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| author | Marek Polacek <polacek@redhat.com> | 2014-08-10 06:10:49 +0000 |
|---|---|---|
| committer | Marek Polacek <mpolacek@gcc.gnu.org> | 2014-08-10 06:10:49 +0000 |
| commit | f3bede718836610fd741175f4a1b74ba5717e283 (patch) | |
| tree | ad84805c19739010caa9af61cb0d2c384e5aa852 /gcc/doc | |
| parent | 7a9f1eed30e169e4d1cfbe4167190db495213406 (diff) | |
| download | gcc-f3bede718836610fd741175f4a1b74ba5717e283.zip gcc-f3bede718836610fd741175f4a1b74ba5717e283.tar.gz gcc-f3bede718836610fd741175f4a1b74ba5717e283.tar.bz2 | |
re PR c/51849 (-Wc99-compat would be considered useful)
PR c/51849
gcc/
* gcc/doc/invoke.texi: Document -Wc90-c99-compat.
gcc/c-family/
* c-opts.c (sanitize_cpp_opts): Pass warn_c90_c99_compat to libcpp.
* c.opt (Wc90-c99-compat): Add option.
gcc/c/
* c-decl.c (build_array_declarator): Remove check for !flag_isoc99.
Call pedwarn_c90 instead of pedwarn.
(check_bitfield_type_and_width): Likewise.
(declspecs_add_qual): Likewise.
(declspecs_add_type): Likewise.
(warn_variable_length_array): Unify function for -pedantic and -Wvla.
Adjust to only call pedwarn_c90.
(grokdeclarator): Remove pedantic && !flag_isoc99 check. Call
pedwarn_c90 instead of pedwarn.
* c-errors.c (pedwarn_c90): Handle -Wc90-c99-compat.
* c-parser.c (disable_extension_diagnostics): Handle
warn_c90_c99_compat.
(restore_extension_diagnostics): Likewise.
(c_parser_enum_specifier): Remove check for !flag_isoc99. Call
pedwarn_c90 instead of pedwarn.
(c_parser_initelt): Likewise.
(c_parser_postfix_expression): Likewise.
(c_parser_postfix_expression_after_paren_type): Likewise.
(c_parser_compound_statement_nostart): Remove check for !flag_isoc99.
* c-tree.h: Fix formatting.
* c-typeck.c (build_array_ref): Remove check for !flag_isoc99. Call
pedwarn_c90 instead of pedwarn.
gcc/testsuite/
* gcc.dg/Wc90-c99-compat-1.c: New test.
* gcc.dg/Wc90-c99-compat-2.c: New test.
* gcc.dg/Wc90-c99-compat-3.c: New test.
* gcc.dg/Wc90-c99-compat-4.c: New test.
* gcc.dg/Wc90-c99-compat-5.c: New test.
* gcc.dg/Wc90-c99-compat-6.c: New test.
* gcc.dg/wvla-1.c: Adjust dg-warning.
* gcc.dg/wvla-2.c: Adjust dg-warning.
* gcc.dg/wvla-4.c: Adjust dg-warning.
* gcc.dg/wvla-6.c: Adjust dg-warning.
libcpp/
* lex.c (_cpp_lex_direct): Warn when -Wc90-c99-compat is in effect.
* charset.c (_cpp_valid_ucn): Likewise.
* include/cpplib.h (cpp_options): Add cpp_warn_c90_c99_compat.
* macro.c (replace_args): Warn when -Wc90-c99-compat is in effect.
(parse_params): Likewise.
From-SVN: r213786
Diffstat (limited to 'gcc/doc')
| -rw-r--r-- | gcc/doc/invoke.texi | 10 |
1 files changed, 10 insertions, 0 deletions
diff --git a/gcc/doc/invoke.texi b/gcc/doc/invoke.texi index 3582035..fdb0b84 100644 --- a/gcc/doc/invoke.texi +++ b/gcc/doc/invoke.texi @@ -241,6 +241,7 @@ Objective-C and Objective-C++ Dialects}. -w -Wextra -Wall -Waddress -Waggregate-return @gol -Waggressive-loop-optimizations -Warray-bounds @gol -Wno-attributes -Wno-builtin-macro-redefined @gol +-Wc90-c99-compat @gol -Wc++-compat -Wc++11-compat -Wcast-align -Wcast-qual @gol -Wchar-subscripts -Wclobbered -Wcomment -Wconditionally-supported @gol -Wconversion -Wcoverage-mismatch -Wdate-time -Wdelete-incomplete -Wno-cpp @gol @@ -4517,6 +4518,15 @@ example, warn if an unsigned variable is compared against zero with Warn whenever a function call is cast to a non-matching type. For example, warn if @code{int malloc()} is cast to @code{anything *}. +@item -Wc90-c99-compat @r{(C and Objective-C only)} +@opindex Wc90-c99-compat +@opindex Wno-c90-c99-compat +Warn about features not present in ISO C90, but present in ISO C99. +For instance, warn about use of variable length arrays, @code{long long} +type, @code{bool} type, compound literals, designated initializers, and so +on. This option is independent of the standards mode. Warnings are disabled +in the expression that follows @code{__extension__}. + @item -Wc++-compat @r{(C and Objective-C only)} Warn about ISO C constructs that are outside of the common subset of ISO C and ISO C++, e.g.@: request for implicit conversion from |