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re PR c++/13358 (long long and C++ do not mix well)

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2009-04-21  Manuel Lopez-Ibanez  <manu@gcc.gnu.org>

	PR c++/13358
	* doc/invoke.texi (-Wlong-long): Update description.
	* c-lex (interpret_integer): Only warn if there was no previous
	overflow and -Wlong-long is enabled.
	* c-decl.c (declspecs_add_type): Drop redundant flags.
	* c.opt (Wlong-long): Init to -1.
	* c-opts.c (sanitize_cpp_opts): Synchronize cpp's warn_long_long
	and front-end warn_long_long. Wlong-long only depends on other
	flags if it is uninitialized.
	* c-parser.c (disable_extension_diagnostics): warn_long_long is
	the same for CPP and FE.
	(restore_extension_diagnostics): Likewise.
libcpp/
	* init.c (cpp_create_reader): Wlong_long is disabled by default.
	* expr.c (cpp_classify_number): Give different messages for C and
	C++ front-ends.
cp/
	* parser.c (cp_parser_check_decl_spec): Drop redundant flags.
	* error.c (pedwarn_cxx98): New.
	* cp-tree.h (pedwarn_cxx98): Declare.
testsuite/
	* gcc.dg/wtr-int-type-1.c: Use two dg-warning to match two
	messages. Test for "long long" in system headers.
	* gcc.dg/c99-longlong-2.c: New.
	* g++.dg/warn/pr13358.C: New.
	* g++.dg/warn/pr13358-2.C: New.
	* g++.dg/warn/pr13358-3.C: New.
	* g++.dg/warn/pr13358-4.C: New.

From-SVN: r146459
This commit is contained in:
Manuel López-Ibáñez 2009-04-20 22:12:52 +00:00
parent 37041295f5
commit 9c650d90ab
22 changed files with 213 additions and 40 deletions
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8
libcpp/expr.c
View file

@ -419,10 +419,12 @@ cpp_classify_number (cpp_reader *pfile, const cpp_token *token)
}
if ((result & CPP_N_WIDTH) == CPP_N_LARGE
&& ! CPP_OPTION (pfile, c99)
&& CPP_OPTION (pfile, warn_long_long))
cpp_error (pfile, CPP_DL_PEDWARN,
"use of C99 long long integer constant");
cpp_error (pfile,
CPP_OPTION (pfile, c99) ? CPP_DL_WARNING : CPP_DL_PEDWARN,
CPP_OPTION (pfile, cplusplus)
? "use of C++0x long long integer constant"
: "use of C99 long long integer constant");
result |= CPP_N_INTEGER;
}