diff options
| author | Björn Gustavsson <[email protected]> | 2011-08-30 11:51:11 +0200 |
|---|---|---|
| committer | Björn Gustavsson <[email protected]> | 2011-10-13 14:16:00 +0200 |
| commit | 34db76765561487e526fe66d3d19ecf3b3fb9dc8 (patch) | |
| tree | 9141e3c5729e46d03c8b27b14da3b29b1e54abca /lib/stdlib | |
| parent | 6ca6dd3c670fb8185ebb9a20c2a731a7375c1cac (diff) | |
| download | otp-34db76765561487e526fe66d3d19ecf3b3fb9dc8.tar.gz otp-34db76765561487e526fe66d3d19ecf3b3fb9dc8.tar.bz2 otp-34db76765561487e526fe66d3d19ecf3b3fb9dc8.zip | |
Allow noncharacter code points in unicode encoding and decoding
The two noncharacter code points 16#FFFE and 16#FFFF were not
allowed to be encoded or decoded using the unicode module or
bit syntax. That causes an inconsistency, since the noncharacters
16#FDD0 to 16#FDEF could be encoded/decoded.
There is two ways to fix that inconsistency.
We have chosen to allow 16#FFFE and 16#FFFF to be encoded and
decoded, because the noncharacters could be useful internally
within an application and it will make encoding and decoding
slightly faster.
Reported-by: Alisdair Sullivan
Diffstat (limited to 'lib/stdlib')
| -rw-r--r-- | lib/stdlib/doc/src/unicode.xml | 3 | ||||
| -rw-r--r-- | lib/stdlib/test/unicode_SUITE.erl | 4 |
2 files changed, 2 insertions, 5 deletions
diff --git a/lib/stdlib/doc/src/unicode.xml b/lib/stdlib/doc/src/unicode.xml index d02763f75c..1001ebbae4 100644 --- a/lib/stdlib/doc/src/unicode.xml +++ b/lib/stdlib/doc/src/unicode.xml @@ -203,8 +203,7 @@ <item>greater than <c>16#10FFFF</c> (the maximum unicode character),</item> <item>in the range <c>16#D800</c> to <c>16#DFFF</c> - (invalid unicode range)</item> - <item>or equal to 16#FFFE or 16#FFFF (non characters)</item> + (invalid range reserved for UTF-16 surrogate pairs)</item> </list> is found. </item> diff --git a/lib/stdlib/test/unicode_SUITE.erl b/lib/stdlib/test/unicode_SUITE.erl index 9aa800209d..4055af2741 100644 --- a/lib/stdlib/test/unicode_SUITE.erl +++ b/lib/stdlib/test/unicode_SUITE.erl @@ -322,7 +322,7 @@ roundtrips(Config) when is_list(Config) -> ex_roundtrips(Config) when is_list(Config) -> ?line L1 = ranges(0, 16#D800 - 1, erlang:system_info(context_reductions) * 11), - ?line L2 = ranges(16#DFFF + 1, 16#FFFE - 1, + ?line L2 = ranges(16#DFFF + 1, 16#10000 - 1, erlang:system_info(context_reductions) * 11), %?line L3 = ranges(16#FFFF + 1, 16#10FFFF, % erlang:system_info(context_reductions) * 11), @@ -569,7 +569,6 @@ utf16_illegal_sequences_bif(Config) when is_list(Config) -> ex_utf16_illegal_sequences_bif(Config) when is_list(Config) -> ?line utf16_fail_range_bif_simple(16#10FFFF+1, 16#10FFFF+512), %Too large. ?line utf16_fail_range_bif(16#D800, 16#DFFF), %Reserved for UTF-16. - ?line utf16_fail_range_bif(16#FFFE, 16#FFFF), %Non-characters. ?line lonely_hi_surrogate_bif(16#D800, 16#DBFF,incomplete), ?line lonely_hi_surrogate_bif(16#DC00, 16#DFFF,error), @@ -644,7 +643,6 @@ utf8_illegal_sequences_bif(Config) when is_list(Config) -> ex_utf8_illegal_sequences_bif(Config) when is_list(Config) -> ?line fail_range_bif(16#10FFFF+1, 16#10FFFF+512), %Too large. ?line fail_range_bif(16#D800, 16#DFFF), %Reserved for UTF-16. - ?line fail_range_bif(16#FFFE, 16#FFFF), %Reserved (BOM). %% Illegal first character. ?line [fail_bif(<<I,16#8F,16#8F,16#8F>>,unicode) || I <- lists:seq(16#80, 16#BF)], |