87f85ea066
PR c/10604 * c-common.c (warn_sign_compare): Initialize to -1. * c-opts.c (c_common_init_options): Don't set warn_sign_compare here. (c_common_decode_option <OPT_Wall>): Set warn_sign_compare for C++ only. (c_common_post_options): Set warn_sign_compare from extra_warnings if it's still -1 at this point. * toplev.c (maybe_warn_unused_parameter): New static variable. (set_Wextra): New static function. (W_options): Remove "extra". (decode_W_option): Call set_Wextra. (independent_decode_option): Likewise. (set_Wunused): Cooperate with set_Wextra in setting warn_unused_parameter. (rest_of_compilation): No need to check extra_warnings as well as warn_uninitialized. * c-typeck.c (build_binary_op, build_conditional_expr): No need to check extra_warnings as well as warn_sign_compare. (internal_build_compound_expr): No need to check extra_warnings as well as warn_unused_value. * function.c (expand_function_end): No need to check extra_warnings as well as warn_unused_parameter. * stmt.c (expand_expr_stmt_value): No need to check extra_warnings as well as warn_unused_value. * cp/typeck.c (build_x_compound_expr): No need to check extra_warnings as well as warn_unused_value. * doc/invoke.texi: Clarify documentation of -Wsign-compare. * gcc.dg/compare7.c, g++.dg/warn/compare1.C: New testcases. * Makefile.in: Disable -Werror for gengtype-lex.o. From-SVN: r66436
This directory contains the GNU Compiler Collection (GCC). The GNU Compiler Collection is free software. See the file COPYING for copying permission. The manuals, and some of the runtime libraries, are under different terms; see the individual source files for details. The directory INSTALL contains copies of the installation information as HTML and plain text. The source of this information is gcc/doc/install.texi. The installation information includes details of what is included in the GCC sources and what files GCC installs. See the file gcc/doc/gcc.texi (together with other files that it includes) for usage and porting information. An online readable version of the manual is in the files gcc/doc/gcc.info*. See http://gcc.gnu.org/bugs.html for how to report bugs usefully.