Coverage exclusion when relevant

src/libsodium/crypto_aead/chacha20poly1305/sodium/aead_chacha20poly1305.c

@@ -37,6 +37,7 @@ crypto_aead_chacha20poly1305_encrypt(unsigned char *c,
     unsigned char                     slen[8U];
 
     (void) nsec;
+/* LCOV_EXCL_START */
 #ifdef ULONG_LONG_MAX
     if (mlen > ULONG_LONG_MAX - crypto_aead_chacha20poly1305_ABYTES) {
         if (clen != NULL) {
@@ -45,6 +46,7 @@ crypto_aead_chacha20poly1305_encrypt(unsigned char *c,
         return -1;
     }
 #endif
+/* LCOV_EXCL_STOP */
 
     crypto_stream_chacha20(block0, sizeof block0, npub, k);
     crypto_onetimeauth_poly1305_init(&state, block0);

src/libsodium/crypto_sign/ed25519/ref10/sign.c

@@ -61,6 +61,7 @@ crypto_sign(unsigned char *sm, unsigned long long *smlen,
 {
     unsigned long long siglen;
 
+/* LCOV_EXCL_START */
     if (crypto_sign_detached(sm, &siglen, m, mlen, sk) != 0 ||
         siglen > crypto_sign_ed25519_BYTES) {
         if (smlen != NULL) {
@@ -69,6 +70,8 @@ crypto_sign(unsigned char *sm, unsigned long long *smlen,
         memset(sm, 0, mlen + crypto_sign_ed25519_BYTES);
         return -1;
     }
+/* LCOV_EXCL_STOP */
+
     memmove(sm + siglen, m, mlen);
     if (smlen != NULL) {
         *smlen = mlen + siglen;

src/libsodium/randombytes/salsa20/randombytes_salsa20_random.c

@@ -112,6 +112,7 @@ safe_read(const int fd, void * const buf_, size_t count)
 static int
 randombytes_salsa20_random_random_dev_open(void)
 {
+/* LCOV_EXCL_START */
     struct stat       st;
     static const char *devices[] = {
 # ifndef USE_BLOCKING_RANDOM
@@ -133,6 +134,7 @@ randombytes_salsa20_random_random_dev_open(void)
     } while (*device != NULL);
 
     return -1;
+/* LCOV_EXCL_STOP */
 }
 
 static void
@@ -145,7 +147,7 @@ randombytes_salsa20_random_init(void)
 
     if ((stream.random_data_source_fd =
          randombytes_salsa20_random_random_dev_open()) == -1) {
-        abort();
+        abort(); /* LCOV_EXCL_LINE */
     }
     errno = errno_save;
 }
@@ -183,11 +185,11 @@ randombytes_salsa20_random_stir(void)
 #ifndef _WIN32
     if (safe_read(stream.random_data_source_fd, m0,
                   sizeof m0) != (ssize_t) sizeof m0) {
-        abort();
+        abort(); /* LCOV_EXCL_LINE */
     }
 #else /* _WIN32 */
     if (! RtlGenRandom((PVOID) m0, (ULONG) sizeof m0)) {
-        abort();
+        abort(); /* LCOV_EXCL_LINE */
     }
 #endif
     COMPILER_ASSERT(sizeof stream.key == crypto_auth_hmacsha512256_BYTES);

src/libsodium/randombytes/sysrandom/randombytes_sysrandom.c

@@ -102,6 +102,7 @@ safe_read(const int fd, void * const buf_, size_t count)
 static int
 randombytes_sysrandom_random_dev_open(void)
 {
+/* LCOV_EXCL_START */
     struct stat        st;
     static const char *devices[] = {
 # ifndef USE_BLOCKING_RANDOM
@@ -123,6 +124,7 @@ randombytes_sysrandom_random_dev_open(void)
     } while (*device != NULL);
 
     return -1;
+/* LCOV_EXCL_STOP */
 }
 
 static void
@@ -132,7 +134,7 @@ randombytes_sysrandom_init(void)
 
     if ((stream.random_data_source_fd =
          randombytes_sysrandom_random_dev_open()) == -1) {
-        abort();
+        abort(); /* LCOV_EXCL_LINE */
     }
     errno = errno_save;
 }
@@ -203,14 +205,14 @@ randombytes_sysrandom_buf(void * const buf, const size_t size)
 #endif
 #ifndef _WIN32
     if (safe_read(stream.random_data_source_fd, buf, size) != (ssize_t) size) {
-        abort();
+        abort(); /* LCOV_EXCL_LINE */
     }
 #else
     if (size > 0xffffffff) {
-        abort();
+        abort(); /* LCOV_EXCL_LINE */
     }
     if (! RtlGenRandom((PVOID) buf, (ULONG) size)) {
-        abort();
+        abort(); /* LCOV_EXCL_LINE */
     }
 #endif
 }

src/libsodium/sodium/core.c

@@ -15,7 +15,7 @@ sodium_init(void)
     }
     sodium_runtime_get_cpu_features();
     if (crypto_onetimeauth_pick_best_implementation() == NULL) {
-        return -1;
+        return -1; /* LCOV_EXCL_LINE */
     }
     randombytes_stir();
     _sodium_alloc_init();

src/libsodium/sodium/runtime.c

@@ -88,7 +88,7 @@ _sodium_runtime_intel_cpu_features(CPUFeatures * const cpu_features)
 
     _cpuid(cpu_info, 0x0);
     if ((id = cpu_info[0]) == 0U) {
-        return -1;
+        return -1; /* LCOV_EXCL_LINE */
     }
     _cpuid(cpu_info, 0x00000001);
 #ifndef HAVE_EMMINTRIN_H

src/libsodium/sodium/utils.c

@@ -61,7 +61,7 @@ sodium_memzero(void * const pnt, const size_t len)
     SecureZeroMemory(pnt, len);
 #elif defined(HAVE_MEMSET_S)
     if (memset_s(pnt, (rsize_t) len, 0, (rsize_t) len) != 0) {
-        abort();
+        abort(); /* LCOV_EXCL_LINE */
     }
 #elif defined(HAVE_EXPLICIT_BZERO)
     explicit_bzero(pnt, len);
@@ -215,7 +215,7 @@ _sodium_alloc_init(void)
     page_size = (size_t) si.dwPageSize;
 #endif
     if (page_size < CANARY_SIZE) {
-        abort();
+        abort(); /* LCOV_EXCL_LINE */
     }
     randombytes_buf(canary, sizeof canary);
 
@@ -360,7 +360,7 @@ _sodium_malloc(const size_t size)
         return NULL;
     }
     if (page_size <= sizeof canary || page_size < sizeof unprotected_size) {
-        abort();
+        abort(); /* LCOV_EXCL_LINE */
     }
     size_with_canary = (sizeof canary) + size;
     unprotected_size = _page_round(size_with_canary);