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From: "jan.kratochvil at redhat dot com" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug c++/57709] New: -Wshadow is too strict / has false positives
Date: Tue, 25 Jun 2013 13:52:00 -0000 [thread overview]
Message-ID: <bug-57709-4@http.gcc.gnu.org/bugzilla/> (raw)
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=57709
Bug ID: 57709
Summary: -Wshadow is too strict / has false positives
Product: gcc
Version: 4.9.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: c++
Assignee: unassigned at gcc dot gnu.org
Reporter: jan.kratochvil at redhat dot com
Target: x86_64-unknown-linux-gnu
class C {
int both_var;
void var_and_method() {}
void m() { int both_var, var_and_method; }
};
FAIL: gcc (GCC) 4.8.2 20130625 (prerelease)
FAIL: gcc (GCC) 4.9.0 20130625 (experimental)
g++ -c -o shadow.o shadow.C -Wshadow -Wno-unused
shadow.C:4:18: warning: declaration of ‘both_var’ shadows a member of 'this'
[-Wshadow]
shadow.C:4:28: warning: declaration of ‘var_and_method’ shadows a member of
'this' [-Wshadow]
clang-3.3-0.4.rc2.fc18.x86_64
clang -c -o shadow.o shadow.C -Wshadow -Wno-unused
shadow.C:4:18: warning: declaration shadows a field of 'C' [-Wshadow]
void m() { int both_var, var_and_method; }
^
shadow.C:2:7: note: previous declaration is here
int both_var;
^
1 warning generated.
------------------------------------------------------------------------------
clang does no warn on "var_and_method" as variable vs. method are safe, if one
tries to use them inappropriately one gets an error.
It is difficult to enable -Wshadow for existing project as it has many needless
warnings, with clang it is easier and still safe.
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From: "schwab@linux-m68k.org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug c/57707] gcc misinterprets hex escapes in constant strings
Date: Tue, 25 Jun 2013 14:01:00 -0000
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X-Bugzilla-Product: gcc
X-Bugzilla-Component: c
X-Bugzilla-Version: 4.7.1
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X-Bugzilla-Status: RESOLVED
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Message-ID: <bug-57707-4-hz3sgmWPCE@http.gcc.gnu.org/bugzilla/>
In-Reply-To: <bug-57707-4@http.gcc.gnu.org/bugzilla/>
References: <bug-57707-4@http.gcc.gnu.org/bugzilla/>
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http://gcc.gnu.org/bugzilla/show_bug.cgi?idW707
Andreas Schwab <schwab@linux-m68k.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|UNCONFIRMED |RESOLVED
Resolution|--- |INVALID
--- Comment #4 from Andreas Schwab <schwab@linux-m68k.org> ---
6.4.4.4
Bugzilla is not the right place to learn C.
next reply other threads:[~2013-06-25 13:52 UTC|newest]
Thread overview: 15+ messages / expand[flat|nested] mbox.gz Atom feed top
2013-06-25 13:52 jan.kratochvil at redhat dot com [this message]
2013-06-25 15:52 ` [Bug c++/57709] " pinskia at gcc dot gnu.org
2013-06-25 16:17 ` jakub at gcc dot gnu.org
2013-06-25 16:40 ` jan.kratochvil at redhat dot com
2013-06-25 16:46 ` manu at gcc dot gnu.org
2013-06-25 18:00 ` manu at gcc dot gnu.org
2013-11-19 6:31 ` manu at gcc dot gnu.org
2013-11-19 13:40 ` jan.kratochvil at redhat dot com
2013-11-19 16:49 ` manu at gcc dot gnu.org
2013-11-19 17:15 ` jan.kratochvil at redhat dot com
2013-12-14 7:57 ` jan.kratochvil at redhat dot com
2013-12-17 22:35 ` joseph at codesourcery dot com
2014-08-22 19:13 ` manu at gcc dot gnu.org
2015-06-09 9:33 ` gael.guennebaud at gmail dot com
2015-06-09 9:47 ` manu at gcc dot gnu.org
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