Merge pull request #64252 from aschwaighofer/no_opaque_pointers_under_lto

Fix the minimal/lto configuration

Author: aschwaighofer

stdlib/cmake/modules/AddSwiftStdlib.cmake

@@ -137,6 +137,9 @@ function(_add_target_variant_c_compile_link_flags)
   _compute_lto_flag("${CFLAGS_ENABLE_LTO}" _lto_flag_out)
   if (_lto_flag_out)
     list(APPEND result "${_lto_flag_out}")
+    # Disable opaque pointers in lto mode.
+    list(APPEND result "-Xclang")
+    list(APPEND result "-no-opaque-pointers")
   endif()
 
   set("${CFLAGS_RESULT_VAR_NAME}" "${result}" PARENT_SCOPE)