Nick Briggs 98a8d8be49 Add diagnostics for odd-sized stack free blocks and guard blocks, silence alignment upgrade warnings ...

Creating a free block or guard block on the stack with an odd number of 16-bit words
  will cause the system to break badly.  Always check that and report an error.

  Because the stack pointer is declared as "DLword *" (16-bit) for pointer arithmetic,
  although it is always maintained as a pointer to a 32-bit boundary, the compiler generates
  spurious warnings on casting the stack pointer to structures that require 32-bit alignment.
  Silence those warnings by casting through (void *).

2023-02-17 17:01:27 -08:00

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