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Bug 556303: Fix unsigned/signed compiler warning in nsTArray.cpp. r=bsmedberg

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This commit is contained in:
Daniel Holbert 2010-04-05 14:56:35 -07:00
parent 477089a2f0
commit 29ca6922d5
1 changed files with 3 additions and 1 deletions
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4
xpcom/glue/nsTArray.cpp
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@ -85,7 +85,9 @@ nsTArray_base::EnsureCapacity(size_type capacity, size_type elemSize) {
}
// Use doubling algorithm when forced to increase available capacity.
capacity = PR_MAX(capacity, mHdr->mCapacity << 1);
// (Note that mCapacity is only 31 bits wide, so multiplication promotes its
// type. We use |2u| instead of |2| to make sure it's promoted to unsigned.)
capacity = PR_MAX(capacity, mHdr->mCapacity * 2u);
Header *header;
if (UsesAutoArrayBuffer()) {