Add coverage markers in Zstd + LZMA compression backends.

See: https://bugs.torproject.org/22286

1 files changed, 16 insertions, 0 deletions

diff --git a/src/common/compress_zstd.c b/src/common/compress_zstd.c
index 99d05c37bd..f54c4e1b31 100644
--- a/src/common/compress_zstd.c
+++ b/src/common/compress_zstd.c
@@ -194,31 +194,39 @@ tor_zstd_compress_new(int compress,
     result->u.compress_stream = ZSTD_createCStream();
 
     if (result->u.compress_stream == NULL) {
+      // LCOV_EXCL_START
       log_warn(LD_GENERAL, "Error while creating Zstandard stream");
       goto err;
+      // LCOV_EXCL_STOP
     }
 
     retval = ZSTD_initCStream(result->u.compress_stream, preset);
 
     if (ZSTD_isError(retval)) {
+      // LCOV_EXCL_START
       log_warn(LD_GENERAL, "Zstandard stream initialization error: %s",
                ZSTD_getErrorName(retval));
       goto err;
+      // LCOV_EXCL_STOP
     }
   } else {
     result->u.decompress_stream = ZSTD_createDStream();
 
     if (result->u.decompress_stream == NULL) {
+      // LCOV_EXCL_START
       log_warn(LD_GENERAL, "Error while creating Zstandard stream");
       goto err;
+      // LCOV_EXCL_STOP
     }
 
     retval = ZSTD_initDStream(result->u.decompress_stream);
 
     if (ZSTD_isError(retval)) {
+      // LCOV_EXCL_START
       log_warn(LD_GENERAL, "Zstandard stream initialization error: %s",
                ZSTD_getErrorName(retval));
       goto err;
+      // LCOV_EXCL_STOP
     }
   }
 
@@ -226,6 +234,7 @@ tor_zstd_compress_new(int compress,
   return result;
 
  err:
+  // LCOV_EXCL_START
   if (compress) {
     ZSTD_freeCStream(result->u.compress_stream);
   } else {
@@ -234,6 +243,7 @@ tor_zstd_compress_new(int compress,
 
   tor_free(result);
   return NULL;
+  // LCOV_EXCL_STOP
 #else // HAVE_ZSTD.
   (void)compress;
   (void)method;
@@ -294,10 +304,12 @@ tor_zstd_compress_process(tor_zstd_compress_state_t *state,
   }
 
   if (ZSTD_isError(retval)) {
+    // LCOV_EXCL_START
     log_warn(LD_GENERAL, "Zstandard %s didn't finish: %s.",
              state->compress ? "compression" : "decompression",
              ZSTD_getErrorName(retval));
     return TOR_COMPRESS_ERROR;
+    // LCOV_EXCL_STOP
   }
 
   if (state->compress && !finish) {
@@ -307,9 +319,11 @@ tor_zstd_compress_process(tor_zstd_compress_state_t *state,
     *out_len = output.size - output.pos;
 
     if (ZSTD_isError(retval)) {
+      // LCOV_EXCL_START
       log_warn(LD_GENERAL, "Zstandard compression unable to flush: %s.",
                ZSTD_getErrorName(retval));
       return TOR_COMPRESS_ERROR;
+      // LCOV_EXCL_STOP
     }
 
     if (retval > 0)
@@ -326,10 +340,12 @@ tor_zstd_compress_process(tor_zstd_compress_state_t *state,
     *out_len = output.size - output.pos;
 
     if (ZSTD_isError(retval)) {
+      // LCOV_EXCL_START
       log_warn(LD_GENERAL, "Zstandard compression unable to write "
                "epilogue: %s.",
                ZSTD_getErrorName(retval));
       return TOR_COMPRESS_ERROR;
+      // LCOV_EXCL_STOP
     }
 
     // endStream returns the number of bytes that is needed to write the