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[Bug c++/17120] [3.5 regression] warning: suggest parentheses around assignment used as truth value
- From: "reichelt at gcc dot gnu dot org" <gcc-bugzilla at gcc dot gnu dot org>
- To: gcc-bugs at gcc dot gnu dot org
- Date: 20 Aug 2004 15:11:31 -0000
- Subject: [Bug c++/17120] [3.5 regression] warning: suggest parentheses around assignment used as truth value
- References: <20040820132105.17120.reichelt@gcc.gnu.org>
- Reply-to: gcc-bugzilla at gcc dot gnu dot org
------- Additional Comments From reichelt at gcc dot gnu dot org 2004-08-20 15:11 -------
As for a testcase, one should probably extend Wparentheses-3.C a little bit:
====================================================================
--- Wparentheses-3.C 2004-08-20 17:07:20.000000000 +0200
+++ Wparentheses-3.C 2004-08-20 17:08:21.000000000 +0200
@@ -1,5 +1,5 @@
// Test that -Wparentheses does not give bogus warnings in the
-// presence of templates. Bug 17041.
+// presence of templates. PR c++/17041 and PR c++/17120.
// { dg-do compile }
// { dg-options "-Wparentheses" }
@@ -7,7 +7,11 @@
template<int> struct A
{
int i;
- A() { if ((i = 0)) ; }
+ A()
+ {
+ if ((i = 0)) ;
+ if (i >>= 0) ;
+ }
};
A<0> a;
====================================================================
--
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=17120