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Check whether the iterator p == the end iterator before trying to dereference it. This is a speculative fix for a failure found on the valgrind buildbot triggered by a clang test.

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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@217295 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Nick Lewycky 2014-09-06 01:16:42 +00:00
parent 14b2112e24
commit 05ad06754c
1 changed files with 3 additions and 3 deletions
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6
lib/Support/APFloat.cpp
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@ -212,15 +212,15 @@ skipLeadingZeroesAndAnyDot(StringRef::iterator begin, StringRef::iterator end,
{
StringRef::iterator p = begin;
*dot = end;
while (*p == '0' && p != end)
while (p != end && *p == '0')
p++;
if (*p == '.') {
if (p != end && *p == '.') {
*dot = p++;
assert(end - begin != 1 && "Significand has no digits");
while (*p == '0' && p != end)
while (p != end && *p == '0')
p++;
}