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Fix __gnu_cxx::_Pointer_adapter for long long arithmetic 

* include/ext/pointer.h (_Pointer_adapter): Define operators for
	pointer arithmetic using long long offsets.
	* testsuite/ext/ext_pointer/1.cc: Test pointer arithmetic using
	long long values.

From-SVN: r263976
This commit is contained in:
Jonathan Wakely 2018-08-30 13:24:06 +01:00 committed by Jonathan Wakely
parent f7e1d19d58
commit 4a559e91b1
3 changed files with 25 additions and 0 deletions
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7
libstdc++-v3/ChangeLog
View File

@ -1,3 +1,10 @@
2018-08-30 Jonathan Wakely <jwakely@redhat.com>
* include/ext/pointer.h (_Pointer_adapter): Define operators for
pointer arithmetic using long long offsets.
* testsuite/ext/ext_pointer/1.cc: Test pointer arithmetic using
long long values.
2018-08-29 Jonathan Wakely <jwakely@redhat.com>
PR libstdc++/31413

4
libstdc++-v3/include/ext/pointer.h
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@ -441,6 +441,10 @@ _GLIBCXX_BEGIN_NAMESPACE_VERSION
_CXX_POINTER_ARITH_OPERATOR_SET(unsigned int);
_CXX_POINTER_ARITH_OPERATOR_SET(long);
_CXX_POINTER_ARITH_OPERATOR_SET(unsigned long);
#ifdef _GLIBCXX_USE_LONG_LONG
_CXX_POINTER_ARITH_OPERATOR_SET(long long);
_CXX_POINTER_ARITH_OPERATOR_SET(unsigned long long);
#endif
// Mathematical Manipulators
inline _Pointer_adapter&

14
libstdc++-v3/testsuite/ext/ext_pointer/1.cc
View File

@ -180,11 +180,25 @@ void test04() {
VERIFY(bPtr3 == aPtr);
}
// Check that long long values can be used for pointer arithmetic.
void test05()
{
A a[2] = { 1, 2 };
A_pointer p = a;
A_pointer q = p + 0ull;
VERIFY( p == q );
q += 0ll;
VERIFY( p == q );
q += 1ll;
VERIFY( q->i == p[1ll].i );
}
int main()
{
test01();
test02();
test03();
test04();
test05();
return 0;
}