[130] jb55@monad> tail -f ~/nix-rebuild.txt | grep -C 5 "Potentially miscompiled memcmp"                                                          ~
checking minix/config.h presence... no
checking for minix/config.h... no
   g++   ...  rbbiscan.cpp
In file included from uniset_props.cpp:32:
uniset_props.cpp: In function 'UBool icu_67::{anonymous}::versionFilter(UChar32, void*)':
cmemory.h:52:76: debug: Potentially miscompiled memcmp
   52 | #define uprv_memcmp(buffer1, buffer2, size) U_STANDARD_CPP_NAMESPACE memcmp(buffer1, buffer2,size)
uniset_props.cpp:709:12: note: in expansion of macro 'uprv_memcmp'
  709 |     return uprv_memcmp(&v, &none, sizeof(v)) > 0 && uprv_memcmp(&v, version, sizeof(v)) <= 0;
      |            ^~~~~~~~~~~
checking for suffix of executables...
--
Making all in flac
make[3]: Entering directory '/build/flac-1.3.3/src/flac'
  CC       analyze.o
  CC       decode.o
decode.c: In function 'metadata_callback':
decode.c:1310:33: debug: Potentially miscompiled memcmp
 1310 |   decoder_session->has_md5sum = memcmp(metadata->data.stream_info.md5sum, "\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0", 16);
      |                                 ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
  CC       encode.o
gcc  -g -Wall -Werror -Wextra -Wno-unused-parameter -I. -I/build/libpfm-4.11.0/perf_examples/../include -DCONFIG_PFMLIB_DEBUG -DCONFIG_PFMLIB_OS_LINUX -I. -D_GNU_SOURCE -pthread -c syst.c
gcc  -g -Wall -Werror -Wextra -Wno-unused-parameter -I. -I/build/libpfm-4.11.0/perf_examples/../include -DCONFIG_PFMLIB_DEBUG -DCONFIG_PFMLIB_OS_LINUX -I. -D_GNU_SOURCE -pthread -o syst  syst.o perf_util.o /build/libpfm-4.11.0/perf_examples/../lib/libpfm.a
--
[ 89%] Built target test_fork
In file included from /build/source/tests/../external/unity/unity.h:16,
                 from /build/source/tests/testutil_unity.hpp:36,
                 from /build/source/tests/test_mock_pub_sub.cpp:21:
/build/source/tests/test_mock_pub_sub.cpp: In function 'void test_mock_sub(bool)':
/build/source/tests/test_mock_pub_sub.cpp:193:38: debug: Potentially miscompiled memcmp
  193 |     TEST_ASSERT_EQUAL_INT (0, memcmp (buffer, "\0\4ALOL", 6));
/build/source/tests/../external/unity/unity_internals.h:658:156: note: in definition of macro 'UNITY_TEST_ASSERT_EQUAL_INT'
  658 | #define UNITY_TEST_ASSERT_EQUAL_INT(expected, actual, line, message)                             UnityAssertEqualNumber((UNITY_INT)(expected), (UNITY_INT)(actual), (message), (UNITY_LINE_TYPE)(line), UNITY_DISPLAY_STYLE_INT)
      |                                                                                                                                                            ^~~~~~
/build/source/tests/test_mock_pub_sub.cpp:193:5: note: in expansion of macro 'TEST_ASSERT_EQUAL_INT'