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I1401: Protect character conversions from garbage files (COVERITY)

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Bob Supnik 2017-03-09 19:37:02 -08:00 committed by Mark Pizzolato
parent 417b85f0d6
commit 300bfaa3c0
1 changed files with 6 additions and 5 deletions
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11
I1401/i1401_cd.c
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@ -1,6 +1,6 @@
/* i1401_cd.c: IBM 1402 card reader/punch
Copyright (c) 1993-2016, Robert M. Supnik
Copyright (c) 1993-2017, Robert M. Supnik
Permission is hereby granted, free of charge, to any person obtaining a
copy of this software and associated documentation files (the "Software"),
@ -35,6 +35,7 @@
Cards are represented as ASCII text streams terminated by newlines.
This allows cards to be created and edited as normal files.
09-Mar-17 RMS Protect character conversions from gargage files (COVERITY)
05-May-16 RMS Fixed calling sequence inconsistency (Mark Pizzolato)
28-Feb-15 RMS Added read from console
24-Mar-09 RMS Fixed read stacker operation in column binary mode
@ -251,12 +252,12 @@ if (r != SCPE_OK) /* read error? */
if (cbn) { /* column binary? */
for (i = 0; i < CDR_WIDTH; i++) {
if (conv_old) {
c1 = ascii2bcd (cdr_buf[i]);
c2 = ascii2bcd (cdr_buf[CDR_WIDTH + i]);
c1 = ascii2bcd (cdr_buf[i] & 0177);
c2 = ascii2bcd (cdr_buf[CDR_WIDTH + i] & 0177);
}
else {
c1 = ascii2bcd (cdr_buf[2 * i]);
c2 = ascii2bcd (cdr_buf[(2 * i) + 1]);
c1 = ascii2bcd (cdr_buf[2 * i] & 0177);
c2 = ascii2bcd (cdr_buf[(2 * i) + 1] & 0177);
}
M[CD_CBUF1 + i] = (M[CD_CBUF1 + i] & WM) | c1;
M[CD_CBUF2 + i] = (M[CD_CBUF2 + i] & WM) | c2;