PATCH RFA: C++ frontend: Don't warn about shifts which will not be run

[Joseph S. Myers]

On Mon, 15 Jun 2009, Ian Lance Taylor wrote:

> 2009-06-15  Ian Lance Taylor  <iant@google.com>
> 
> 	* c-common.c (skip_evaluation): Don't define.
> 	(c_inhibit_evaluation_warnings): Define global variable.
> 	(overflow_warning): Check c_inhibit_evaluation_warnings rather
> 	than skip_evaluation.
> 	(convert_and_check, warn_for_div_by_zero): Likewise.
> 	* c-common.h (skip_evaluation): Don't declare.
> 	(c_inhibit_evaluation_warnings): Declare.
> 	* c-parser.c (c_parser_typeof_specifier): Set
> 	c_inhibit_evaluation_warnings rather than skip_evaluation.
> 	(c_parser_conditional_expression): Likewise.
> 	(c_parser_binary_expression): Likewise.
> 	(c_parser_sizeof_expression): Likewise.
> 	(c_parser_alignof_expression): Likewise.
> 	* c-typeck.c (build_indirect_ref): Check
> 	c_inhibit_evaluation_warnings rather than skip_evaluation.
> 	(build_conditional_expr, build_binary_op): Likewise.

The C changes are OK.

-- 
Joseph S. Myers
joseph@codesourcery.com