bug#36597: 27.0.50; rehash hash tables eagerly in pdumper

[Paul Eggert]

Pip Cet wrote:
> I'm currently playing around with redefining hash tables not to have
> internal freelists. That makes the hash table code a lot simpler
> overall, but some of that simplicity would be lost trying to support
> lazy hash table rehashing.

While looking into this I discovered unlikely bugs in Emacs's hash table code 
and GC that can make Emacs dump core, along with some other unlikely hash-table 
bugs that can cause Emacs to report memory exhaustion when there should be 
plenty of memory. I installed the attached patches to fix these problems and to 
refactor to make this code easier to understand (at least for me :-). These 
patches will probably affect performance analysis.

0001-Fix-hash-table-overallocation-etc.patch
Description: Text Data

0002-Rename-pure-to-purecopy.patch
Description: Text Data

0003-Simplify-maybe_gc-implementation.patch
Description: Text Data

0004-Inhibit-GC-after-inhibit_garbage_collection.patch
Description: Text Data

0005-Simplify-hashfn-cmpfn-calling-convention.patch
Description: Text Data

0006-Fix-crash-if-user-test-munges-hash-table.patch
Description: Text Data