[Bug c/23722] bad error recovery with if blocks and else

["manu at gcc dot gnu dot org" <gcc-bugzilla at gcc dot gnu dot org>]

------- Comment #5 from manu at gcc dot gnu dot org  2007-11-26 19:02 -------
Subject: Bug 23722

Author: manu
Date: Mon Nov 26 19:01:54 2007
New Revision: 130446

URL: http://gcc.gnu.org/viewcvs?root=gcc&view=rev&rev=130446
Log:
2007-11-26  Manuel Lopez-Ibanez  <manu@gcc.gnu.org>

        PR c/23722
        * c-parser.c (struct c_parser): New bit in_if_block.
        (c_parser_compound_statement_nostart): Handle unexpected 'else'
        keyword.
        (c_parser_statement_after_labels): Set in_if_block to false while
        parsing.
        (c_parser_if_body): Don't call c_parser_statement_after_labels if
        a semicolon is found, just consume it. Don't call
        c_parser_statement_after_labels if an open brace is found, call
        c_parser_compound_statement instead.
        (c_parser_else_body): New.
        (c_parser_if_statement): Set in_if_block to true when parsing the
        body of the 'if' statement. Use c_parser_else_body.

testsuite/
        * gcc.dg/cpp/19990413-1.c: Update.
        * gcc.dg/parse-else-error.c: New.
        * gcc.dg/parse-else-error-2.c: New.
        * gcc.dg/parse-else-error-3.c: New.
        * gcc.dg/parse-else-error-4.c: New.

Added:
    trunk/gcc/testsuite/gcc.dg/parse-else-error-2.c
    trunk/gcc/testsuite/gcc.dg/parse-else-error-3.c
    trunk/gcc/testsuite/gcc.dg/parse-else-error-4.c
    trunk/gcc/testsuite/gcc.dg/parse-else-error.c
Modified:
    trunk/gcc/ChangeLog
    trunk/gcc/c-parser.c
    trunk/gcc/testsuite/ChangeLog
    trunk/gcc/testsuite/gcc.dg/cpp/19990413-1.c


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http://gcc.gnu.org/bugzilla/show_bug.cgi?id=23722