shithub: libvpx

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test/vp[89]_boolcoder_test: quiet msan warnings

the bitreaders may fill beyond what was written to the buffer as an
optimization. the data isn't used meaningfully, but it may trigger a
msan warning.

BUG=b/140939146

Change-Id: Id03cd203b8ee7ecaf6fdfe3f3c9f2ccfec527129

--- a/test/vp8_boolcoder_test.cc

+++ b/test/vp8_boolcoder_test.cc

@@ -93,6 +93,9 @@

         }

         vp8_stop_encode(&bw);

+        // vp8dx_bool_decoder_fill() may read into uninitialized data that

+        // isn't used meaningfully, but may trigger an MSan warning.

+        memset(bw_buffer + bw.pos, 0, sizeof(VP8_BD_VALUE) - 1);

         BOOL_DECODER br;

         encrypt_buffer(bw_buffer, kBufferSize);

--- a/test/vp9_boolcoder_test.cc

+++ b/test/vp9_boolcoder_test.cc

@@ -66,6 +66,9 @@

         }

         vpx_stop_encode(&bw);

+        // vpx_reader_fill() may read into uninitialized data that

+        // isn't used meaningfully, but may trigger an MSan warning.

+        memset(bw_buffer + bw.pos, 0, sizeof(BD_VALUE) - 1);

         // First bit should be zero

         GTEST_ASSERT_EQ(bw_buffer[0] & 0x80, 0);