Uninitialized bytes in __interceptor_strlen at offset 0 inside [0x7010000008a0, 11)
==30845==WARNING: MemorySanitizer: use-of-uninitialized-value
    #0 0x7f3bb6714097  (/usr/lib/x86_64-linux-gnu/libfontconfig.so.1+0xb097)
    #1 0x7f3bb6716baa in FcConfigFilename (/usr/lib/x86_64-linux-gnu/libfontconfig.so.1+0xdbaa)
    #2 0x7f3bb672f607  (/usr/lib/x86_64-linux-gnu/libfontconfig.so.1+0x26607)
    #3 0x7f3bb6721be3  (/usr/lib/x86_64-linux-gnu/libfontconfig.so.1+0x18be3)
    #4 0x7f3bb6721e45  (/usr/lib/x86_64-linux-gnu/libfontconfig.so.1+0x18e45)
    #5 0x7f3bb6714736  (/usr/lib/x86_64-linux-gnu/libfontconfig.so.1+0xb736)
    #6 0x7f3bb6721f05 in FcInitBringUptoDate (/usr/lib/x86_64-linux-gnu/libfontconfig.so.1+0x18f05)
    #7 0x7f3bb6724be9 in FcFontList (/usr/lib/x86_64-linux-gnu/libfontconfig.so.1+0x1bbe9)
    #8 0x292ed45 in Upp::GetAllFacesSys() /home/ssg/dvlp/cpp/upp/git/uppsrc/Draw/FontFc.cpp:236:18
    #9 0x292e354 in Upp::Font::FaceList() /home/ssg/dvlp/cpp/upp/git/uppsrc/Draw/Font.cpp:34:10
    #10 0x292fc97 in Upp::sInitFonts() /home/ssg/dvlp/cpp/upp/git/uppsrc/Draw/Font.cpp:42:2
    #11 0x292fd68 in Upp::s__sF0_46_fn() /home/ssg/dvlp/cpp/upp/git/uppsrc/Draw/Font.cpp:47:2
    #12 0x12bb799 in Upp::Callinit::Callinit(void (*)(), char const*, int) /home/ssg/dvlp/cpp/upp/git/uppsrc/Core/Defs.h:176:83
    #13 0x469944 in __cxx_global_var_init.4 /home/ssg/dvlp/cpp/upp/git/uppsrc/Draw/Font.cpp:46:1
    #14 0x469d5c in _GLOBAL__sub_I__blitz.cpp /home/ssg/dvlp/cpp/upp/git/out/MyApps/Draw/CLANGcpp17msan.Debug.Debug_Full.Gui.Shared.Usemalloc/$blitz.cpp
    #15 0x3dfd874 in __libc_csu_init (/home/ssg/dvlp/cpp/upp/git/out/MyApps/CLANGcpp17msan.Debug.Debug_Full.Gui.Shared.Usemalloc/OpenCorpora+0x3dfd874)
    #16 0x7f3bb47a0029 in __libc_start_main /build/glibc-B9XfQf/glibc-2.28/csu/../csu/libc-start.c:264:6
    #17 0x471839 in _start (/home/ssg/dvlp/cpp/upp/git/out/MyApps/CLANGcpp17msan.Debug.Debug_Full.Gui.Shared.Usemalloc/OpenCorpora+0x471839)

  Uninitialized value was created by a heap allocation
    #0 0x47adfc in __interceptor_malloc (/home/ssg/dvlp/cpp/upp/git/out/MyApps/CLANGcpp17msan.Debug.Debug_Full.Gui.Shared.Usemalloc/OpenCorpora+0x47adfc)
    #1 0x7f3bb6716b67 in FcConfigFilename (/usr/lib/x86_64-linux-gnu/libfontconfig.so.1+0xdb67)
    #2 0x292e354 in Upp::Font::FaceList() /home/ssg/dvlp/cpp/upp/git/uppsrc/Draw/Font.cpp:34:10
    #3 0x292fc97 in Upp::sInitFonts() /home/ssg/dvlp/cpp/upp/git/uppsrc/Draw/Font.cpp:42:2
    #4 0x292fd68 in Upp::s__sF0_46_fn() /home/ssg/dvlp/cpp/upp/git/uppsrc/Draw/Font.cpp:47:2
    #5 0x12bb799 in Upp::Callinit::Callinit(void (*)(), char const*, int) /home/ssg/dvlp/cpp/upp/git/uppsrc/Core/Defs.h:176:83
    #6 0x469944 in __cxx_global_var_init.4 /home/ssg/dvlp/cpp/upp/git/uppsrc/Draw/Font.cpp:46:1
    #7 0x469d5c in _GLOBAL__sub_I__blitz.cpp /home/ssg/dvlp/cpp/upp/git/out/MyApps/Draw/CLANGcpp17msan.Debug.Debug_Full.Gui.Shared.Usemalloc/$blitz.cpp
    #8 0x3dfd874 in __libc_csu_init (/home/ssg/dvlp/cpp/upp/git/out/MyApps/CLANGcpp17msan.Debug.Debug_Full.Gui.Shared.Usemalloc/OpenCorpora+0x3dfd874)

SUMMARY: MemorySanitizer: use-of-uninitialized-value (/usr/lib/x86_64-linux-gnu/libfontconfig.so.1+0xb097) 
Exiting