commit 68db996b621b98066fb7ab7028ed5c6aaa3954a8
author Bram Moolenaar <Bram@vim.org> Sun May 09 23:19:22 2021 +0200
committer Bram Moolenaar <Bram@vim.org> Sun May 09 23:19:22 2021 +0200
tree 1f2bdef2e7049b051dcbe12c5effde327322b3eb
parent 918b08957c51ae079f8f456198f8a1869a3d2a4c

patch 8.2.2846: Vim9: "echo Func()" does not give an error for using void

Problem:    Vim9: "echo Func()" does not give an error for a function without
            a return value.
Solution:   Give an error.  Be more specific about why a value is invalid.

src/vim9execute.c

diff --git a/src/vim9execute.c b/src/vim9execute.c
index 29cd5fc..ae4142b 100644
--- a/src/vim9execute.c
+++ b/src/vim9execute.c
@@ -1578,7 +1578,8 @@
 						      || tv->v_type == VAR_JOB)
 			    {
 				SOURCING_LNUM = iptr->isn_lnum;
-				emsg(_(e_inval_string));
+				semsg(_(e_using_invalid_value_as_string_str),
+						    vartype_name(tv->v_type));
 				break;
 			    }
 			    else