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system.h (HAVE_DESIGNATED_INITIALIZERS, [...]): Do not use "defined" in macros.

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gcc:
2016-11-23  Paolo Bonzini  <bonzini@gnu.org>

	* system.h (HAVE_DESIGNATED_INITIALIZERS,
	HAVE_DESIGNATED_UNION_INITIALIZERS): Do not use
	"defined" in macros.
	* doc/cpp.texi (Defined): Mention -Wexpansion-to-defined.
	* doc/cppopts.texi (Invocation): Document -Wexpansion-to-defined.
	* doc/invoke.texi (Warning Options): Document -Wexpansion-to-defined.

gcc/c-family:
2016-11-23  Paolo Bonzini  <bonzini@gnu.org>

	* c.opt (Wexpansion-to-defined): New.

gcc/testsuite:
2016-11-23  Paolo Bonzini  <bonzini@gnu.org>

	* gcc.dg/cpp/defined.c: Mark newly introduced warnings and
	adjust for warning->pedwarn change.
	* gcc.dg/cpp/defined-syshdr.c,
	gcc.dg/cpp/defined-Wexpansion-to-defined.c,
	gcc.dg/cpp/defined-Wextra-Wno-expansion-to-defined.c,
	gcc.dg/cpp/defined-Wextra.c,
	gcc.dg/cpp/defined-Wno-expansion-to-defined.c: New testcases.

libcpp:
2016-11-23  Paolo Bonzini  <bonzini@gnu.org>

	* include/cpplib.h (struct cpp_options): Add new member
	warn_expansion_to_defined.
	(CPP_W_EXPANSION_TO_DEFINED): New enum member.
	* expr.c (parse_defined): Warn for all uses of "defined"
	in macros, and tie warning to CPP_W_EXPANSION_TO_DEFINED.
	Make it a pedwarning instead of a warning.
	* system.h (HAVE_DESIGNATED_INITIALIZERS): Do not use
	"defined" in macros.

From-SVN: r242743
This commit is contained in:
Paolo Bonzini 2016-11-23 10:06:07 +00:00 • committed by Paolo Bonzini
parent baf53c4739
commit fb2675cb46
18 changed files with 232 additions and 18 deletions
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7
libcpp/include/cpplib.h
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@ -415,6 +415,10 @@ struct cpp_options
/* Nonzero means warn if undefined identifiers are evaluated in an #if. */
unsigned char warn_undef;
/* Nonzero means warn if "defined" is encountered in a place other than
an #if. */
unsigned char warn_expansion_to_defined;
/* Nonzero means warn of unused macros from the main file. */
unsigned char warn_unused_macros;
@ -1040,7 +1044,8 @@ enum {
CPP_W_DATE_TIME,
CPP_W_PEDANTIC,
CPP_W_C90_C99_COMPAT,
CPP_W_CXX11_COMPAT
CPP_W_CXX11_COMPAT,
CPP_W_EXPANSION_TO_DEFINED
};
/* Output a diagnostic of some kind. */