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patch 8.2.1202: Vim9: crash when calling a closure from a builtin function

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Problem:    Vim9: crash when calling a closure from a builtin function.
Solution:   Use the current execution context. (closes #6441)
This commit is contained in:
Bram Moolenaar
2020-07-13 20:41:08 +02:00
parent f1a2368d81
commit 08f7a41b0a
3 changed files with 41 additions and 3 deletions
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19
src/testdir/test_vim9_func.vim
View File

@@ -1019,5 +1019,24 @@ def Test_recursive_call()
assert_equal(6765, Fibonacci(20))
enddef
def TreeWalk(dir: string): list<any>
return readdir(dir)->map({_, val ->
fnamemodify(dir .. '/' .. val, ':p')->isdirectory()
? {val : TreeWalk(dir .. '/' .. val)}
: val
})
enddef
def Test_closure_in_map()
mkdir('XclosureDir/tdir', 'p')
writefile(['111'], 'XclosureDir/file1')
writefile(['222'], 'XclosureDir/file2')
writefile(['333'], 'XclosureDir/tdir/file3')
assert_equal(['file1', 'file2', {'tdir': ['file3']}], TreeWalk('XclosureDir'))
delete('XclosureDir', 'rf')
enddef
" vim: ts=8 sw=2 sts=2 expandtab tw=80 fdm=marker

2
src/version.c
View File

@@ -754,6 +754,8 @@ static char *(features[]) =
static int included_patches[] =
{ /* Add new patch number below this line */
/**/
1202,
/**/
1201,
/**/

23
src/vim9execute.c
View File

@@ -461,6 +461,10 @@ call_prepare(int argcount, typval_T *argvars, ectx_T *ectx)
return OK;
}
// Ugly global to avoid passing the execution context around through many
// layers.
static ectx_T *current_ectx = NULL;
/*
* Call a builtin function by index.
*/
@@ -470,12 +474,16 @@ call_bfunc(int func_idx, int argcount, ectx_T *ectx)
typval_T argvars[MAX_FUNC_ARGS];
int idx;
int did_emsg_before = did_emsg;
ectx_T *prev_ectx = current_ectx;
if (call_prepare(argcount, argvars, ectx) == FAIL)
return FAIL;
// Call the builtin function.
// Call the builtin function. Set "current_ectx" so that when it
// recursively invokes call_def_function() a closure context can be set.
current_ectx = ectx;
call_internal_func_by_idx(func_idx, argvars, STACK_TV_BOT(-1));
current_ectx = prev_ectx;
// Clear the arguments.
for (idx = 0; idx < argcount; ++idx)
@@ -749,8 +757,17 @@ call_def_function(
if (partial != NULL)
{
ectx.ec_outer_stack = partial->pt_ectx_stack;
ectx.ec_outer_frame = partial->pt_ectx_frame;
if (partial->pt_ectx_stack == NULL && current_ectx != NULL)
{
// TODO: is this always the right way?
ectx.ec_outer_stack = &current_ectx->ec_stack;
ectx.ec_outer_frame = current_ectx->ec_frame_idx;
}
else
{
ectx.ec_outer_stack = partial->pt_ectx_stack;
ectx.ec_outer_frame = partial->pt_ectx_frame;
}
}
// dummy frame entries