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-rw-r--r--byterun/debugger.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/byterun/debugger.c b/byterun/debugger.c
index 210cc1c90..d5b25fb3a 100644
--- a/byterun/debugger.c
+++ b/byterun/debugger.c
@@ -149,7 +149,7 @@ static void safe_output_value(struct channel *chan, value val)
/* Catch exceptions raised by output_val */
saved_external_raise = external_raise;
- if (sigsetjmp(raise_buf.buf, 1) == 0) {
+ if (sigsetjmp(raise_buf.buf, 0) == 0) {
external_raise = &raise_buf;
output_val(chan, val, Val_unit);
} else {