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Allow cstringmap to contain strings with nul characters in them.

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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@34062 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Chris Lattner
2007-02-08 19:08:37 +00:00
parent 98a030c468
commit ee182422ff
4 changed files with 124 additions and 64 deletions
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lib/Support/CStringMap.cpp
+5 -4
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@@ -58,7 +58,7 @@ unsigned CStringMapImpl::LookupBucketFor(const char *NameStart,
unsigned ProbeAmt = 1;
while (1) {
ItemBucket &Bucket = TheTable[BucketNo];
void *BucketItem = Bucket.Item;
StringMapEntryBase *BucketItem = Bucket.Item;
// If we found an empty bucket, this key isn't in the table yet, return it.
if (BucketItem == 0) {
Bucket.FullHashValue = FullHashValue;
@@ -73,8 +73,9 @@ unsigned CStringMapImpl::LookupBucketFor(const char *NameStart,
// Do the comparison like this because NameStart isn't necessarily
// null-terminated!
char *ItemStr = (char*)BucketItem+ItemSize;
if (strlen(ItemStr) == unsigned(NameEnd-NameStart) &&
memcmp(ItemStr, NameStart, (NameEnd-NameStart)) == 0) {
unsigned ItemStrLen = BucketItem->getKeyLength();
if (unsigned(NameEnd-NameStart) == ItemStrLen &&
memcmp(ItemStr, NameStart, ItemStrLen) == 0) {
// We found a match!
return BucketNo;
}
@@ -131,7 +132,7 @@ void CStringMapImpl::RehashTable() {
/// invoking Visitor.Visit for each of them.
void CStringMapImpl::VisitEntries(const CStringMapVisitor &Visitor) const {
for (ItemBucket *IB = TheTable, *E = TheTable+NumBuckets; IB != E; ++IB) {
if (void *Id = IB->Item)
if (StringMapEntryBase *Id = IB->Item)
Visitor.Visit((char*)Id + ItemSize, Id);
}
}