Bug Summary
| File: | src/usr.sbin/unbound/obj/conftest.c |
| Warning: | line 20, column 9
Value stored to 'a' 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/unbound/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/unbound/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 | |
| 2 | #include "confdefs.h" |
| 3 | #include <stdlib.h> |
| 4 | #include <ctype.h> |
| 5 | #include <sys/time.h> |
| 6 | #ifdef HAVE_TIME_H |
| 7 | #include <time.h> |
| 8 | #endif |
| 9 | #include <unistd.h> |
| 10 | #ifdef HAVE_GETOPT_H |
| 11 | #include <getopt.h> |
| 12 | #endif |
| 13 | |
| 14 | int test() { |
| 15 | int a; |
| 16 | char **opts = NULL; |
| 17 | struct timeval tv; |
| 18 | tv.tv_usec = 10; |
| 19 | srandom(32); |
| 20 | a = getopt(2, opts, "a"); |
| Value stored to 'a' is never read |
| 21 | a = isascii(32); |
| 22 | if(tv.tv_usec) |
| 23 | a = 0; |
| 24 | return a; |
| 25 | } |
| 26 | |
| 27 | void f(){} |