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ls: check that pointer is not nil before calling qsort

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Passing a null pointer to qsort is an error in C (GCC and Clang agree
with the standards there, so this is no joke).

Change-Id: Ia2b015793a75ea4e85ae8f47da6beead9c4290e6
This commit is contained in:
Neven Sajko 2016-05-28 03:13:35 +02:00 committed by David du Colombier
parent d6f8c236b8
commit 8cd46ae7bc
1 changed files with 1 additions and 1 deletions
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2
src/cmd/ls.c
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@ -143,7 +143,7 @@ output(void)
char buf[4096];
char *s;
if(!nflag)
if(!nflag && dirbuf!=0)
qsort(dirbuf, ndir, sizeof dirbuf[0], (int (*)(const void*, const void*))compar);
for(i=0; i<ndir; i++)
dowidths(dirbuf[i].d);