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QVector: Avoid implicit conversion warnings 

This fixes compiling an application using QVector and -Wshorten-64-to-32
on a 64-bit system without getting this warning:

 ... 5.8/clang_64/lib/QtCore.framework/Headers/qvector.h:695:18:
 warning: implicit conversion loses integer precision: 'typename
 iterator_traits<QString *>::difference_type' (aka 'long') to 'int'
 [-Wshorten-64-to-32]
    int offset = std::distance(d->begin(), before);
        ~~~~~~   ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

 ... 5.8/clang_64/lib/QtCore.framework/Headers/qvector.h:731:35:
 warning: implicit conversion loses integer precision: 'long' to
 'const int' [-Wshorten-64-to-32]
    const int itemsToErase = aend - abegin;
              ~~~~~~~~~~~~   ~~~~~^~~~~~~~

 ... 5.8/clang_64/lib/QtCore.framework/Headers/qvector.h:740:39:
 warning: implicit conversion loses integer precision: 'long' to
 'const int' [-Wshorten-64-to-32]
    const int itemsUntouched = abegin - d->begin();
              ~~~~~~~~~~~~~~   ~~~~~~~^~~~~~~~~~~~

Change-Id: I52d85908f4aac20c7e9ac8063ac760ce52f85541
Reviewed-by: Marc Mutz <marc.mutz@kdab.com>
Reviewed-by: Thiago Macieira <thiago.macieira@intel.com>
bb10
Stig Bjørlykke 2017-02-28 09:42:08 +01:00 committed by Marc Mutz
parent 2b13ba0ca0
commit 62e6aa6195
1 changed files with 4 additions and 4 deletions
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8
src/corelib/tools/qvector.h
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@ -692,7 +692,7 @@ typename QVector<T>::iterator QVector<T>::insert(iterator before, size_type n, c
{
Q_ASSERT_X(isValidIterator(before), "QVector::insert", "The specified iterator argument 'before' is invalid");
int offset = std::distance(d->begin(), before);
const auto offset = std::distance(d->begin(), before);
if (n != 0) {
const T copy(t);
if (!isDetached() || d->size + n > int(d->alloc))
@ -728,7 +728,7 @@ typename QVector<T>::iterator QVector<T>::erase(iterator abegin, iterator aend)
Q_ASSERT_X(isValidIterator(abegin), "QVector::erase", "The specified iterator argument 'abegin' is invalid");
Q_ASSERT_X(isValidIterator(aend), "QVector::erase", "The specified iterator argument 'aend' is invalid");
const int itemsToErase = aend - abegin;
const auto itemsToErase = aend - abegin;
if (!itemsToErase)
return abegin;
@ -737,7 +737,7 @@ typename QVector<T>::iterator QVector<T>::erase(iterator abegin, iterator aend)
Q_ASSERT(aend <= d->end());
Q_ASSERT(abegin <= aend);
const int itemsUntouched = abegin - d->begin();
const auto itemsUntouched = abegin - d->begin();
// FIXME we could do a proper realloc, which copy constructs only needed data.
// FIXME we are about to delete data - maybe it is good time to shrink?
@ -766,7 +766,7 @@ typename QVector<T>::iterator QVector<T>::erase(iterator abegin, iterator aend)
memmove(static_cast<void *>(abegin), static_cast<void *>(aend),
(d->size - itemsToErase - itemsUntouched) * sizeof(T));
}
d->size -= itemsToErase;
d->size -= int(itemsToErase);
}
return d->begin() + itemsUntouched;
}