[Bug c++/44062] (void)var; doesn't prevent 'set but not used' warning
jakub at gcc dot gnu dot org
gcc-bugzilla@gcc.gnu.org
Tue May 11 18:13:00 GMT 2010
------- Comment #5 from jakub at gcc dot gnu dot org 2010-05-11 18:12 -------
Subject: Bug 44062
Author: jakub
Date: Tue May 11 18:12:28 2010
New Revision: 159286
URL: http://gcc.gnu.org/viewcvs?root=gcc&view=rev&rev=159286
Log:
PR c++/44062
* c-parser.c (c_parser_expression): Mark LHS of a comma
expression as read if it is a decl, handled component or
COMPOUND_EXPR with that on the RHS.
* c-typeck.c (c_process_expr_stmt): Mark RHS of COMPOUND_EXPR
if it is a decl or handled component.
* semantics.c (finish_expr_stmt): Don't call mark_exp_read here...
* cvt.c (convert_to_void): ... but here. If expr is a COMPOUND_EXPR,
look at its second operand.
* c-c++-common/Wunused-var-7.c: New test.
* g++.dg/warn/Wunused-var-9.C: New test.
Added:
trunk/gcc/testsuite/c-c++-common/Wunused-var-7.c
trunk/gcc/testsuite/g++.dg/warn/Wunused-var-9.C
Modified:
trunk/gcc/ChangeLog
trunk/gcc/c-parser.c
trunk/gcc/c-typeck.c
trunk/gcc/cp/ChangeLog
trunk/gcc/cp/cvt.c
trunk/gcc/cp/semantics.c
trunk/gcc/testsuite/ChangeLog
--
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=44062
More information about the Gcc-bugs
mailing list