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-rw-r--r--libguile/promises.c4
1 files changed, 2 insertions, 2 deletions
diff --git a/libguile/promises.c b/libguile/promises.c
index 4aff15092..57a208104 100644
--- a/libguile/promises.c
+++ b/libguile/promises.c
@@ -88,11 +88,11 @@ static int
promise_print (SCM exp, SCM port, scm_print_state *pstate)
{
int writingp = SCM_WRITINGP (pstate);
- scm_puts ("#<promise ", port);
+ scm_puts_unlocked ("#<promise ", port);
SCM_SET_WRITINGP (pstate, 1);
scm_iprin1 (SCM_PROMISE_DATA (exp), port, pstate);
SCM_SET_WRITINGP (pstate, writingp);
- scm_putc ('>', port);
+ scm_putc_unlocked ('>', port);
return !0;
}