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The following pseudo-patch regenerates the libcpp tables with Unicode 15.0.0 which added 4489 new characters. As mentioned previously, this isn't just a matter of running the two libcpp/make*.cc programs on the new Unicode files, but one needs to manually update a table inside of makeuname2c.cc according to a table in Unicode text (which is partially reflected in the text files, but e.g. in Unicode 14.0.0 not 100% accurately, in 15.0.0 actually accurately). I've also added some randomly chosen subset of those 4489 new characters to a testcase. 2022-11-04 Jakub Jelinek <jakub@redhat.com> gcc/testsuite/ * c-c++-common/cpp/named-universal-char-escape-1.c: Add tests for some characters newly added in Unicode 15.0.0. libcpp/ * makeuname2c.cc (struct generated): Update from Unicode 15.0.0 table 4-8. * ucnid.h: Regenerated for Unicode 15.0.0. * uname2c.h: Likewise.