commit 7b54d7ebbd963a0a40b6ff5109ea0e3eedde534d Author: Nick Mathewson nickm@torproject.org Date: Wed Jun 15 17:25:53 2016 -0400
Mark src/common tor_assert(0)/tor_fragile_assert() unreached for coverage
I audited this to make sure I was only marking ones that really should be unreachable. --- src/common/address.c | 11 +++++++++-- src/common/aes.c | 2 +- src/common/compat.c | 5 ++++- src/common/log.c | 4 ++-- src/common/util.c | 2 ++ src/common/util_format.c | 2 +- 6 files changed, 19 insertions(+), 7 deletions(-)
diff --git a/src/common/address.c b/src/common/address.c index 127e6a9..5cd7a8d 100644 --- a/src/common/address.c +++ b/src/common/address.c @@ -335,7 +335,7 @@ tor_addr_lookup(const char *name, uint16_t family, tor_addr_t *addr) } else if (ent->h_addrtype == AF_INET6) { tor_addr_from_in6(addr, (struct in6_addr*) ent->h_addr); } else { - tor_assert(0); /* gethostbyname() returned a bizarre addrtype */ + tor_assert(0); // LCOV_EXCL_LINE: gethostbyname() returned bizarre type } return 0; } @@ -906,8 +906,10 @@ tor_addr_is_loopback(const tor_addr_t *addr) case AF_UNSPEC: return 0; default: + /* LCOV_EXCL_START */ tor_fragile_assert(); return 0; + /* LCOV_EXCL_STOP */ } }
@@ -1028,7 +1030,7 @@ tor_addr_copy_tight(tor_addr_t *dest, const tor_addr_t *src) case AF_UNSPEC: break; default: - tor_fragile_assert(); + tor_fragile_assert(); // LCOV_EXCL_LINE } }
@@ -1097,6 +1099,7 @@ tor_addr_compare_masked(const tor_addr_t *addr1, const tor_addr_t *addr2, case AF_INET6: { if (mbits > 128) mbits = 128; + const uint8_t *a1 = tor_addr_to_in6_addr8(addr1); const uint8_t *a2 = tor_addr_to_in6_addr8(addr2); const int bytes = mbits >> 3; @@ -1112,8 +1115,10 @@ tor_addr_compare_masked(const tor_addr_t *addr1, const tor_addr_t *addr2, } } default: + /* LCOV_EXCL_START */ tor_fragile_assert(); return 0; + /* LCOV_EXCL_STOP */ } } else if (how == CMP_EXACT) { /* Unequal families and an exact comparison? Stop now! */ @@ -1166,8 +1171,10 @@ tor_addr_hash(const tor_addr_t *addr) case AF_INET6: return siphash24g(&addr->addr.in6_addr.s6_addr, 16); default: + /* LCOV_EXCL_START */ tor_fragile_assert(); return 0; + /* LCOV_EXCL_END */ } }
diff --git a/src/common/aes.c b/src/common/aes.c index e9f78f4..db250c8 100644 --- a/src/common/aes.c +++ b/src/common/aes.c @@ -283,7 +283,7 @@ aes_set_key(aes_cnt_cipher_t *cipher, const char *key, int key_bits) case 128: c = EVP_aes_128_ecb(); break; case 192: c = EVP_aes_192_ecb(); break; case 256: c = EVP_aes_256_ecb(); break; - default: tor_assert(0); + default: tor_assert(0); // LCOV_EXCL_LINE } EVP_EncryptInit(&cipher->key.evp, c, (const unsigned char*)key, NULL); cipher->using_evp = 1; diff --git a/src/common/compat.c b/src/common/compat.c index 9d49b8f..023325b 100644 --- a/src/common/compat.c +++ b/src/common/compat.c @@ -526,8 +526,10 @@ tor_asprintf(char **strp, const char *fmt, ...) r = tor_vasprintf(strp, fmt, args); va_end(args); if (!*strp || r < 0) { + /* LCOV_EXCL_START */ log_err(LD_BUG, "Internal error in asprintf"); tor_assert(0); + /* LCOV_EXCL_STOP */ } return r; } @@ -2976,11 +2978,12 @@ correct_tm(int islocal, const time_t *timep, struct tm *resultbuf,
/* If we get here, then gmtime/localtime failed without getting an extreme * value for *timep */ - + /* LCOV_EXCL_START */ tor_fragile_assert(); r = resultbuf; memset(resultbuf, 0, sizeof(struct tm)); outcome="can't recover"; + /* LCOV_EXCL_STOP */ done: log_warn(LD_BUG, "%s("I64_FORMAT") failed with error %s: %s", islocal?"localtime":"gmtime", diff --git a/src/common/log.c b/src/common/log.c index e948ccf..51309aa 100644 --- a/src/common/log.c +++ b/src/common/log.c @@ -75,7 +75,7 @@ sev_to_string(int severity) case LOG_ERR: return "err"; default: /* Call assert, not tor_assert, since tor_assert * calls log on failure. */ - assert(0); return "UNKNOWN"; + assert(0); return "UNKNOWN"; // LCOV_EXCL_LINE } }
@@ -95,7 +95,7 @@ should_log_function_name(log_domain_mask_t domain, int severity) return (domain & (LD_BUG|LD_NOFUNCNAME)) == LD_BUG; default: /* Call assert, not tor_assert, since tor_assert calls log on failure. */ - assert(0); return 0; + assert(0); return 0; // LCOV_EXCL_LINE } }
diff --git a/src/common/util.c b/src/common/util.c index 1546fd1..b773aa7 100644 --- a/src/common/util.c +++ b/src/common/util.c @@ -2790,9 +2790,11 @@ unescape_string(const char *s, char **result, size_t *size_out) if (size_out) *size_out = out - *result; return cp+1; case '\0': + /* LCOV_EXCL_START */ tor_fragile_assert(); tor_free(*result); return NULL; + /* LCOV_EXCL_STOP */ case '\': switch (cp[1]) { diff --git a/src/common/util_format.c b/src/common/util_format.c index 8aae9e8..2dea187 100644 --- a/src/common/util_format.c +++ b/src/common/util_format.c @@ -249,7 +249,7 @@ base64_encode(char *dest, size_t destlen, const char *src, size_t srclen, break; default: /* Something went catastrophically wrong. */ - tor_fragile_assert(); + tor_fragile_assert(); // LCOV_EXCL_LINE return -1; }