[PATCH] c: Fix crash in c-typeck.cc convert_arguments with indirect calls

[Florian Weimer]

gcc/c/

        PR c/120055
        * c-typeck.cc (convert_arguments): Check if fundecl is null
        before checking for builtin function declaration.

---
 gcc/c/c-typeck.cc | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/gcc/c/c-typeck.cc b/gcc/c/c-typeck.cc
index c7a13bf2b2f..9fd568feee3 100644
--- a/gcc/c/c-typeck.cc
+++ b/gcc/c/c-typeck.cc
@@ -4337,7 +4337,7 @@ convert_arguments (location_t loc, vec<location_t> 
arg_loc, tree fntype,
        }
 
       if (!typetail && parmnum == 0 && !TYPE_NO_NAMED_ARGS_STDARG_P (fntype)
-         && !fndecl_built_in_p (fundecl))
+         && fundecl && !fndecl_built_in_p (fundecl))
        {
          auto_diagnostic_group d;
          bool warned;

base-commit: fd013e3fe47f2623b581213c6d7c08bdbd5b1614