp
@@ -36,9 +36,6 @@ void LIBC_NAMESPACE::Errno::operator=(int a) { __llvmlibc_errno = a; }
 LIBC_NAMESPACE::Errno::operator int() { return __llvmlibc_errno; }
 
 #else
-// In overlay mode, we simply use the system errno.
-#include "hdr/errno_macros.h"
-
 void LIBC_NAMESPACE::Errno::operator=(int a) { errno = a; }
 LIBC_NAMESPACE::Errno::operator int() { return errno; }