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

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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.
This commit is contained in:
Bram Moolenaar
2021-05-09 23:19:22 +02:00
parent 918b08957c
commit 68db996b62
9 changed files with 65 additions and 9 deletions
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16
src/vim9compile.c
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@@ -8375,15 +8375,31 @@ compile_mult_expr(char_u *arg, int cmdidx, cctx_T *cctx)
{
char_u *p = arg;
char_u *prev = arg;
char_u *expr_start;
int count = 0;
int start_ctx_lnum = cctx->ctx_lnum;
garray_T *stack = &cctx->ctx_type_stack;
type_T *type;
for (;;)
{
if (ends_excmd2(prev, p))
break;
expr_start = p;
if (compile_expr0(&p, cctx) == FAIL)
return NULL;
if (cctx->ctx_skip != SKIP_YES)
{
// check for non-void type
type = ((type_T **)stack->ga_data)[stack->ga_len - 1];
if (type->tt_type == VAR_VOID)
{
semsg(_(e_expression_does_not_result_in_value_str), expr_start);
return NULL;
}
}
++count;
prev = p;
p = skipwhite(p);