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Fix the IntegersSubsetTest unit test when compiled with gcc-4.7. The issue here

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is that the unit test doesn't have IntTy equal to APInt, instead it uses a class
derived from APInt.  When, as in these lines, an IntTy& reference is returned
but is assigned to an APInt&, the compiler destroys the temporary the IntTy& was
referring to, leaving the APInt& referring to garbage.  This causes the unittest
to fail systematically on my machine; it can also be caught by running the test
under valgrind.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@167356 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Duncan Sands 2012-11-03 14:04:04 +00:00
parent c5b969a019
commit 2578c123f0
1 changed files with 4 additions and 4 deletions
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8
include/llvm/Support/IntegersSubset.h
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@ -411,8 +411,8 @@ public:
unsigned getSize() const {
APInt sz(((const APInt&)getItem(0).getLow()).getBitWidth(), 0);
for (unsigned i = 0, e = getNumItems(); i != e; ++i) {
const APInt &Low = getItem(i).getLow();
const APInt &High = getItem(i).getHigh();
const APInt Low = getItem(i).getLow();
const APInt High = getItem(i).getHigh();
APInt S = High - Low + 1;
sz += S;
}
@ -426,8 +426,8 @@ public:
APInt getSingleValue(unsigned idx) const {
APInt sz(((const APInt&)getItem(0).getLow()).getBitWidth(), 0);
for (unsigned i = 0, e = getNumItems(); i != e; ++i) {
const APInt &Low = getItem(i).getLow();
const APInt &High = getItem(i).getHigh();
const APInt Low = getItem(i).getLow();
const APInt High = getItem(i).getHigh();
APInt S = High - Low + 1;
APInt oldSz = sz;
sz += S;