[Bug c++/110746] New: gcc-12 fails: sorry, unimplemented: PCH allocation failure

[yuri at tsoft dot com via Gcc-bugs]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=110746

            Bug ID: 110746
           Summary: gcc-12 fails: sorry, unimplemented: PCH allocation
                    failure
           Product: gcc
           Version: unknown
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: c++
          Assignee: unassigned at gcc dot gnu.org
          Reporter: yuri at tsoft dot com
  Target Milestone: ---

> <command-line>: sorry, unimplemented: PCH allocation failure

This message is in the GCC source code.

What does this mean "PCH allocation failure"? What is wrong?