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45 lines
1.4 KiB
Plaintext
45 lines
1.4 KiB
Plaintext
--- ../../foo/bwbasic-2.20/bwb_dio.c Sun Nov 26 09:02:18 1995
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+++ bwb_dio.c Thu Jan 16 11:10:58 1997
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@@ -90,7 +90,6 @@
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{
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FILE *fp;
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struct exp_ese *e;
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- int previous_buffer;
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char atbuf[ MAXSTRINGSIZE + 1 ];
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char first[ MAXSTRINGSIZE + 1 ];
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char devname[ MAXSTRINGSIZE + 1 ];
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@@ -98,7 +97,6 @@
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/* initialize */
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mode = req_devnumber = rlen = -1;
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- previous_buffer = FALSE;
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/* get the first expression element up to comma or whitespace */
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@@ -435,7 +433,15 @@
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sprintf( bwb_ebuf, "in bwb_open(): using previously closed file (and buffer)" );
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bwb_debug( bwb_ebuf );
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#endif
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- previous_buffer = TRUE;
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+ /*
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+ * Previous code assumed that buffer was always valid, and
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+ * always the right size. (MJS)
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+ */
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+ if (dev_table[ req_devnumber ].buffer != NULL)
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+ {
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+ free (dev_table[ req_devnumber ].buffer);
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+ dev_table[ req_devnumber ].buffer = NULL;
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+ }
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}
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if ( ( dev_table[ req_devnumber ].mode != DEVMODE_CLOSED ) &&
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@@ -512,7 +518,7 @@
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/* allocate a character buffer for random access */
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- if (( mode == DEVMODE_RANDOM ) && ( previous_buffer != TRUE ))
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+ if ( mode == DEVMODE_RANDOM )
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{
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/* Revised to CALLOC pass-thru call by JBV */
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if ( ( dev_table[ req_devnumber ].buffer = CALLOC( rlen + 1, 1, "bwb_open" )) == NULL )
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