Bug Summary

File:src/usr.sbin/nsd/obj/conftest.c
Warning:line 61, column 3
Value stored to 'pcpcc' is never read

Annotated Source Code

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clang -cc1 -cc1 -triple amd64-unknown-openbsd7.0 -analyze -disable-free -disable-llvm-verifier -discard-value-names -main-file-name conftest.c -analyzer-store=region -analyzer-opt-analyze-nested-blocks -analyzer-checker=core -analyzer-checker=apiModeling -analyzer-checker=unix -analyzer-checker=deadcode -analyzer-checker=security.insecureAPI.UncheckedReturn -analyzer-checker=security.insecureAPI.getpw -analyzer-checker=security.insecureAPI.gets -analyzer-checker=security.insecureAPI.mktemp -analyzer-checker=security.insecureAPI.mkstemp -analyzer-checker=security.insecureAPI.vfork -analyzer-checker=nullability.NullPassedToNonnull -analyzer-checker=nullability.NullReturnedFromNonnull -analyzer-output plist -w -setup-static-analyzer -mrelocation-model pic -pic-level 1 -pic-is-pie -mframe-pointer=all -relaxed-aliasing -fno-rounding-math -mconstructor-aliases -munwind-tables -target-cpu x86-64 -target-feature +retpoline-indirect-calls -target-feature +retpoline-indirect-branches -tune-cpu generic -debugger-tuning=gdb -fcoverage-compilation-dir=/usr/src/usr.sbin/nsd/obj -resource-dir /usr/local/lib/clang/13.0.0 -internal-isystem /usr/local/lib/clang/13.0.0/include -internal-externc-isystem /usr/include -O2 -fdebug-compilation-dir=/usr/src/usr.sbin/nsd/obj -ferror-limit 19 -fwrapv -D_RET_PROTECTOR -ret-protector -fgnuc-version=4.2.1 -vectorize-loops -vectorize-slp -fno-builtin-malloc -fno-builtin-calloc -fno-builtin-realloc -fno-builtin-valloc -fno-builtin-free -fno-builtin-strdup -fno-builtin-strndup -analyzer-output=html -faddrsig -D__GCC_HAVE_DWARF2_CFI_ASM=1 -o /home/ben/Projects/vmm/scan-build/2022-01-12-194120-40624-1 -x c conftest.c
1/* confdefs.h */
2#define PACKAGE_NAME"NSD" "NSD"
3#define PACKAGE_TARNAME"nsd" "nsd"
4#define PACKAGE_VERSION"4.3.9" "4.3.9"
5#define PACKAGE_STRING"NSD 4.3.9" "NSD 4.3.9"
6#define PACKAGE_BUGREPORT"nsd-bugs@nlnetlabs.nl" "nsd-bugs@nlnetlabs.nl"
7#define PACKAGE_URL"" ""
8#define CONFCMDLINE"--prefix=/usr --localstatedir=/var --sysconfdir=/etc --with-ssl=/usr --with-user=_nsd --with-chroot=/var/nsd --with-configdir=/var/nsd/etc --with-pidfile= --with-zonesdir=/var/nsd/zones --with-dbfile= --with-zonelistfile=/var/nsd/db/zone.list --with-xfrdir=/var/nsd/run/xfr --with-xfrdfile=/var/nsd/run/xfrd.state --with-libevent=/usr --enable-ratelimit --enable-root-server" "--prefix=/usr --localstatedir=/var --sysconfdir=/etc --with-ssl=/usr --with-user=_nsd --with-chroot=/var/nsd --with-configdir=/var/nsd/etc --with-pidfile= --with-zonesdir=/var/nsd/zones --with-dbfile= --with-zonelistfile=/var/nsd/db/zone.list --with-xfrdir=/var/nsd/run/xfr --with-xfrdfile=/var/nsd/run/xfrd.state --with-libevent=/usr --enable-ratelimit --enable-root-server"
9#define STDC_HEADERS1 1
10#define HAVE_SYS_TYPES_H1 1
11#define HAVE_SYS_STAT_H1 1
12#define HAVE_STDLIB_H1 1
13#define HAVE_STRING_H1 1
14#define HAVE_MEMORY_H1 1
15#define HAVE_STRINGS_H1 1
16#define HAVE_INTTYPES_H1 1
17#define HAVE_STDINT_H1 1
18#define HAVE_UNISTD_H1 1
19#define __EXTENSIONS__1 1
20#define _ALL_SOURCE1 1
21#define _GNU_SOURCE1 1
22#define _POSIX_PTHREAD_SEMANTICS1 1
23#define _TANDEM_SOURCE1 1
24#define CONFIGDIR"/var/nsd/etc" "/var/nsd/etc"
25#define CONFIGFILE"/var/nsd/etc/nsd.conf" "/var/nsd/etc/nsd.conf"
26#define PIDFILE"" ""
27#define DBFILE"" ""
28#define ZONESDIR"/var/nsd/zones" "/var/nsd/zones"
29#define XFRDFILE"/var/nsd/run/xfrd.state" "/var/nsd/run/xfrd.state"
30#define ZONELISTFILE"/var/nsd/db/zone.list" "/var/nsd/db/zone.list"
31#define XFRDIR"/var/nsd/run/xfr" "/var/nsd/run/xfr"
32#define NSD_START_PATH"/usr/sbin/nsd" "/usr/sbin/nsd"
33#define CHROOTDIR"/var/nsd" "/var/nsd"
34#define USER"_nsd" "_nsd"
35#define YYTEXT_POINTER1 1
36/* end confdefs.h. */
37
38int
39main ()
40{
41
42#ifndef __cplusplus
43 /* Ultrix mips cc rejects this sort of thing. */
44 typedef int charset[2];
45 const charset cs = { 0, 0 };
46 /* SunOS 4.1.1 cc rejects this. */
47 char const *const *pcpcc;
48 char **ppc;
49 /* NEC SVR4.0.2 mips cc rejects this. */
50 struct point {int x, y;};
51 static struct point const zero = {0,0};
52 /* AIX XL C 1.02.0.0 rejects this.
53 It does not let you subtract one const X* pointer from another in
54 an arm of an if-expression whose if-part is not a constant
55 expression */
56 const char *g = "string";
57 pcpcc = &g + (g ? g-g : 0);
58 /* HPUX 7.0 cc rejects these. */
59 ++pcpcc;
60 ppc = (char**) pcpcc;
61 pcpcc = (char const *const *) ppc;
Value stored to 'pcpcc' is never read
62 { /* SCO 3.2v4 cc rejects this sort of thing. */
63 char tx;
64 char *t = &tx;
65 char const *s = 0 ? (char *) 0 : (char const *) 0;
66
67 *t++ = 0;
68 if (s) return 0;
69 }
70 { /* Someone thinks the Sun supposedly-ANSI compiler will reject this. */
71 int x[] = {25, 17};
72 const int *foo = &x[0];
73 ++foo;
74 }
75 { /* Sun SC1.0 ANSI compiler rejects this -- but not the above. */
76 typedef const int *iptr;
77 iptr p = 0;
78 ++p;
79 }
80 { /* AIX XL C 1.02.0.0 rejects this sort of thing, saying
81 "k.c", line 2.27: 1506-025 (S) Operand must be a modifiable lvalue. */
82 struct s { int j; const int *ap[3]; } bx;
83 struct s *b = &bx; b->j = 5;
84 }
85 { /* ULTRIX-32 V3.1 (Rev 9) vcc rejects this */
86 const int foo = 10;
87 if (!foo) return 0;
88 }
89 return !cs[0] && !zero.x;
90#endif
91
92 ;
93 return 0;
94}