// { dg-do compile }
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// { dg-do compile }
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// Copyright 2005 Free Software Foundation
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// Copyright 2005 Free Software Foundation
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// by Alexandre Oliva
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// by Alexandre Oliva
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// based on https://bugzilla.redhat.com/beta/show_bug.cgi?id=149098
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// based on https://bugzilla.redhat.com/beta/show_bug.cgi?id=149098
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// Per the ISO C++ 90 Standard, using declarations before of after a
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// Per the ISO C++ 90 Standard, using declarations before of after a
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// declaration of the same function name and prototype should be
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// declaration of the same function name and prototype should be
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// errors (7.3.3/11). However, DR 101's resolution recommends
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// errors (7.3.3/11). However, DR 101's resolution recommends
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// accepting such duplicates if they denote the same function, which
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// accepting such duplicates if they denote the same function, which
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// means extern "C" declarations are supposed to match and be
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// means extern "C" declarations are supposed to match and be
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// accepted.
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// accepted.
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// This test makes sure we reject or accept regular and using
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// This test makes sure we reject or accept regular and using
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// declarations regardless of order as appropriate, and that having
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// declarations regardless of order as appropriate, and that having
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// built-in declarations or overloads doesn't affet the outcome.
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// built-in declarations or overloads doesn't affet the outcome.
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namespace std {
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namespace std {
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extern "C" void exit (int) throw (); // these are built-in (extern "C")
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extern "C" void exit (int) throw (); // these are built-in (extern "C")
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extern "C" void *malloc (__SIZE_TYPE__) throw () __attribute__((malloc));
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extern "C" void *malloc (__SIZE_TYPE__) throw () __attribute__((malloc));
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void abort (void) throw (); // these aren't
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void abort (void) throw (); // these aren't
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void _exit (int) throw (); // { dg-error "std::_exit" }
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void _exit (int) throw (); // { dg-error "std::_exit" }
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extern "C" void c1 (void) throw ();
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extern "C" void c1 (void) throw ();
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void C1 (void) throw (); // { dg-error "std::C1" }
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void C1 (void) throw (); // { dg-error "std::C1" }
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extern "C" void c2 (void) throw ();
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extern "C" void c2 (void) throw ();
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void C2 (void) throw ();
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void C2 (void) throw ();
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extern "C" void c3 (void) throw ();
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extern "C" void c3 (void) throw ();
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void C3 (void) throw (); // { dg-error "std::C3" }
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void C3 (void) throw (); // { dg-error "std::C3" }
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}
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}
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namespace other {
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namespace other {
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extern "C" void c3 (void) throw ();
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extern "C" void c3 (void) throw ();
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void C3 (void) throw (); // { dg-error "other::C3" }
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void C3 (void) throw (); // { dg-error "other::C3" }
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}
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}
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using std::exit;
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using std::exit;
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using std::_exit;
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using std::_exit;
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using std::c1;
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using std::c1;
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using std::C1;
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using std::C1;
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extern "C" void exit (int) throw ();
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extern "C" void exit (int) throw ();
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extern "C" void *malloc (__SIZE_TYPE__) throw () __attribute__((malloc));
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extern "C" void *malloc (__SIZE_TYPE__) throw () __attribute__((malloc));
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void abort (void) throw ();
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void abort (void) throw ();
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void _exit (int) throw (); // { dg-error "conflicts|void _exit" }
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void _exit (int) throw (); // { dg-error "conflicts|void _exit" }
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extern "C" void c1 (void) throw ();
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extern "C" void c1 (void) throw ();
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void C1 (void) throw (); // { dg-error "conflicts|void C1" }
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void C1 (void) throw (); // { dg-error "conflicts|void C1" }
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extern "C" void c2 (void) throw ();
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extern "C" void c2 (void) throw ();
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void C2 (void) throw ();
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void C2 (void) throw ();
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int C3 (int) throw ();
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int C3 (int) throw ();
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using std::malloc;
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using std::malloc;
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using std::abort; // { dg-error "already declared" }
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using std::abort; // { dg-error "already declared" }
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using std::c2;
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using std::c2;
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using std::C2; // { dg-error "already declared" }
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using std::C2; // { dg-error "already declared" }
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using std::c3; using other::c3;
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using std::c3; using other::c3;
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using std::C3; using other::C3;
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using std::C3; using other::C3;
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long C3 (long) throw ();
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long C3 (long) throw ();
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int main () {
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int main () {
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malloc (0);
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malloc (0);
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exit (0);
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exit (0);
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_exit (0); // { dg-error "ambiguous" }
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_exit (0); // { dg-error "ambiguous" }
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abort ();
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abort ();
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c1 ();
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c1 ();
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C1 (); // { dg-error "ambiguous" }
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C1 (); // { dg-error "ambiguous" }
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c2 ();
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c2 ();
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C2 (); // one might expect an ambiguous call error here as well, but
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C2 (); // one might expect an ambiguous call error here as well, but
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// we don't add the using decl if we find it to be in error.
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// we don't add the using decl if we find it to be in error.
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c3 ();
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c3 ();
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C3 (); // { dg-error "ambiguous" }
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C3 (); // { dg-error "ambiguous" }
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C3 (0);
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C3 (0);
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C3 (0l);
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C3 (0l);
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}
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}
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