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  1. C Driver
  2. CDRIVER-1348

scan-build warnings (libbson)

    • Type: Icon: Bug Bug
    • Resolution: Done
    • Priority: Icon: Major - P3 Major - P3
    • 1.4.0
    • Affects Version/s: None
    • Component/s: None
    • None

      scan-build warnings

       [2016/06/29 12:07:59.331] + scan-build-3.8 -o scan --status-bugs make test TEST_ARGS=--no-fork -F test-results.json
       [2016/06/29 12:07:59.403] scan-build: Using '/usr/lib/llvm-3.8/bin/clang' for static analysis
       [2016/06/29 12:07:59.427]   CC       tests/test_libbson-TestSuite.o
       [2016/06/29 12:08:02.095]   CC       tests/test_libbson-test-libbson.o
       [2016/06/29 12:08:02.272]   CC       tests/test_libbson-test-atomic.o
       [2016/06/29 12:08:02.498]   CC       tests/test_libbson-test-bson.o
       [2016/06/29 12:08:03.123]   CC       tests/test_libbson-test-endian.o
       [2016/06/29 12:08:03.357]   CC       tests/test_libbson-test-clock.o
       [2016/06/29 12:08:03.583]   CC       tests/test_libbson-test-decimal128.o
       [2016/06/29 12:08:03.891]   CC       tests/test_libbson-test-error.o
       [2016/06/29 12:08:04.118]   CC       tests/test_libbson-test-iso8601.o
       [2016/06/29 12:08:04.464]   CC       tests/test_libbson-test-iter.o
       [2016/06/29 12:08:04.809]   CC       tests/test_libbson-test-json.o
       [2016/06/29 12:08:05.703] tests/test-json.c:217:4: warning: Value stored to 'r' is never read
       [2016/06/29 12:08:05.703]    r = !!strstr(str, "...");
       [2016/06/29 12:08:05.703]    ^   ~~~~~~~~~~~~~~~~~~~~
       [2016/06/29 12:08:05.703] 1 warning generated.
       [2016/06/29 12:08:05.712]   CC       tests/test_libbson-test-oid.o
       [2016/06/29 12:08:05.990]   CC       tests/test_libbson-test-reader.o
       [2016/06/29 12:08:06.265]   CC       tests/test_libbson-test-string.o
       [2016/06/29 12:08:06.528]   CC       tests/test_libbson-test-utf8.o
       [2016/06/29 12:08:06.798]   CC       tests/test_libbson-test-value.o
       [2016/06/29 12:08:07.046]   CC       tests/test_libbson-test-version.o
       [2016/06/29 12:08:07.272]   CC       tests/test_libbson-test-writer.o
       [2016/06/29 12:08:07.522]   CC       tests/test_libbson-test-bcon-basic.o
       [2016/06/29 12:08:08.469]   CC       tests/test_libbson-test-bcon-extract.o
       [2016/06/29 12:08:08.884]   CC       tests/test_libbson-test-type.o
       [2016/06/29 12:08:11.867] tests/test-type.c:137:14: warning: Value stored to 'bson_input' during its initialization is never read
       [2016/06/29 12:08:11.868]       bson_t bson_input = BSON_INITIALIZER;
       [2016/06/29 12:08:11.868]              ^~~~~~~~~~   ~~~~~~~~~~~~~~~~
       [2016/06/29 12:08:11.868] tests/test-type.c:187:10: warning: Function call argument is an uninitialized value
       [2016/06/29 12:08:11.868]          valid (bson_str,
       [2016/06/29 12:08:11.868]          ^~~~~~~~~~~~~~~~
       [2016/06/29 12:08:11.868] 2 warnings generated.
       [2016/06/29 12:08:11.877]   CC       tests/test_libbson-json-test.o
       [2016/06/29 12:08:12.684]   CC       src/bson/libbson_la-bcon.lo
       [2016/06/29 12:08:15.786]   CC       src/bson/libbson_la-bson.lo
       [2016/06/29 12:08:18.470] src/bson/bson.c:1933:4: warning: Value stored to 'impl_i' is never read
       [2016/06/29 12:08:18.470]    impl_i = (bson_impl_inline_t *)b;
       [2016/06/29 12:08:18.470]    ^        ~~~~~~~~~~~~~~~~~~~~~~~
       [2016/06/29 12:08:18.470] 1 warning generated.
       [2016/06/29 12:08:18.484]   CC       src/bson/libbson_la-bson-atomic.lo
       [2016/06/29 12:08:19.310]   CC       src/bson/libbson_la-bson-clock.lo
       [2016/06/29 12:08:20.136]   CC       src/bson/libbson_la-bson-context.lo
       [2016/06/29 12:08:21.012]   CC       src/bson/libbson_la-bson-decimal128.lo
       [2016/06/29 12:08:22.452]   CC       src/bson/libbson_la-bson-error.lo
       [2016/06/29 12:08:23.290]   CC       src/bson/libbson_la-bson-iter.lo
       [2016/06/29 12:08:25.703]   CC       src/bson/libbson_la-bson-iso8601.lo
       [2016/06/29 12:08:26.593]   CC       src/bson/libbson_la-bson-json.lo
       [2016/06/29 12:08:29.260]   CC       src/bson/libbson_la-bson-keys.lo
       [2016/06/29 12:08:30.103]   CC       src/bson/libbson_la-bson-md5.lo
       [2016/06/29 12:08:31.628]   CC       src/bson/libbson_la-bson-memory.lo
       [2016/06/29 12:08:32.480]   CC       src/bson/libbson_la-bson-oid.lo
       [2016/06/29 12:08:34.036]   CC       src/bson/libbson_la-bson-reader.lo
       [2016/06/29 12:08:35.127]   CC       src/bson/libbson_la-bson-string.lo
       [2016/06/29 12:08:36.874]   CC       src/bson/libbson_la-bson-timegm.lo
       [2016/06/29 12:08:39.894]   CC       src/bson/libbson_la-bson-utf8.lo
       [2016/06/29 12:08:41.971]   CC       src/bson/libbson_la-bson-value.lo
       [2016/06/29 12:08:42.830]   CC       src/bson/libbson_la-bson-version-functions.lo
       [2016/06/29 12:08:43.671]   CC       src/bson/libbson_la-bson-writer.lo
       [2016/06/29 12:08:44.544]   CCLD     libbson.la
       [2016/06/29 12:08:44.748] ar: `u' modifier ignored since `D' is the default (see `U')
       [2016/06/29 12:08:44.801]   CC       src/yajl/libyajl_la-yajl_version.lo
       [2016/06/29 12:08:45.543]   CC       src/yajl/libyajl_la-yajl.lo
       [2016/06/29 12:08:46.348]   CC       src/yajl/libyajl_la-yajl_encode.lo
       [2016/06/29 12:08:49.577]   CC       src/yajl/libyajl_la-yajl_lex.lo
       [2016/06/29 12:08:53.886] src/yajl/yajl_lex.c:630:21: warning: Value stored to 'tok' is never read
       [2016/06/29 12:08:53.886]                     tok = yajl_tok_error;
       [2016/06/29 12:08:53.886]                     ^     ~~~~~~~~~~~~~~
       [2016/06/29 12:08:53.886] 1 warning generated.
       [2016/06/29 12:08:53.901]   CC       src/yajl/libyajl_la-yajl_parser.lo
       [2016/06/29 12:08:57.061]   CC       src/yajl/libyajl_la-yajl_buf.lo
       [2016/06/29 12:08:57.836]   CC       src/yajl/libyajl_la-yajl_tree.lo
       [2016/06/29 12:08:58.852] src/yajl/yajl_tree.c:267:23: warning: Access to field 'type' results in a dereference of a null pointer (loaded from field 'value')
       [2016/06/29 12:08:58.852]                       ctx->stack->value->type);
       [2016/06/29 12:08:58.852]                       ^~~~~~~~~~~~~~~~~~~~~~~
       [2016/06/29 12:08:58.852] src/yajl/yajl_tree.c:55:58: note: expanded from macro 'RETURN_ERROR'
       [2016/06/29 12:08:58.852]             snprintf ((ctx)->errbuf, (ctx)->errbuf_size, __VA_ARGS__);  \
       [2016/06/29 12:08:58.852]                                                          ^~~~~~~~~~~
       [2016/06/29 12:08:58.852] src/yajl/yajl_tree.c:435:5: warning: Value stored to 'status' is never read
       [2016/06/29 12:08:58.852]     status = yajl_parse(handle,
       [2016/06/29 12:08:58.852]     ^        ~~~~~~~~~~~~~~~~~~
       [2016/06/29 12:08:58.852] 2 warnings generated.
      

      All of these look legit.

      See https://evergreen.mongodb.com/task/libbson_releng_debug_compile_scan_build_0d22cadc6e97192fb3a7bd46163095e3ebd1ec58_16_06_29_18_50_02

            Assignee:
            jesse@mongodb.com A. Jesse Jiryu Davis
            Reporter:
            bjori Hannes Magnusson
            Votes:
            0 Vote for this issue
            Watchers:
            2 Start watching this issue

              Created:
              Updated:
              Resolved: