gentoo-overlay/app-emulation/wine-vanilla/files/wine-vanilla-7.0-unwind.patch

Fix build with llvm-libunwind, and also fix for non-llvm libunwind
when using clang+bfd given clang doesn't have _Unwind_Find_FDE in
its rtlib and expects it from llvm-libunwind.

The _CONFIG_H_ check is for <llvm-libunwind-15 (adds _VERSION).
--- a/dlls/ntdll/unix/signal_x86_64.c
+++ b/dlls/ntdll/unix/signal_x86_64.c
@@ -635,7 +635,9 @@
     unsigned int cie_offset;
 };
 
+#if defined(_LIBUNWIND_VERSION) || defined(____LIBUNWIND_CONFIG_H__) || !defined(__clang__)
 extern const struct dwarf_fde *_Unwind_Find_FDE (void *, struct dwarf_eh_bases *);
+#endif
 
 static unsigned char dwarf_get_u1( const unsigned char **p )
 {
@@ -1357,7 +1359,7 @@
     unw_proc_info_t info;
     int rc;
 
-#ifdef __APPLE__
+#if defined(__APPLE__) || defined(_LIBUNWIND_VERSION) || defined(____LIBUNWIND_CONFIG_H__)
     rc = unw_getcontext( &unw_context );
     if (rc == UNW_ESUCCESS)
         rc = unw_init_local( &cursor, &unw_context );
@@ -1480,11 +1482,13 @@
 NTSTATUS CDECL unwind_builtin_dll( ULONG type, DISPATCHER_CONTEXT *dispatch, CONTEXT *context )
 {
     struct dwarf_eh_bases bases;
+#if defined(_LIBUNWIND_VERSION) || defined(____LIBUNWIND_CONFIG_H__) || !defined(__clang__)
     const struct dwarf_fde *fde = _Unwind_Find_FDE( (void *)(context->Rip - 1), &bases );
 
     if (fde)
         return dwarf_virtual_unwind( context->Rip, &dispatch->EstablisherFrame, context, fde,
                                      &bases, &dispatch->LanguageHandler, &dispatch->HandlerData );
+#endif
 #ifdef HAVE_LIBUNWIND
     return libunwind_virtual_unwind( context->Rip, &dispatch->EstablisherFrame, context,
                                      &dispatch->LanguageHandler, &dispatch->HandlerData );