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snprintf() is a macro on some operating systems
and having #ifdef statements in macro parameters has undefined behavior.
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parent
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12
src/tun.c
12
src/tun.c
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@ -449,6 +449,7 @@ tun_setip(const char *ip, const char *other_ip, int netbits)
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struct in_addr addr;
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DWORD len;
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#endif
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const char *display_ip;
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netmask = 0;
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for (i = 0; i < netbits; i++) {
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@ -462,15 +463,16 @@ tun_setip(const char *ip, const char *other_ip, int netbits)
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return 1;
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}
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#ifndef WINDOWS32
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# ifdef FREEBSD
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display_ip = other_ip; /* FreeBSD wants other IP as second IP */
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# else
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display_ip = ip;
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# endif
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snprintf(cmdline, sizeof(cmdline),
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IFCONFIGPATH "ifconfig %s %s %s netmask %s",
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if_name,
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ip,
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#ifdef FREEBSD
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other_ip, /* FreeBSD wants other IP as second IP */
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#else
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ip,
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#endif
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display_ip,
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inet_ntoa(net));
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fprintf(stderr, "Setting IP of %s to %s\n", if_name, ip);
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