https://bugs.exim.org/show_bug.cgi?id=2399
--- Comment #1 from Philip Hazel <[email protected]> --- The string you quote is not, as far as I can see, a valid UTF string. I do not know how PHP calls PCRE2, nor how it interprets the escaped values in your string. I suspect it is somehow calling pcre2_match() with an invalid UTF string and the PCRE2_NO_UTF_CHECK option. This is documented to cause undefined behaviour. Is PHP an 8-bit or a 16-bit system? Can you find out exactly what byte or 16-bit values are in the string? Then I can try to test it with pcre2test just to be sure. -- You are receiving this mail because: You are on the CC list for the bug. -- ## List details at https://lists.exim.org/mailman/listinfo/pcre-dev
