patch 8.2.2977: crash when using a null function reference
Problem: Crash when using a null function reference. (Naohiro Ono)
Solution: Check for an invalid function name. (closes #8367)
diff --git a/src/eval.c b/src/eval.c
index b6bee5a..0d15a70 100644
--- a/src/eval.c
+++ b/src/eval.c
@@ -3772,7 +3772,14 @@
s = partial_name(pt);
}
else
+ {
s = functv.vval.v_string;
+ if (s == NULL || *s == NUL)
+ {
+ emsg(_(e_empty_function_name));
+ goto theend;
+ }
+ }
}
else
s = (char_u *)"";
@@ -3786,6 +3793,7 @@
funcexe.basetv = basetv;
ret = get_func_tv(s, -1, rettv, arg, evalarg, &funcexe);
+theend:
// Clear the funcref afterwards, so that deleting it while
// evaluating the arguments is possible (see test55).
if (evaluate)