"Cannot use -o use multiple output" build failure(s) — clang 10.0.0

This command is failing under clang (with a wrong error message) while it is working with gcc.
clang main.c plop3.h -o main
PackageVersionSupposed error messageFull log Bug report
compiz-boxmenu 1.1.12-2: error: cannot specify -o when generating multiple output files Log
dascrubber 1.1-1: error: cannot specify -o when generating multiple output files Log
dazzdb 1.0+git20200115.d8adde7-2: error: cannot specify -o when generating multiple output files Log
genometester 4.0+git20180508.a9c14a6+dfsg-1clang: error: cannot specify -o when generating multiple output files Log
langford 0.0.20130228-6clang: error: cannot specify -o when generating multiple output files Log
libssw 1.1-9clang: error: cannot specify -o when generating multiple output files Log
mdm 0.1.3-2.1clang: error: cannot specify -o when generating multiple output files Log
princeprocessor 0.22-1clang: error: cannot specify -o when generating multiple output files Log
tennix 1.1-3.2clang: error: cannot specify -o when generating multiple output files Log

9 errors