Compiler "note" in test_addr.c: variable tracking size limit exceeded with ‘-fvar-tracking-assignments’

Building with GCC 9.1.1, I see these:

src/test/test_addr.c: In function ‘test_addr_parse’:
src/test/test_addr.c:1167:1: note: variable tracking size limit exceeded with ‘-fvar-tracking-assignments’, retrying without
 1167 | test_addr_parse(void *arg)
      | ^~~~~~~~~~~~~~~

This seems to be new in 0.4.2.