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From: "gael.guennebaud at gmail dot com" <gcc-bugzilla@gcc.gnu.org> To: gcc-bugs@gcc.gnu.org Subject: [Bug c++/66472] New: -Wshadow gets confused by using statements in template classes Date: Tue, 09 Jun 2015 11:25:00 -0000 [thread overview] Message-ID: <bug-66472-4@http.gcc.gnu.org/bugzilla/> (raw) https://gcc.gnu.org/bugzilla/show_bug.cgi?id=66472 Bug ID: 66472 Summary: -Wshadow gets confused by using statements in template classes Product: gcc Version: 5.1.0 Status: UNCONFIRMED Severity: normal Priority: P3 Component: c++ Assignee: unassigned at gcc dot gnu.org Reporter: gael.guennebaud at gmail dot com Target Milestone: --- This is a followup to bug 57709 that disabled shadow warnings between variables and class functions. However, -Wshadow still trigger false positive when a base member functions is imported with the "using" keyword, as in the following example (tested with gcc 5.1): template<typename T> struct BaseClass { BaseClass(int size) : m_size(size) {} int size() { return m_size; } int m_size; }; template<typename T> struct Foo : BaseClass<T> { typedef BaseClass<T> Base; Foo(int size) : Base(size) {} using Base::size; }; $ g++-mp-5 gcc_shadow.cpp -c -Wshadow gcc_shadow.cpp: In constructor 'Foo<T>::Foo(int)': gcc_shadow.cpp:9:17: warning: declaration of 'size' shadows a member of 'Foo<T>' [-Wshadow] Foo(int size) : Base(size) {} ^ gcc_shadow.cpp:10:15: note: shadowed declaration is here using Base::size; Note that clang does not warn in this case, so it should be possible to figure out that in this case, the imported "size" symbol is a function and not a variable. As suggested there https://gcc.gnu.org/bugzilla/show_bug.cgi?id=57709#c16, I tried to break at the call to warning_at to give you more input, but with no luck, as if warning_at was not called at all. (I also tried to break at any *warning* symbol with same result).
next reply other threads:[~2015-06-09 11:25 UTC|newest] Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top 2015-06-09 11:25 gael.guennebaud at gmail dot com [this message] 2015-06-09 12:39 ` [Bug c++/66472] " chtz at informatik dot uni-bremen.de 2015-06-09 12:54 ` gael.guennebaud at gmail dot com 2015-06-09 13:07 ` glisse at gcc dot gnu.org 2015-06-09 13:11 ` manu at gcc dot gnu.org 2021-12-25 1:43 ` pinskia at gcc dot gnu.org
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