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patch 9.0.2172: Vim9: compiling :defer may fail

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Problem:  Vim9: compiling :defer may fail
Solution: compile defer, when ctx_skip is not SKIP_YES

compiling defer fails in an if statement with false condition,
so check the ctx_skip value when compiling :defer

fixes:  #13698
closes: #13702

Signed-off-by: Yegappan Lakshmanan <yegappan@yahoo.com>
Signed-off-by: Christian Brabandt <cb@256bit.org>
This commit is contained in:
Yegappan Lakshmanan 2023-12-16 14:36:08 +01:00 committed by Christian Brabandt
parent 535e8f5941
commit a185a31fc0
No known key found for this signature in database
GPG Key ID: F3F92DA383FDDE09
3 changed files with 38 additions and 19 deletions
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13
src/testdir/test_vim9_script.vim
View File

@ -4783,6 +4783,19 @@ def Test_multidefer_with_exception()
v9.CheckSourceSuccess(lines)
enddef
" Test for using ":defer" inside an if statement with a false condition
def Test_defer_skipped()
var lines =<< trim END
def Foo()
if false
defer execute('echow "hello"', "")
endif
enddef
defcompile
END
v9.CheckSourceSuccess(lines)
enddef
" Keep this last, it messes up highlighting.
def Test_substitute_cmd()
new

2
src/version.c
View File

@ -705,7 +705,7 @@ static char *(features[]) =
static int included_patches[] =
{ /* Add new patch number below this line */
/**/
2171,
2172,
/**/
2170,
/**/

6
src/vim9cmds.c
View File

@ -2020,18 +2020,23 @@ compile_defer(char_u *arg_start, cctx_T *cctx)
*paren = '(';
// check for function type
if (cctx->ctx_skip != SKIP_YES)
{
type = get_type_on_stack(cctx, 0);
if (type->tt_type != VAR_FUNC)
{
emsg(_(e_function_name_required));
return NULL;
}
}
// compile the arguments
arg = skipwhite(paren + 1);
if (compile_arguments(&arg, cctx, &argcount, CA_NOT_SPECIAL) == FAIL)
return NULL;
if (cctx->ctx_skip != SKIP_YES)
{
if (func_idx >= 0)
{
type2_T *argtypes = NULL;
@ -2050,6 +2055,7 @@ compile_defer(char_u *arg_start, cctx_T *cctx)
return NULL;
if (generate_DEFER(cctx, defer_var_idx - 1, argcount) == FAIL)
return NULL;
}
return skipwhite(arg);
}