From b9e717367c395490149495cf375911b5d9de889e Mon Sep 17 00:00:00 2001 From: Bram Moolenaar Date: Sat, 23 Jul 2022 06:53:08 +0100 Subject: [PATCH] patch 9.0.0060: accessing uninitialized memory when completing long line Problem: Accessing uninitialized memory when completing long line. Solution: Terminate string with NUL. --- src/insexpand.c | 1 + src/testdir/test_ins_complete.vim | 7 +++++++ 2 files changed, 8 insertions(+) diff --git a/src/insexpand.c b/src/insexpand.c index b1114b5..88dbac6 100644 --- a/src/insexpand.c +++ b/src/insexpand.c @@ -526,6 +526,7 @@ ins_compl_infercase_gettext( // growarray. Add the character in the next round. if (ga_grow(&gap, IOSIZE) == FAIL) return (char_u *)"[failed]"; + *p = NUL; STRCPY(gap.ga_data, IObuff); gap.ga_len = (int)STRLEN(IObuff); } diff --git a/src/testdir/test_ins_complete.vim b/src/testdir/test_ins_complete.vim index aa054f2..5e7353c 100644 --- a/src/testdir/test_ins_complete.vim +++ b/src/testdir/test_ins_complete.vim @@ -408,6 +408,13 @@ func Test_infercase_very_long_line() exe "normal 2Go\\\" call assert_equal(longLine, getline(3)) + " check that the too long text is NUL terminated + %del + norm o + norm 1987ax + exec "norm ox\\" + call assert_equal(repeat('x', 1987), getline(3)) + bwipe! set noic noinfercase endfunc -- 2.27.0