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@@ -158,9 +158,11 @@ tor_gzip_compress(char **out, size_t *out_len,
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method_bits(method, HIGH_COMPRESSION),
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get_memlevel(HIGH_COMPRESSION),
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Z_DEFAULT_STRATEGY) != Z_OK) {
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+ //LCOV_EXCL_START -- we can only provoke failure by giving junk arguments.
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log_warn(LD_GENERAL, "Error from deflateInit2: %s",
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stream->msg?stream->msg:"<no message>");
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goto err;
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+ //LCOV_EXCL_STOP
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}
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/* Guess 50% compression. */
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@@ -214,8 +216,11 @@ tor_gzip_compress(char **out, size_t *out_len,
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tor_assert(stream->total_out >= 0);
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#endif
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if (deflateEnd(stream)!=Z_OK) {
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+ // LCOV_EXCL_START -- unreachable if we handled the zlib structure right
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+ tor_assert_nonfatal_unreached();
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log_warn(LD_BUG, "Error freeing gzip structures");
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goto err;
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+ // LCOV_EXCL_STOP
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}
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tor_free(stream);
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@@ -274,9 +279,11 @@ tor_gzip_uncompress(char **out, size_t *out_len,
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if (inflateInit2(stream,
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method_bits(method, HIGH_COMPRESSION)) != Z_OK) {
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+ // LCOV_EXCL_START -- can only hit this if we give bad inputs.
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log_warn(LD_GENERAL, "Error from inflateInit2: %s",
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stream->msg?stream->msg:"<no message>");
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goto err;
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+ // LCOV_EXCL_STOP
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}
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out_size = in_len * 2; /* guess 50% compression. */
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@@ -434,10 +441,10 @@ tor_zlib_new(int compress, compress_method_t method,
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if (deflateInit2(&out->stream, Z_BEST_COMPRESSION, Z_DEFLATED,
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bits, memlevel,
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Z_DEFAULT_STRATEGY) != Z_OK)
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- goto err;
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+ goto err; // LCOV_EXCL_LINE
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} else {
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if (inflateInit2(&out->stream, bits) != Z_OK)
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- goto err;
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+ goto err; // LCOV_EXCL_LINE
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}
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out->allocation = tor_zlib_state_size_precalc(!compress, bits, memlevel);
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