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-rw-r--r--src/s/irix6-5.h4
1 files changed, 4 insertions, 0 deletions
diff --git a/src/s/irix6-5.h b/src/s/irix6-5.h
index c1cc42a8c0..9df3e0a2ef 100644
--- a/src/s/irix6-5.h
+++ b/src/s/irix6-5.h
@@ -33,5 +33,9 @@
#undef TIOCSIGSEND /* defined in usg5-4.h */
+/* Tested on Irix 6.5. SCM worked on earlier versions. */
+#define GC_SETJMP_WORKS 1
+#define GC_MARK_STACK GC_MAKE_GCPROS_NOOPS
+
/* arch-tag: d7ad9ec2-54ad-4b2f-adf2-0070c5c63e83
(do not change this comment) */