"Cannot find member in the struct" build failure(s) — clang 10.0.0

PackageVersionSupposed error messageFull log Bug report
aegisub 3.2.2+dfsg-5util.cpp:30:2: error: no member named 'this_thread' in namespace 'std'; did you mean 'boost::this_thread'? Log
cgit 1.2.3+git2.25.1-1../filter.c:388:10: error: no member named '__fprintf_chk' in 'struct cgit_filter' Log
gridengine 8.1.9+dfsg-9../libs/gdi/sge_gdi_ctx.c:1054:19: error: no member named '__dprintf_chk' in 'struct sge_csp_path_class_str' Log
libnftnl 1.1.6-1object.c:373:19: error: no member named '__builtin___snprintf_chk' in 'struct obj_ops' Log 755956
mercator 0.3.3-5polygon_intersect.h:667:37: error: no member named 'm_orient' in 'WFMath::Polygon<2>' Log
mgba 0.7.0-1cli-debugger.c:156:23: error: no member named '__printf_chk' in 'struct CLIDebuggerBackend' Log
openvswitch 2.13.0+dfsg1-10../lib/vlog.c:1127:35: error: no member named '__syslog_chk' in 'struct syslog_class' Log

7 errors