41 lines
1.6 KiB
Diff
41 lines
1.6 KiB
Diff
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*** boost/regex/v4/basic_regex_parser.hpp.orig 2008-01-14 12:53:01.000000000 -0600
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--- boost/regex/v4/basic_regex_parser.hpp 2008-01-14 12:57:25.000000000 -0600
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*************** bool basic_regex_parser<charT, traits>::
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*** 777,782 ****
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--- 777,783 ----
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case syntax_element_restart_continue:
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case syntax_element_jump:
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case syntax_element_startmark:
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+ case syntax_element_backstep:
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// can't legally repeat any of the above:
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fail(regex_constants::error_badrepeat, m_position - m_base);
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return false;
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*************** bool basic_regex_parser<charT, traits>::
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*** 1862,1867 ****
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--- 1863,1869 ----
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if(markid == -4)
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{
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re_syntax_base* b = this->getaddress(expected_alt_point);
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+ // Make sure we have exactly one alternative following this state:
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if(b->type != syntax_element_alt)
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{
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re_alt* alt = static_cast<re_alt*>(this->insert_state(expected_alt_point, syntax_element_alt, sizeof(re_alt)));
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*************** bool basic_regex_parser<charT, traits>::
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*** 1872,1877 ****
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--- 1874,1888 ----
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fail(regex_constants::error_bad_pattern, m_position - m_base);
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return false;
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}
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+ // check for invalid repetition of next state:
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+ b = this->getaddress(expected_alt_point);
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+ b = this->getaddress(static_cast<re_alt*>(b)->next.i, b);
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+ if((b->type != syntax_element_assert_backref)
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+ && (b->type != syntax_element_startmark))
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+ {
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+ fail(regex_constants::error_badrepeat, m_position - m_base);
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+ return false;
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+ }
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}
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//
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// append closing parenthesis state:
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