Use a function-domain search in inside_main_func

This changes inside_main_func to search only for functions.

diff --git a/gdb/frame.c b/gdb/frame.c
index 9e286a4272bf1e7b091a9bfaf9bf4ec88deb6f63..fae89cbbc0ac24eb17126b4ce609f2fdee086223 100644 (file)
--- a/gdb/frame.c
+++ b/gdb/frame.c
@@ -2560,13 +2560,9 @@ inside_main_func (frame_info_ptr this_frame)
         symbol with the name of the main function.  In this case we should
         search the full symbols to see if we can find a match.  */
       struct block_symbol bs = lookup_symbol (name, nullptr,
-                                             SEARCH_VFT, nullptr);
+                                             SEARCH_FUNCTION_DOMAIN, nullptr);
 
-      /* We might have found some unrelated symbol.  For example, the
-        Rust compiler can emit both a subprogram and a namespace with
-        the same name in the same scope; and due to how gdb's symbol
-        tables currently work, we can't request the one we'd
-        prefer.  */
+      /* This lookup should always yield a block-valued symbol.  */
       if (bs.symbol != nullptr && bs.symbol->aclass () == LOC_BLOCK)
        {
          const struct block *block = bs.symbol->value_block ();