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Backport GCPRO fix from trunk.

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The bug was reported for AIX before today's changes.
I reproduced the problem on Fedora 17 x86-64 when setting
GC_MARK_STACK by hand, and I presume it occurs with default
configurations on HP-UX and Unixware.
Trunk fix on 2013-01-14 by Dmitry Antipov <dmantipov@yandex.ru>:
Fix compilation with GC_MARK_STACK == GC_USE_GCPROS_AS_BEFORE.
* eval.c (eval_sub): Protect `form' from being GCed before its
car and cdr becomes protected with the backtrace entry.

Fixes: debbugs:13650
This commit is contained in:
Paul Eggert 2013-02-14 14:08:38 -08:00
parent 35b3a27e67
commit 974c7646ec
2 changed files with 13 additions and 0 deletions
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10
src/ChangeLog
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@ -1,5 +1,15 @@
2013-02-14 Paul Eggert <eggert@cs.ucla.edu>
Backport GCPRO fix from trunk (Bug#13650).
The bug was reported for AIX before today's changes.
I reproduced the problem on Fedora 17 x86-64 when setting
GC_MARK_STACK by hand, and I presume it occurs with default
configurations on HP-UX and Unixware.
Trunk fix on 2013-01-14 by Dmitry Antipov <dmantipov@yandex.ru>:
Fix compilation with GC_MARK_STACK == GC_USE_GCPROS_AS_BEFORE.
* eval.c (eval_sub): Protect `form' from being GCed before its
car and cdr becomes protected with the backtrace entry.
Fix AIX port (Bug#13650).
* lisp.h (XPNTR) [!USE_LSB_TAG && DATA_SEG_BITS]:
Fix bug introduced in 2012-07-27 change. DATA_SEG_BITS, if set,

3
src/eval.c
View file

@ -2034,7 +2034,10 @@ eval_sub (Lisp_Object form)
return form;
QUIT;
GCPRO1 (form);
maybe_gc ();
UNGCPRO;
if (++lisp_eval_depth > max_lisp_eval_depth)
{