StringImpl* StringImpl::empty16Bit() {
DEFINE_STATIC_LOCAL(StringImpl, emptyString, (ConstructEmptyString16Bit));
WTF_ANNOTATE_BENIGN_RACE(&emptyString,
"Benign race on the reference counter of a static "
"string created by StringImpl::empty16Bit");
return &emptyString;
}
StringImpl* StringImpl::empty()
{
// FIXME: This works around a bug in our port of PCRE, that a regular expression
// run on the empty string may still perform a read from the first element, and
// as such we need this to be a valid pointer. No code should ever be reading
// from a zero length string, so this should be able to be a non-null pointer
// into the zero-page.
// Replace this with 'reinterpret_cast<UChar*>(static_cast<intptr_t>(1))' once
// PCRE goes away.
static LChar emptyLCharData = 0;
DEFINE_STATIC_LOCAL(StringImpl, emptyString, (&emptyLCharData, 0, ConstructStaticString));
WTF_ANNOTATE_BENIGN_RACE(&emptyString, "Benign race on StringImpl::emptyString reference counter");
return &emptyString;
}
StringImpl* StringImpl::empty()
{
DEFINE_STATIC_LOCAL(StringImpl, emptyString, (ConstructEmptyString));
WTF_ANNOTATE_BENIGN_RACE(&emptyString, "Benign race on StringImpl::emptyString reference counter");
return &emptyString;
}
