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patch 9.0.0742: reading past end of the line when compiling a function

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Problem:    Reading past end of the line when compiling a function with
            errors.
Solution:   Do not return an invalid pointer.  Fix skipping redirection.
This commit is contained in:
Bram Moolenaar
2022-10-13 16:12:57 +01:00
parent d93009eb35
commit 3558afe9e9
5 changed files with 136 additions and 33 deletions
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62
src/vim9cmds.c
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@@ -2412,34 +2412,37 @@ compile_redir(char_u *line, exarg_T *eap, cctx_T *cctx)
{
if (STRNCMP(arg, "END", 3) == 0)
{
if (lhs->lhs_append)
if (cctx->ctx_skip != SKIP_YES)
{
// First load the current variable value.
if (compile_load_lhs_with_index(lhs, lhs->lhs_whole,
if (lhs->lhs_append)
{
// First load the current variable value.
if (compile_load_lhs_with_index(lhs, lhs->lhs_whole,
cctx) == FAIL)
return NULL;
}
return NULL;
}
// Gets the redirected text and put it on the stack, then store it
// in the variable.
generate_instr_type(cctx, ISN_REDIREND, &t_string);
// Gets the redirected text and put it on the stack, then store
// it in the variable.
generate_instr_type(cctx, ISN_REDIREND, &t_string);
if (lhs->lhs_append)
generate_CONCAT(cctx, 2);
if (lhs->lhs_append)
generate_CONCAT(cctx, 2);
if (lhs->lhs_has_index)
{
// Use the info in "lhs" to store the value at the index in the
// list or dict.
if (compile_assign_unlet(lhs->lhs_whole, lhs, TRUE,
if (lhs->lhs_has_index)
{
// Use the info in "lhs" to store the value at the index in
// the list or dict.
if (compile_assign_unlet(lhs->lhs_whole, lhs, TRUE,
&t_string, cctx) == FAIL)
return NULL;
}
else if (generate_store_lhs(cctx, lhs, -1, FALSE) == FAIL)
return NULL;
}
else if (generate_store_lhs(cctx, lhs, -1, FALSE) == FAIL)
return NULL;
VIM_CLEAR(lhs->lhs_name);
VIM_CLEAR(lhs->lhs_whole);
VIM_CLEAR(lhs->lhs_name);
VIM_CLEAR(lhs->lhs_whole);
}
return arg + 3;
}
emsg(_(e_cannot_nest_redir));
@@ -2465,13 +2468,20 @@ compile_redir(char_u *line, exarg_T *eap, cctx_T *cctx)
if (need_type(&t_string, lhs->lhs_member_type,
-1, 0, cctx, FALSE, FALSE) == FAIL)
return NULL;
generate_instr(cctx, ISN_REDIRSTART);
lhs->lhs_append = append;
if (lhs->lhs_has_index)
if (cctx->ctx_skip == SKIP_YES)
{
lhs->lhs_whole = vim_strnsave(arg, lhs->lhs_varlen_total);
if (lhs->lhs_whole == NULL)
return NULL;
VIM_CLEAR(lhs->lhs_name);
}
else
{
generate_instr(cctx, ISN_REDIRSTART);
lhs->lhs_append = append;
if (lhs->lhs_has_index)
{
lhs->lhs_whole = vim_strnsave(arg, lhs->lhs_varlen_total);
if (lhs->lhs_whole == NULL)
return NULL;
}
}
return arg + lhs->lhs_varlen_total;