MSan has detected an uninitialized read in QCMS that is hit by the SimpleColorSpace.BT709toSRGBICC unit test:

[==========] Running 1 test from 1 test case.
[----------] Global test environment set-up.
[----------] 1 test from SimpleColorSpace
[ RUN      ] SimpleColorSpace.BT709toSRGBICC
==40047==WARNING: MemorySanitizer: use-of-uninitialized-value
    #0 0x20a8f6c in build_input_gamma_table ./out/MSan/../../third_party/qcms/src/transform_util.c:276:7
    #1 0x208ccc4 in qcms_modular_transform_create_input ./out/MSan/../../third_party/qcms/src/chain.c:736:35
    #2 0x20915d6 in qcms_modular_transform_create ./out/MSan/../../third_party/qcms/src/chain.c:923:10
    #3 0x209108a in qcms_chain_transform ./out/MSan/../../third_party/qcms/src/chain.c:991:50
    #4 0x7076ac in TestBody ./out/MSan/../../ui/gfx/color_transform_unittest.cc:349:6
    #5 0x1bc00e6 in HandleExceptionsInMethodIfSupported<testing::Test, void> ./out/MSan/../../testing/gtest/src/gtest.cc:2458:12
    #6 0x1bc00e6 in Run ./out/MSan/../../testing/gtest/src/gtest.cc:2474:0
    #7 0x1bc3047 in Run ./out/MSan/../../testing/gtest/src/gtest.cc:2656:11
    #8 0x1bc485b in Run ./out/MSan/../../testing/gtest/src/gtest.cc:2774:28
    #9 0x1be1ec1 in RunAllTests ./out/MSan/../../testing/gtest/src/gtest.cc:4647:43
    #10 0x1be0eba in HandleExceptionsInMethodIfSupported<testing::internal::UnitTestImpl, bool> ./out/MSan/../../testing/gtest/src/gtest.cc:2458:12
    #11 0x1be0eba in Run ./out/MSan/../../testing/gtest/src/gtest.cc:4255:0
    #12 0xfc4ef0 in RUN_ALL_TESTS ./out/MSan/../../testing/gtest/include/gtest/gtest.h:2237:46
    #13 0xfc4ef0 in Run ./out/MSan/../../base/test/test_suite.cc:245:0
    #14 0xfc98ab in Run ./out/MSan/../../base/callback.h:389:12
    #15 0xfc98ab in LaunchUnitTestsInternal ./out/MSan/../../base/test/launcher/unit_test_launcher.cc:206:0
    #16 0xfc9107 in LaunchUnitTests ./out/MSan/../../base/test/launcher/unit_test_launcher.cc:445:10
    #17 0x5edf86 in main ./out/MSan/../../ui/gfx/test/run_all_unittests.cc:105:10
    #18 0x7ff037dc6f44 in __libc_start_main /build/eglibc-oGUzwX/eglibc-2.19/csu/libc-start.c:287:0
    #19 0x48ec04 in _start ??:?

  Uninitialized value was created by a heap allocation
    #0 0x4b4202 in __interceptor_malloc ??:?
    #1 0x209612e in curve_from_gamma ./out/MSan/../../third_party/qcms/src/iccread.c:1162:10
    #2 0x209612e in qcms_profile_create_rgb_with_gamma ./out/MSan/../../third_party/qcms/src/iccread.c:1190:0
    #3 0xd5e9db in GetXYZD50Profile ./out/MSan/../../ui/gfx/color_transform.cc:624:10
    #4 0xd5e9db in NewColorTransform ./out/MSan/../../ui/gfx/color_transform.cc:650:0
    #5 0x707609 in TestBody ./out/MSan/../../ui/gfx/color_transform_unittest.cc:345:37
    #6 0x1bc00e6 in HandleExceptionsInMethodIfSupported<testing::Test, void> ./out/MSan/../../testing/gtest/src/gtest.cc:2458:12
    #7 0x1bc00e6 in Run ./out/MSan/../../testing/gtest/src/gtest.cc:2474:0
    #8 0x1bc3047 in Run ./out/MSan/../../testing/gtest/src/gtest.cc:2656:11
    #9 0x1bc485b in Run ./out/MSan/../../testing/gtest/src/gtest.cc:2774:28
    #10 0x1be1ec1 in RunAllTests ./out/MSan/../../testing/gtest/src/gtest.cc:4647:43
    #11 0x1be0eba in HandleExceptionsInMethodIfSupported<testing::internal::UnitTestImpl, bool> ./out/MSan/../../testing/gtest/src/gtest.cc:2458:12
    #12 0x1be0eba in Run ./out/MSan/../../testing/gtest/src/gtest.cc:4255:0
    #13 0xfc4ef0 in RUN_ALL_TESTS ./out/MSan/../../testing/gtest/include/gtest/gtest.h:2237:46
    #14 0xfc4ef0 in Run ./out/MSan/../../base/test/test_suite.cc:245:0
    #15 0xfc98ab in Run ./out/MSan/../../base/callback.h:389:12
    #16 0xfc98ab in LaunchUnitTestsInternal ./out/MSan/../../base/test/launcher/unit_test_launcher.cc:206:0
    #17 0xfc9107 in LaunchUnitTests ./out/MSan/../../base/test/launcher/unit_test_launcher.cc:445:10
    #18 0x5edf86 in main ./out/MSan/../../ui/gfx/test/run_all_unittests.cc:105:10
    #19 0x7ff037dc6f44 in __libc_start_main /build/eglibc-oGUzwX/eglibc-2.19/csu/libc-start.c:287:0

SUMMARY: MemorySanitizer: use-of-uninitialized-value (/src/chromium/src/out/MSan/gfx_unittests+0x20a8f6c)
Exiting
[1/1] SimpleColorSpace.BT709toSRGBICC (CRASHED)
1 test crashed:
    SimpleColorSpace.BT709toSRGBICC (../../ui/gfx/color_transform_unittest.cc:339)
Tests took 0 seconds.