From 12c8fb857c97f97a0351eecc94e97e71b04cda70 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?=E7=8E=8B=E5=AE=87=E9=80=B8?= <Strawberry_Str@hotmail.com>
Date: Fri, 16 May 2025 17:47:29 +0800
Subject: [PATCH] Fix fname for miri

---
 src/tools/miri/src/shims/native_lib.rs | 7 ++++++-
 1 file changed, 6 insertions(+), 1 deletion(-)

diff --git a/src/tools/miri/src/shims/native_lib.rs b/src/tools/miri/src/shims/native_lib.rs
index 0258a76c3e70..837e1b31cac5 100644
--- a/src/tools/miri/src/shims/native_lib.rs
+++ b/src/tools/miri/src/shims/native_lib.rs
@@ -117,7 +117,12 @@ trait EvalContextExtPriv<'tcx>: crate::MiriInterpCxExt<'tcx> {
         let mut info = std::mem::MaybeUninit::<libc::Dl_info>::uninit();
         unsafe {
             if libc::dladdr(*func.deref() as *const _, info.as_mut_ptr()) != 0 {
-                if std::ffi::CStr::from_ptr(info.assume_init().dli_fname).to_str().unwrap()
+                let info = info.assume_init();
+                #[cfg(target_os = "cygwin")]
+                let fname_ptr = info.dli_fname.as_ptr();
+                #[cfg(not(target_os = "cygwin"))]
+                let fname_ptr = info.dli_fname;
+                if std::ffi::CStr::from_ptr(fname_ptr).to_str().unwrap()
                     != _lib_path.to_str().unwrap()
                 {
                     return None;