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* configure.ac: Don't use -Wnested-externs, as it's incompatible with the new verify.h implementation. * data/c.m4 (b4_yy_symbol_print_generate): YYUSE (yyoutput). * data/glr.c (YYUSE): Depend on __GNUC__ as well. * data/yacc.c (YYUSE): Likewise. * data/lalr1.cc (yysyntax_error_): YYUSE (yystate). * lib/subpipe.c (end_of_output_subpipe): The args are unused. * src/parse-gram.y (declaration): Don't pass a string constant to a function that expects char *, since GCC might complain about the constant value. * src/reader.c (symbol_typed_p): Add parens to pacify GCC. * tests/cxx-type.at (_AT_TEST_GLR_CXXTYPES): #undef yylloc and yylval before #defining them. * tests/glr-regression.at (Incorrectly initialized location for empty right-hand side in GLR): In yyerror, use the msg arg. (Corrupted semantic options if user action cuts parse): (Incorrect lookahead during deterministic GLR): (Incorrect lookahead during nondeterministic GLR): Don't name a local var 'index'; it shadows string.h's 'index'.