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Changes to turn on nsCOMPtr leak logging on autoconf based platforms. r=waterson@netscape.com

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dbaron%fas.harvard.edu 2000-06-15 02:13:07 +00:00
parent 0cdd9b7edc
commit 87a5d6a6d7
1 changed files with 24 additions and 0 deletions
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24
configure.in
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@ -2559,6 +2559,30 @@ if test "$ac_cv_cpp_reinterpret_cast" = yes ; then
AC_DEFINE(HAVE_CPP_NEW_CASTS)
fi
dnl See if a dynamic_cast to void* gives the most derived object.
AC_CACHE_CHECK(for C++ dynamic_cast to void*,
ac_cv_cpp_dynamic_cast_void_ptr,
[AC_TRY_RUN([class X { int i; public: virtual ~X() { } };
class Y { int j; public: virtual ~Y() { } };
class Z : public X, public Y { int k; };
int main() {
Z mdo;
X *subx = (X*)&mdo;
Y *suby = (Y*)&mdo;
return !((((void*)&mdo != (void*)subx) &&
((void*)&mdo == dynamic_cast<void*>(subx))) ||
(((void*)&mdo != (void*)suby) &&
((void*)&mdo == dynamic_cast<void*>(suby))));
}],
ac_cv_cpp_dynamic_cast_void_ptr=yes,
ac_cv_cpp_dynamic_cast_void_ptr=no,
ac_cv_cpp_dynamic_cast_void_ptr=no)])
if test "$ac_cv_cpp_dynamic_cast_void_ptr" = yes ; then
AC_DEFINE(HAVE_CPP_DYNAMIC_CAST_TO_VOID_PTR)
fi
dnl note that this one is reversed - if the test fails, then
dnl we require implementations of unused virtual methods. Which
dnl really blows because it means we'll have useless vtable