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Fix SmallVector's insert to handle non-random-access iterators.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@99633 91177308-0d34-0410-b5e6-96231b3b80d8
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@ -239,11 +239,20 @@ public:
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/// starting with "Dest", constructing elements into it as needed.
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template<typename It1, typename It2>
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static void uninitialized_copy(It1 I, It1 E, It2 Dest) {
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// Use memcpy for PODs: std::uninitialized_copy optimizes to memmove, memcpy
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// is better.
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memcpy(&*Dest, &*I, (E-I)*sizeof(T));
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// Arbitrary iterator types; just use the basic implementation.
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std::uninitialized_copy(I, E, Dest);
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}
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/// uninitialized_copy - Copy the range [I, E) onto the uninitialized memory
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/// starting with "Dest", constructing elements into it as needed.
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template<typename T1, typename T2>
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static void uninitialized_copy(T1 *I, T1 *E, T2 *Dest) {
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// Use memcpy for PODs iterated by pointers (which includes SmallVector
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// iterators): std::uninitialized_copy optimizes to memmove, but we can
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// use memcpy here.
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memcpy(Dest, I, (E-I)*sizeof(T));
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}
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/// grow - double the size of the allocated memory, guaranteeing space for at
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/// least one more element or MinSize if specified.
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void grow(size_t MinSize = 0) {
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@ -501,10 +510,13 @@ public:
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this->uninitialized_copy(I, OldEnd, this->end()-NumOverwritten);
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// Replace the overwritten part.
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std::copy(From, From+NumOverwritten, I);
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for (; NumOverwritten > 0; --NumOverwritten) {
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*I = *From;
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++I; ++From;
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}
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// Insert the non-overwritten middle part.
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this->uninitialized_copy(From+NumOverwritten, To, OldEnd);
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this->uninitialized_copy(From, To, OldEnd);
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return I;
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}
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@ -14,6 +14,7 @@
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#include "gtest/gtest.h"
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#include "llvm/ADT/SmallVector.h"
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#include <stdarg.h>
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#include <list>
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using namespace llvm;
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@ -399,4 +400,9 @@ TEST_F(SmallVectorTest, DirectVectorTest) {
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EXPECT_EQ(4, theVector[3].getValue());
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}
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TEST_F(SmallVectorTest, IteratorTest) {
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std::list<int> L;
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theVector.insert(theVector.end(), L.begin(), L.end());
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}
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}
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