[Bug c++/11667] wider-than-int enums never compare equal to 0

[cvs-commit at gcc dot gnu dot org]

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http://gcc.gnu.org/bugzilla/show_bug.cgi?id=11667



------- Additional Comments From cvs-commit at gcc dot gnu dot org  2003-07-29 01:14 -------
Subject: Bug 11667

CVSROOT:	/cvs/gcc
Module name:	gcc
Changes by:	mmitchel@gcc.gnu.org	2003-07-29 01:14:25

Modified files:
	gcc            : ChangeLog c-common.c stor-layout.c tree.h 
	gcc/cp         : ChangeLog Make-lang.in call.c class.c decl.c 
	                 pt.c rtti.c typeck.c 
	gcc/testsuite  : ChangeLog 
	gcc/testsuite/g++.dg/template: overload1.C 
Added files:
	gcc/testsuite/g++.dg/init: enum2.C 

Log message:
	PR c++/11667
	* c-common.c (shorten_compare): Take into account differences
	between C and C++ representation for enumeration types.
	* tree.h (set_min_and_max_values_for_integral_type): Declare.
	* stor-layout.c (set_min_and_max_values_for_integral_type): New
	function, broken out from ...
	(fixup_signed_type): ... here and ...
	(fixup_unsigned_type): ... here.
	
	PR c++/11667
	* call.c (standard_conversion): Allow all integral->enumeral
	conversions, after marking them as bad.
	* decl.c (finish_enum): Make sure that all enumerators are
	properly converted to the underlying type.
	(build_enumerator): Set DECL_CONTEXT for namespace-scope
	enumeration types.
	* pt.c (tsubst_copy): Adjust handling of CONST_DECLs accordingly.
	(tsubst_enum): Tidy.
	
	* Make-lang.in (typeck.o): Depend on convert.h.
	(class.o): Likewise.
	(rtti.o): Likewise.
	* call.c: Include convert.h.
	(convert_arg_to_ellipsis): Use convert_to_real.
	* class.c: Include convert.h.
	(build_base_path): Use convert_to_integer.
	* rtti.c: Include convert.h.
	(build_headof): Use convert_to_integer.
	* typeck.c: Include convert.h.
	(decay_conversion): Use convert_to_integer.
	(build_unary_op): Use build_nop.
	(get_delta_difference): Use convert_to_integer.
	(build_ptrmemfunc): Avoid unncessary conversions.

Patches:
http://gcc.gnu.org/cgi-bin/cvsweb.cgi/gcc/gcc/ChangeLog.diff?cvsroot=gcc&r1=2.641&r2=2.642
http://gcc.gnu.org/cgi-bin/cvsweb.cgi/gcc/gcc/c-common.c.diff?cvsroot=gcc&r1=1.439&r2=1.440
http://gcc.gnu.org/cgi-bin/cvsweb.cgi/gcc/gcc/stor-layout.c.diff?cvsroot=gcc&r1=1.164&r2=1.165
http://gcc.gnu.org/cgi-bin/cvsweb.cgi/gcc/gcc/tree.h.diff?cvsroot=gcc&r1=1.430&r2=1.431
http://gcc.gnu.org/cgi-bin/cvsweb.cgi/gcc/gcc/cp/ChangeLog.diff?cvsroot=gcc&r1=1.3563&r2=1.3564
http://gcc.gnu.org/cgi-bin/cvsweb.cgi/gcc/gcc/cp/Make-lang.in.diff?cvsroot=gcc&r1=1.158&r2=1.159
http://gcc.gnu.org/cgi-bin/cvsweb.cgi/gcc/gcc/cp/call.c.diff?cvsroot=gcc&r1=1.416&r2=1.417
http://gcc.gnu.org/cgi-bin/cvsweb.cgi/gcc/gcc/cp/class.c.diff?cvsroot=gcc&r1=1.557&r2=1.558
http://gcc.gnu.org/cgi-bin/cvsweb.cgi/gcc/gcc/cp/decl.c.diff?cvsroot=gcc&r1=1.1102&r2=1.1103
http://gcc.gnu.org/cgi-bin/cvsweb.cgi/gcc/gcc/cp/pt.c.diff?cvsroot=gcc&r1=1.740&r2=1.741
http://gcc.gnu.org/cgi-bin/cvsweb.cgi/gcc/gcc/cp/rtti.c.diff?cvsroot=gcc&r1=1.170&r2=1.171
http://gcc.gnu.org/cgi-bin/cvsweb.cgi/gcc/gcc/cp/typeck.c.diff?cvsroot=gcc&r1=1.487&r2=1.488
http://gcc.gnu.org/cgi-bin/cvsweb.cgi/gcc/gcc/testsuite/ChangeLog.diff?cvsroot=gcc&r1=1.2925&r2=1.2926
http://gcc.gnu.org/cgi-bin/cvsweb.cgi/gcc/gcc/testsuite/g++.dg/init/enum2.C.diff?cvsroot=gcc&r1=1.1&r2=1.2
http://gcc.gnu.org/cgi-bin/cvsweb.cgi/gcc/gcc/testsuite/g++.dg/template/overload1.C.diff?cvsroot=gcc&r1=1.1&r2=1.2