This is more visible now that --without-included-regex is the default, but has actually been there more or less forever. The included test case fails since 2.6 and requires --without-included-regex to fail in those versions.
Paolo Bonzini (2): dfa: process range expressions consistently with system regex tests: add testcase for previous fix NEWS | 6 ++++++ src/dfa.c | 27 ++++++++++++++++----------- tests/Makefile.am | 1 + tests/inconsistent-range | 17 +++++++++++++++++ 4 files changed, 40 insertions(+), 11 deletions(-) create mode 100644 tests/inconsistent-range -- 1.7.2.3