For debugging purposes, I have been using the following:
struct trbuf { void* pc; int value; } trbuf[256];
unsigned char trptr;
#define RECORD_INPUT do { __label__ woozle; \
woozle: trbuf[trptr++] = (struct trbuf) \
{ &&woozle, interrupt_input_blocked}; } while(0)
And then whereever I change interrupt_input_blocked, I also call
RECORD_INPUT. This causes Emacs to crash in unrelated spaces. I have
crosschecked the compiled code, and it does the correct thing: no data
type overflow problems or something.
So it is obvious that the problem is elsewhere, likely that the data
structures I use above confuse the garbage collector. What kind of
data structures are allowed, and how can I hide data structures that
would confuse it from the garbarge collector?
--
David Kastrup, Kriemhildstr. 15, 44793 Bochum
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