Segfault in HPHP::FixedStringMap

[mappu]

Hi, i have a segfault with a very similar stack trace to #404 :

(gdb) bt
#0  0x0000000000d7a2e4 in HPHP::FixedStringMap<unsigned int, true>::find(HPHP::StringData const*) const ()
#1  0x0000000000d4ea67 in HPHP::Class::getDeclPropIndex(HPHP::Class*, HPHP::StringData const*, bool&) const ()
#2  0x0000000000ae5491 in HPHP::ObjectData::setProp(HPHP::Class*, HPHP::StringData const*, HPHP::TypedValue*, bool) ()
#3  0x0000000000cbd9e2 in void HPHP::SetProp<true, false, (HPHP::KeyType)0>(HPHP::Class*, HPHP::TypedValue*, HPHP::TypedValue*, HPHP::TypedValue*) ()
#4  0x0000000000d2fb7e in void HPHP::VMExecutionContext::dispatchImpl<4>(int) ()
#5  0x0000000000cb3d2d in HPHP::VMExecutionContext::enterVM(HPHP::TypedValue*, HPHP::ActRec*) ()
#6  0x0000000000cb47f7 in HPHP::VMExecutionContext::invokeFunc(HPHP::TypedValue*, HPHP::Func const*, HPHP::Array const&, HPHP::ObjectData*, HPHP::Class*, HPHP::VarEnv*, HPHP::StringData*, HPHP::VMExecutionContext::InvokeFlags) ()
#7  0x0000000000cb5505 in HPHP::VMExecutionContext::invokeUnit(HPHP::TypedValue*, HPHP::Unit*) ()
#8  0x0000000000b36027 in HPHP::invoke_file(HPHP::String const&, bool, char const*) ()
#9  0x0000000000b37032 in HPHP::include_impl_invoke(HPHP::String const&, bool, char const*) ()
#10 0x0000000000b29b69 in HPHP::hphp_invoke(HPHP::ExecutionContext*, std::string const&, bool, HPHP::Array const&, HPHP::VRefParamValue const&, std::string const&, std::string const&, bool&, std::string&, bool, bool, bool) ()
#11 0x0000000000c85b40 in HPHP::HttpRequestHandler::executePHPRequest(HPHP::Transport*, HPHP::RequestURI&, HPHP::SourceRootInfo&, bool) ()
#12 0x0000000000c87304 in HPHP::HttpRequestHandler::handleRequest(HPHP::Transport*) ()
#13 0x0000000000fab568 in HPHP::LibEventWorker::doJobImpl(boost::shared_ptr<HPHP::LibEventJob>, bool) ()
#14 0x0000000000fab7da in HPHP::LibEventWorker::doJob(boost::shared_ptr<HPHP::LibEventJob>) ()
#15 0x0000000000fa8d38 in HPHP::JobQueueWorker<boost::shared_ptr<HPHP::LibEventJob>, true, false, HPHP::JobQueueDropVMStack>::start() ()
#16 0x0000000000ea7917 in HPHP::AsyncFuncImpl::threadFuncImpl() ()
#17 0x0000000000ea7ab0 in HPHP::AsyncFuncImpl::ThreadFunc(void*) ()
#18 0x00007ffff2bdfe0e in start_thread () from /lib/x86_64-linux-gnu/libpthread.so.0
#19 0x00007ffff0cb995d in clone () from /lib/x86_64-linux-gnu/libc.so.6

I'm using the binary from the "unofficial packages for Debian 7" github wiki page, so apologies if this has already been fixed:

# hhvm --version
HipHop VM v2.1.0-dev (rel)
Compiler: heads/master-0-g67aae187565a8f9e36afba6d54a0acfc48434193
Repo schema: c28428f6376c681bceb4bbb4984ba0533666bbd9

I'll see if i can get a minimal PHP sample to reproduce..

[mappu]

Duplicate of #990 as per #1012