library/string.m:
Add index_next_repl, unsafe_index_next_repl, prev_index_repl,
unsafe_prev_index_repl predicates that return an indication if a
replacement character was returned because an ill-formed code unit
sequence was encountered.
Add more pragma inlines for indexing predicates.
Remove may_not_duplicate attribute on the Erlang version of
unsafe_prev_index_repl, which would conflict with the pragma inline
declaration. This requires the helper function do_unsafe_prev_index
to be exported.
tests/hard_coded/string_append_ooi_ilseq.m:
tests/hard_coded/string_set_char_ilseq.m:
Use index_next_repl in test cases.
NEWS:
Announce additions.
library/string.m:
Define behaviour of set_char, det_set_char and unsafe_set_char on
ill-formed sequences. Also define them to throw an exception on an
attempt to set a null character or surrogate code point in a UTF-8
string.
Delete claim that unsafe_set_char is constant time. That would only
be true for the destructive mode of unsafe_set_char, and that mode
has been disabled for a long time.
Implement the defined behaviour for C and C# versions of
unsafe_set_char. The Java version already behaved as defined.
Use unsafe_set_char to implement set_char instead of duplicating
foreign code.
Replace a couple of uses of strcpy with MR_memcpy as it was
convenient to do so. (On OpenBSD, the linker issues a warning
whenever strcpy is used. Avoiding the warning is not high priority
but we might still like to eliminate all uses of strcpy eventually.)
tests/hard_coded/Mmakefile:
tests/hard_coded/string_set_char_ilseq.exp:
tests/hard_coded/string_set_char_ilseq.exp2:
tests/hard_coded/string_set_char_ilseq.m:
Add test case.
