1
0
mirror of https://github.com/Interlisp/maiko.git synced 2026-01-24 03:07:12 +00:00
Nick Briggs 12c5f3231e Correct handling of return value of N_OP_unwind()
The return value of N_OP_unwind is really of type LispPTR *, however it was
declared as UNSIGNED (effectively uintptr_t) so that the ERROR_EXIT macro
could be used to return an error indication (-1, =UINT_MAX). The call site
checked for the error condition with (int)result < 0, not accounting for the
case where a native pointer may have the high-order bit set.

We correct this problem by declaring the return type as LispPTR *,
and expand the ERROR_EXIT macro in place substituting (LispPTR *)(-1)
as the error return value, and at the single call site check for equality
with that same value.

The test case was executing the opcode tester on a Raspberry Pi or
a BeagleBone Black/Debian 10.3 where the non-error result was > 0xB0000000

  	modified:   inc/inlineC.h
        modified:   inc/unwinddefs.h
        modified:   src/unwind.c
2021-01-01 14:08:41 -08:00
..
2020-12-10 08:07:35 -08:00
2020-12-10 08:07:35 -08:00
2020-12-10 08:07:35 -08:00
2020-09-04 16:27:23 -07:00
2020-12-10 08:07:35 -08:00
2020-12-10 08:07:35 -08:00
2020-12-28 10:10:43 -08:00
2020-12-10 08:07:35 -08:00
2020-12-31 10:29:19 -08:00
2020-12-31 10:29:19 -08:00
2020-12-10 08:07:35 -08:00
2020-12-10 08:07:35 -08:00
2020-12-10 08:07:35 -08:00
2020-12-10 08:07:35 -08:00
2020-12-10 08:07:35 -08:00
2020-12-13 05:35:53 +00:00
2020-12-13 05:35:53 +00:00
2020-12-10 08:07:35 -08:00
2020-08-11 18:45:09 -07:00
2020-12-22 23:23:26 -08:00
2020-12-10 08:07:35 -08:00
2020-12-10 08:07:35 -08:00
2020-12-10 08:07:35 -08:00
2020-12-10 08:07:35 -08:00
2020-12-10 08:07:35 -08:00
2020-12-10 08:07:35 -08:00
2020-12-07 11:03:05 -08:00
2020-12-10 08:07:35 -08:00
2020-12-22 17:34:10 +00:00
2020-12-21 18:09:14 +00:00