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PDP11, All VAX: fix CID: 1415538, 1415766 ("Dereference before null check")

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Sergey Svishchev 2017-03-09 17:19:09 -08:00 • committed by Mark Pizzolato
parent abc1afc07e
commit 4bee16578a
1 changed files with 3 additions and 1 deletions
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4
PDP11/pdp11_io_lib.c
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@ -839,8 +839,10 @@ if (autcon_enb == 0) /* enabled? */
return SCPE_OK; return SCPE_OK;
if (name) { /* updating? */ if (name) { /* updating? */
dptr = find_dev (name); dptr = find_dev (name);
if (dptr == NULL)
return SCPE_ARG;
dibp = (DIB *) dptr->ctxt; /* get DIB */ dibp = (DIB *) dptr->ctxt; /* get DIB */
if ((nctrl < 0) || (dptr == NULL) || (dibp == NULL)) if ((nctrl < 0) || (dibp == NULL))
return SCPE_ARG; return SCPE_ARG;
dibp->numc = nctrl; dibp->numc = nctrl;
} }