Guard against output tape record growing too large.

larsbrinkhoff · larsbrinkhoff · commit b1970013b124 · 2024-03-02T12:07:21.000+01:00
diff --git a/libword/tape-word.c b/libword/tape-word.c
@@ -380,6 +380,12 @@ write_tape_word (FILE *f, word_t word)
     }
   beginning_of_tape = 0;
 
+  if (reclen == sizeof record)
+    {
+      fprintf (stderr, "Output tape record too large.\n");
+      exit (1);
+    }
+
   record[reclen++] = word;
 }
 

Original file line number	Diff line number	Diff line change
`@@ -380,6 +380,12 @@ write_tape_word (FILE *f, word_t word)`
`380`	`380`	`}`
`381`	`381`	`beginning_of_tape = 0;`
`382`	`382`
	`383`	`+ if (reclen == sizeof record)`
	`384`	`+ {`
	`385`	`+ fprintf (stderr, "Output tape record too large.\n");`
	`386`	`+ exit (1);`
	`387`	`+ }`
	`388`	`+`
`383`	`389`	`record[reclen++] = word;`
`384`	`390`	`}`
`385`	`391`