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==94343==ERROR: AddressSanitizer: heap-use-after-free on address 0x606000003030 at pc 0x00000090b62c bp 0x7fffffffd1c0 sp 0x7fffffffd1b8
READ of size 8 at 0x606000003030 thread T0
    #0 0x90b62b in ucl_hash_destroy /usr/home/bapt/dev/pkg/external/libucl/src/ucl_hash.c:277:17
    #1 0x9626f6 in ucl_object_free_internal /usr/home/bapt/dev/pkg/external/libucl/src/ucl_util.c:281:5
    #2 0x967619 in ucl_object_unref /usr/home/bapt/dev/pkg/external/libucl/src/ucl_util.c:3657:4
    #3 0xba8bcc in pkg_shutdown /usr/home/bapt/dev/pkg/libpkg/pkg_config.c:1464:2
    #4 0x8018b4343 in __cxa_finalize /usr/src/lib/libc/stdlib/atexit.c:240:5
    #5 0x8018b48c0 in exit /usr/src/lib/libc/stdlib/exit.c:74:2

0x606000003030 is located 16 bytes inside of 64-byte region [0x606000003020,0x606000003060)
freed by thread T0 here:
    #0 0x481d8d in free /usr/src/contrib/llvm-project/compiler-rt/lib/asan/asan_malloc_linux.cpp:123:3
    #1 0x9629b8 in ucl_object_dtor_free /usr/home/bapt/dev/pkg/external/libucl/src/ucl_util.c:208:4
    #2 0x97cd98 in ucl_object_dtor_unref /usr/home/bapt/dev/pkg/external/libucl/src/ucl_util.c:244:3
    #3 0x96278f in ucl_object_free_internal /usr/home/bapt/dev/pkg/external/libucl/src/ucl_util.c:286:3
    #4 0x986d66 in ucl_object_dtor_unref_single /usr/home/bapt/dev/pkg/external/libucl/src/ucl_util.c:235:4
    #5 0x97cda6 in ucl_object_dtor_unref /usr/home/bapt/dev/pkg/external/libucl/src/ucl_util.c:248:3
    #6 0x90b646 in ucl_hash_destroy /usr/home/bapt/dev/pkg/external/libucl/src/ucl_hash.c:278:6
    #7 0x9626f6 in ucl_object_free_internal /usr/home/bapt/dev/pkg/external/libucl/src/ucl_util.c:281:5
    #8 0x967619 in ucl_object_unref /usr/home/bapt/dev/pkg/external/libucl/src/ucl_util.c:3657:4
    #9 0xba6831 in pkg_ini /usr/home/bapt/dev/pkg/libpkg/pkg_config.c:1184:3
    #10 0x4d4cd9 in main /usr/home/bapt/dev/pkg/src/main.c:765:6
    #11 0x42aedf in _start /usr/src/lib/csu/amd64/crt1_c.c:75:7
    #12 0x8010bf007  (<unknown module>)

previously allocated by thread T0 here:
    #0 0x481efd in malloc /usr/src/contrib/llvm-project/compiler-rt/lib/asan/asan_malloc_linux.cpp:145:3
    #1 0x97bf5b in ucl_object_copy_internal /usr/home/bapt/dev/pkg/external/libucl/src/ucl_util.c:3582:8
    #2 0x97c9ce in ucl_object_copy_internal /usr/home/bapt/dev/pkg/external/libucl/src/ucl_util.c:3630:24
    #3 0x970719 in ucl_object_copy /usr/home/bapt/dev/pkg/external/libucl/src/ucl_util.c:3644:9
    #4 0xba667e in pkg_ini /usr/home/bapt/dev/pkg/libpkg/pkg_config.c:1167:31
    #5 0x4d4cd9 in main /usr/home/bapt/dev/pkg/src/main.c:765:6
    #6 0x42aedf in _start /usr/src/lib/csu/amd64/crt1_c.c:75:7
    #7 0x8010bf007  (<unknown module>)

SUMMARY: AddressSanitizer: heap-use-after-free /usr/home/bapt/dev/pkg/external/libucl/src/ucl_hash.c:277:17 in ucl_hash_destroy
Shadow bytes around the buggy address:
  0x4c0c000005b0: fd fd fd fd fd fd fd fd fa fa fa fa fd fd fd fd
  0x4c0c000005c0: fd fd fd fd fa fa fa fa fd fd fd fd fd fd fd fd
  0x4c0c000005d0: fa fa fa fa fd fd fd fd fd fd fd fd fa fa fa fa
  0x4c0c000005e0: fd fd fd fd fd fd fd fd fa fa fa fa fd fd fd fd
  0x4c0c000005f0: fd fd fd fd fa fa fa fa fd fd fd fd fd fd fd fd
=>0x4c0c00000600: fa fa fa fa fd fd[fd]fd fd fd fd fd fa fa fa fa
  0x4c0c00000610: fd fd fd fd fd fd fd fd fa fa fa fa fd fd fd fd
  0x4c0c00000620: fd fd fd fd fa fa fa fa fd fd fd fd fd fd fd fd
  0x4c0c00000630: fa fa fa fa fd fd fd fd fd fd fd fd fa fa fa fa
  0x4c0c00000640: fd fd fd fd fd fd fd fd fa fa fa fa fd fd fd fd
  0x4c0c00000650: fd fd fd fd fa fa fa fa fd fd fd fd fd fd fd fd
Shadow byte legend (one shadow byte represents 8 application bytes):
  Addressable:           00
  Partially addressable: 01 02 03 04 05 06 07 
  Heap left redzone:       fa
  Freed heap region:       fd
  Stack left redzone:      f1
  Stack mid redzone:       f2
  Stack right redzone:     f3
  Stack after return:      f5
  Stack use after scope:   f8
  Global redzone:          f9
  Global init order:       f6
  Poisoned by user:        f7
  Container overflow:      fc
  Array cookie:            ac
  Intra object redzone:    bb
  ASan internal:           fe
  Left alloca redzone:     ca
  Right alloca redzone:    cb
  Shadow gap:              cc
==94343==ABORTING