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patch 8.1.1895: using NULL pointer when out of memory

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Problem:    Using NULL pointer when out of memory.
Solution:   Bail out or skip the code using the pointer. (Zu-Ming Jiang,
            closes #4805, closes #4843, closes #4939, closes #4844)
This commit is contained in:
Bram Moolenaar
2019-08-20 22:58:37 +02:00
parent 1058c9d9b5
commit 6f10c70b59
5 changed files with 35 additions and 12 deletions
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7
src/buffer.c
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@@ -181,14 +181,19 @@ open_buffer(
if (curbuf->b_ml.ml_mfp != NULL)
break;
/*
* if there is no memfile at all, exit
* If there is no memfile at all, exit.
* This is OK, since there are no changes to lose.
*/
if (curbuf == NULL)
{
emsg(_("E82: Cannot allocate any buffer, exiting..."));
// Don't try to do any saving, with "curbuf" NULL almost nothing
// will work.
v_dying = 2;
getout(2);
}
emsg(_("E83: Cannot allocate buffer, using other one..."));
enter_buffer(curbuf);
#ifdef FEAT_SYN_HL