[DynInst_API:] [dyninst/dyninst] 47d96e: Fix synchronization error in new symtab implementa...

[Bolo -- Josef Burger <noreply@xxxxxxxxxx>]

  Branch: refs/heads/bolo/symtab_locking
  Home:   https://github.com/dyninst/dyninst
  Commit: 47d96efba4862438a452a1df511a7d7e5073c637
      https://github.com/dyninst/dyninst/commit/47d96efba4862438a452a1df511a7d7e5073c637
  Author: Bolo <bolo@xxxxxxxxxxx>
  Date:   2023-12-13 (Wed, 13 Dec 2023)

  Changed paths:
    M symtabAPI/src/Symtab-lookup.C
    M symtabAPI/src/Symtab.C
    M symtabAPI/src/symtab_impl.hpp

  Log Message:
  -----------
  Fix synchronization error in new symtab implementation.

Use a file level static for the parallelism once_flag-s
to prevent threaded initialization race condition.