dnsmasq

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Petr Menšík 2f45670951 Add safety checks to places pointed by Coverity

GCC Analyzer (experimental)

1. dnsmasq-2.85/src/forward.c:0: scope_hint: In function 'allocate_rfd.part.0'
2. dnsmasq-2.85/src/forward.c:2321:18: warning[-Wanalyzer-null-dereference]: dereference of NULL 'rfd'
 #  2319|     *fdlp = rfl;
 #  2320|
 #  2321|->   return rfl->rfd->fd;
 #  2322|   }
 #  2323|

1. dnsmasq-2.85/src/cache.c:0: scope_hint: In function 'log_query'
2. dnsmasq-2.85/src/cache.c:1969:20: warning[-Wanalyzer-null-dereference]: dereference of NULL 'name'
 #  1967|       source = "cached";
 #  1968|
 #  1969|->   if (strlen(name) == 0)
 #  1970|       name = ".";
 #  1971|

1. dnsmasq-2.85/src/cache.c:0: scope_hint: In function 'cache_scan_free'
2. dnsmasq-2.85/src/cache.c:436:20: warning[-Wanalyzer-null-argument]: use of NULL 'addr' where non-null expected
40. /usr/include/sys/un.h:37: included_from: Included from here.
41. dnsmasq-2.85/src/dnsmasq.h:101: included_from: Included from here.
42. dnsmasq-2.85/src/cache.c:17: included_from: Included from here.
43. /usr/include/string.h:64:12: note: argument 2 of 'memcmp' must be non-null
 #   434|   		   (flags & crecp->flags & F_REVERSE) &&
 #   435|   		   (flags & crecp->flags & (F_IPV4 | F_IPV6)) &&
 #   436|-> 		   memcmp(&crecp->addr, addr, addrlen) == 0)
 #   437|   	    {
 #   438|   	      *up = crecp->hash_next;

2021-09-11 14:48:17 +01:00