[libc] fix woa64 fenv implementation

[SchrodingerZhu]

Changing name type to match x86-64. This resolves definition conflicts with core_crt headers.

fix #119154

[llvmbot]

@llvm/pr-subscribers-libc

Author: Schrodinger ZHU Yifan (SchrodingerZhu)

Changes

Use push_macro/pop_macro to avoid UNDERFLOW OVERFLOW conflict with core_crt headers. fix #119154.

---

Full diff: https://github.com/llvm/llvm-project/pull/119155.diff

1 Files Affected:

• (modified) libc/src/__support/FPUtil/aarch64/FEnvImpl.h (+6-1)

diff --git a/libc/src/__support/FPUtil/aarch64/FEnvImpl.h b/libc/src/__support/FPUtil/aarch64/FEnvImpl.h
index 3cea9772154fc6..ff3485de4a007d 100644
--- a/libc/src/__support/FPUtil/aarch64/FEnvImpl.h
+++ b/libc/src/__support/FPUtil/aarch64/FEnvImpl.h
@@ -26,7 +26,10 @@
 
 namespace LIBC_NAMESPACE_DECL {
 namespace fputil {
-
+#pragma push_macro("OVERFLOW")
+#undef OVERFLOW
+#pragma push_macro("UNDERFLOW")
+#undef UNDERFLOW
 struct FEnv {
   struct FPState {
     uint32_t ControlWord;
@@ -279,6 +282,8 @@ LIBC_INLINE int set_env(const fenv_t *envp) {
   return 0;
 }
 
+#pragma pop_macro("UNDERFLOW")
+#pragma pop_macro("OVERFLOW")
 } // namespace fputil
 } // namespace LIBC_NAMESPACE_DECL