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From: pthomas@suse.de To: gcc-gnats@gcc.gnu.org Cc: aj@suse.de Subject: c++/6307: gcc looses const qualifier, thus rejecting valid code. Date: Mon, 15 Apr 2002 07:16:00 -0000 [thread overview] Message-ID: <20020415140942.16963.qmail@sources.redhat.com> (raw) >Number: 6307 >Category: c++ >Synopsis: gcc looses const qualifier, thus rejecting valid code. >Confidential: no >Severity: critical >Priority: medium >Responsible: unassigned >State: open >Class: rejects-legal >Submitter-Id: net >Arrival-Date: Mon Apr 15 07:16:01 PDT 2002 >Closed-Date: >Last-Modified: >Originator: Philipp Thomas, SuSE Linux Ag >Release: 3.1 20020408 (prerelease) >Organization: >Environment: i486-suse-linux >Description: When compiling the attached test case, gcc fails with gcc31_bug_const.cc: In member function `int Collision::automatic_shift()': gcc31_bug_const.cc:38: invalid conversion from `int (*)(int* const&, int* const&)' to `int (*)(int*&, int*&)' gcc31_bug_const.cc:38: initializing argument 1 of `void Link_array<T>::sort(int (*)(T*&, T*&), int, int) [with T = int]' gcc31_bug_const.cc: In member function `void Link_array<T>::sort(int (*)(T*&, T*&), int, int) [with T = int]': gcc31_bug_const.cc:38: instantiated from here gcc31_bug_const.cc:29: invalid conversion from `int (*)(int* const&, int* const&)' to `int (*)(int*&, int*&)' gcc31_bug_const.cc:29: initializing argument 1 of `void Link_array<T>::sort(int (*)(T*&, T*&), int, int) [with T = int]' AFAICS, this is valid code and gcc looses the const somewhere. >How-To-Repeat: Compile attached file with c++. >Fix: >Release-Note: >Audit-Trail: >Unformatted: ----gnatsweb-attachment---- Content-Type: text/plain; name="gcc31_bug_const.cc" Content-Disposition: inline; filename="gcc31_bug_const.cc" template<class T> class Link_array { public: Link_array () {} Link_array (Link_array<T> const &src) {} // quicksort. void sort (int (*compare) (T *const&,T *const&), int lower = -1, int upper = -1); }; class Note_column { public: static int shift_compare (int *const &, int *const &) {}; }; class Collision // interface { public: int automatic_shift (); }; template<class T> void Link_array<T>::sort (int (*compare) (T *const&,T *const&), int lower, int upper) { int last = lower; sort (compare, lower, last-1); } int Collision::automatic_shift () { int d = 1; Link_array<int> clashes; clashes.sort (Note_column::shift_compare); return 1; } int main() { return 0; }
next reply other threads:[~2002-04-15 14:16 UTC|newest] Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top 2002-04-15 7:16 pthomas [this message] 2002-04-17 2:52 pthomas
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