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patch 8.2.2977: crash when using a null function reference

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Problem:    Crash when using a null function reference. (Naohiro Ono)
Solution:   Check for an invalid function name. (closes #8367)
This commit is contained in:
Bram Moolenaar 2021-06-12 12:16:55 +02:00
parent 8de901e1f1
commit 22db0d549f
4 changed files with 15 additions and 1 deletions
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2
src/errors.h
View File

@ -425,3 +425,5 @@ EXTERN char e_nr_arguments_too_few[]
INIT(= N_("E1190: %d arguments too few"));
EXTERN char e_call_to_function_that_failed_to_compile_str[]
INIT(= N_("E1191: Call to function that failed to compile: %s"));
EXTERN char e_empty_function_name[]
INIT(= N_("E1192: Empty function name"));

8
src/eval.c
View File

@ -3772,7 +3772,14 @@ call_func_rettv(
s = partial_name(pt);
}
else
{
s = functv.vval.v_string;
if (s == NULL || *s == NUL)
{
emsg(_(e_empty_function_name));
goto theend;
}
}
}
else
s = (char_u *)"";
@ -3786,6 +3793,7 @@ call_func_rettv(
funcexe.basetv = basetv;
ret = get_func_tv(s, -1, rettv, arg, evalarg, &funcexe);
theend:
// Clear the funcref afterwards, so that deleting it while
// evaluating the arguments is possible (see test55).
if (evaluate)

4
src/testdir/test_functions.vim
View File

@ -2174,9 +2174,11 @@ func Test_call()
call assert_fails("call call('Mylen', [], 0)", 'E715:')
call assert_fails('call foo', 'E107:')
" This once caused a crash.
" These once caused a crash.
call call(test_null_function(), [])
call call(test_null_partial(), [])
call assert_fails('call test_null_function()()', 'E1192:')
call assert_fails('call test_null_partial()()', 'E117:')
endfunc
func Test_char2nr()

2
src/version.c
View File

@ -750,6 +750,8 @@ static char *(features[]) =
static int included_patches[] =
{ /* Add new patch number below this line */
/**/
2977,
/**/
2976,
/**/