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-rw-r--r--src/s/unixware.h4
1 files changed, 4 insertions, 0 deletions
diff --git a/src/s/unixware.h b/src/s/unixware.h
index 22c396a060..63c36ee40c 100644
--- a/src/s/unixware.h
+++ b/src/s/unixware.h
@@ -50,3 +50,7 @@ along with GNU Emacs. If not, see <http://www.gnu.org/licenses/>. */
}
#define PENDING_OUTPUT_COUNT(FILE) ((FILE)->__ptr - (FILE)->__base)
+
+/* Conservative garbage collection has not been tested, so for now
+ play it safe and stick with the old-fashioned way of marking. */
+#define GC_MARK_STACK GC_USE_GCPROS_AS_BEFORE