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* charset.c (_cpp_valid_ucn): Update C++0x restrictions.

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From-SVN: r152614
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Jason Merrill 2009-10-09 20:39:46 -04:00 committed by Jason Merrill
parent 2214382ca9
commit 30c99a9e19
4 changed files with 39 additions and 6 deletions
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7
gcc/testsuite/ChangeLog
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@ -1,3 +1,9 @@
2009-10-09 Jason Merrill <jason@redhat.com>
* g++.dg/cpp/ucn-1.C: New.
2009-10-08 Jason Merrill <jason@redhat.com>
2009-10-09 Janus Weil <janus@gcc.gnu.org>
PR fortran/41585
@ -60,6 +66,7 @@
2009-10-08 Jason Merrill <jason@redhat.com>
PR c++/36816
* g++.dg/cpp0x/rv-deduce.C: New.
PR c++/37177

13
gcc/testsuite/g++.dg/cpp/ucn-1.C Normal file
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@ -0,0 +1,13 @@
// http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2007/n2170.html
// { dg-options "-std=c++0x -fextended-identifiers" }
int main()
{
"\u0041"; // 'A' UCN is OK in string literal
'\u0041'; // also OK in character literal
int c\u0041c; // { dg-error "not valid in an identifier" }
int c\u0024c; // $ is OK; not part of basic source char set
U"\uD800"; // { dg-error "not a valid universal character" }
}

4
libcpp/ChangeLog
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@ -1,3 +1,7 @@
2009-10-09 Jason Merrill <jason@redhat.com>
* charset.c (_cpp_valid_ucn): Update C++0x restrictions.
2009-10-09 Neil Vachharajani <nvachhar@google.com>
* directives.c (DIRECTIVE_TABLE): Remove DEPRECATED from ident and

21
libcpp/charset.c
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@ -948,10 +948,16 @@ ucn_valid_in_identifier (cpp_reader *pfile, cppchar_t c,
ISO/IEC 10646 is NNNNNNNN; the character designated by the
universal character name \uNNNN is that character whose character
short name in ISO/IEC 10646 is 0000NNNN. If the hexadecimal value
for a universal character name is less than 0x20 or in the range
0x7F-0x9F (inclusive), or if the universal character name
designates a character in the basic source character set, then the
program is ill-formed.
for a universal character name corresponds to a surrogate code point
(in the range 0xD800-0xDFFF, inclusive), the program is ill-formed.
Additionally, if the hexadecimal value for a universal-character-name
outside a character or string literal corresponds to a control character
(in either of the ranges 0x00-0x1F or 0x7F-0x9F, both inclusive) or to a
character in the basic source character set, the program is ill-formed.
C99 6.4.3: A universal character name shall not specify a character
whose short identifier is less than 00A0 other than 0024 ($), 0040 (@),
or 0060 (`), nor one in the range D800 through DFFF inclusive.
*PSTR must be preceded by "\u" or "\U"; it is assumed that the
buffer end is delimited by a non-hex digit. Returns zero if the
@ -1018,9 +1024,12 @@ _cpp_valid_ucn (cpp_reader *pfile, const uchar **pstr,
(int) (str - base), base);
result = 1;
}
/* The standard permits $, @ and ` to be specified as UCNs. We use
hex escapes so that this also works with EBCDIC hosts. */
/* The C99 standard permits $, @ and ` to be specified as UCNs. We use
hex escapes so that this also works with EBCDIC hosts.
C++0x permits everything below 0xa0 within literals;
ucn_valid_in_identifier will complain about identifiers. */
else if ((result < 0xa0
&& !CPP_OPTION (pfile, cplusplus)
&& (result != 0x24 && result != 0x40 && result != 0x60))
|| (result & 0x80000000)
|| (result >= 0xD800 && result <= 0xDFFF))