[Bug c++/70824] New: cc1plus consumes all available memory on specific template code

[trulsjo at gmail dot com]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=70824

            Bug ID: 70824
           Summary: cc1plus consumes all available memory on specific
                    template code
           Product: gcc
           Version: 6.1.0
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: c++
          Assignee: unassigned at gcc dot gnu.org
          Reporter: trulsjo at gmail dot com
  Target Milestone: ---

Created attachment 38348
  --> https://gcc.gnu.org/bugzilla/attachment.cgi?id=38348&action=edit
Prerocessed source for failed compile

Compiling this code with g++ 6.1.0 causes cc1plus to consume all available
memory (or at least more than 12GB):

#include <algorithm>

template <class Src>
size_t 
a() {
  const int v = std::max({1});
  return v;
}

Compiled with
g++ TJOTest.cpp -c --save-temps

gcc version is 6.1.0 release, compiled on Ubuntu 16.04 system with ./configure
&& make && make install

The same code compiles successfully on stock compiler in Ubuntu 16.04 (g++
5.3.1-14ubuntu2) 5.3.1 20160413