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* posix/regcomp.c (parse_expression): If token is OP_OPEN_DUP_NUM
	and RE_CONTEXT_INVALID_DUP syntax flag is set, fail.
	* posix/regex.h (RE_CONTEXT_INVALUD_OPS): New macro.
	(RE_SYNTAX_POSIX_BASIC): Use RE_CONTEXT_INVALUD_OPS.

	* posix/regcomp.c (parse_sub_exp): In case of not-matching ( )
	return REG_EPAREN.
This commit is contained in:
Ulrich Drepper
2003-11-13 06:01:46 +00:00
parent 813ec65a4d
commit 06e8303a28
3 changed files with 22 additions and 4 deletions
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6
posix/regex.h
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@@ -175,6 +175,10 @@ typedef unsigned long int reg_syntax_t;
whether ^ should be special. */
#define RE_CARET_ANCHORS_HERE (RE_ICASE << 1)
/* If this bit is set, then \{ cannot be first in an bre or
immediately after an alternation or begin-group operator. */
#define RE_CONTEXT_INVALID_DUP (RE_CARET_ANCHORS_HERE << 1)
/* This global variable defines the particular regexp syntax to use (for
some interfaces). When a regexp is compiled, the syntax used is
stored in the pattern buffer, so changing this does not affect
@@ -229,7 +233,7 @@ extern reg_syntax_t re_syntax_options;
| RE_INTERVALS | RE_NO_EMPTY_RANGES)
#define RE_SYNTAX_POSIX_BASIC \
(_RE_SYNTAX_POSIX_COMMON | RE_BK_PLUS_QM)
(_RE_SYNTAX_POSIX_COMMON | RE_BK_PLUS_QM | RE_CONTEXT_INVALID_DUP)
/* Differs from ..._POSIX_BASIC only in that RE_BK_PLUS_QM becomes
RE_LIMITED_OPS, i.e., \? \+ \| are not recognized. Actually, this