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`~a'', `~i'' etc. cause vi to core dump

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if the (file)buffer is empty (line=1, colum=0, len=0)

Submitted by:	batie@agora.rdrop.com (Alan Batie)
This commit is contained in:
Wolfram Schneider 1996-03-03 15:47:43 +00:00
parent c55acb6213
commit 2868020397
Notes: svn2git 2020-12-20 02:59:44 +00:00 
svn path=/head/; revision=14357
1 changed files with 5 additions and 1 deletions
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6
usr.bin/vi/vi/v_ulcase.c
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@ -84,6 +84,7 @@ v_ulcase(sp, ep, vp)
u_long cnt;
char *p;
len = 0;
lno = vp->m_start.lno;
cno = vp->m_start.cno;
@ -120,7 +121,10 @@ v_ulcase(sp, ep, vp)
/* Check to see if we tried to move past EOF. */
if (file_gline(sp, ep, vp->m_final.lno, &len) == NULL) {
(void)file_gline(sp, ep, --vp->m_final.lno, &len);
/* line number start with 1, lno zero is illegal */
if (vp->m_final.lno > 1)
--vp->m_final.lno;
(void)file_gline(sp, ep, vp->m_final.lno, &len);
vp->m_final.cno = len == 0 ? 0 : len - 1;
}
return (0);