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--- gzip-1.2.4/gzip.c Thu Aug 19 15:39:43 1993
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+++ gzip-1.2.4b/gzip.c Tue Jan 8 21:44:18 2002
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@@ -1005,7 +1005,14 @@
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#ifdef NO_MULTIPLE_DOTS
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char *dot; /* pointer to ifname extension, or NULL */
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#endif
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+ int max_suffix_len = (z_len > 3 ? z_len : 3);
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+ /* Leave enough room in ifname or ofname for suffix: */
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+ if (strlen(iname) >= sizeof(ifname) - max_suffix_len) {
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+ strncpy(ifname, iname, sizeof(ifname) - 1);
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+ /* last byte of ifname is already zero and never overwritten */
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+ error("file name too long");
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+ }
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strcpy(ifname, iname);
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/* If input file exists, return OK. */
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