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-rw-r--r--contrib/bc/src/dc_lex.c2
1 files changed, 2 insertions, 0 deletions
diff --git a/contrib/bc/src/dc_lex.c b/contrib/bc/src/dc_lex.c
index 5c6950ba9698..576d50943f25 100644
--- a/contrib/bc/src/dc_lex.c
+++ b/contrib/bc/src/dc_lex.c
@@ -157,6 +157,8 @@ void dc_lex_token(BcLex *l) {
char c = l->buf[l->i++], c2;
size_t i;
+ BC_SIG_ASSERT_LOCKED;
+
// If the last token was a command that needs a register, we need to parse a
// register, so do so.
for (i = 0; i < dc_lex_regs_len; ++i) {