2 files changed, 12 insertions, 1 deletions

diff --git a/miscutils/bc.c b/miscutils/bc.c
index d37417f11..e7983f38d 100644
--- a/miscutils/bc.c
+++ b/miscutils/bc.c
@@ -4205,8 +4205,14 @@ static BC_STATUS zbc_parse_for(BcParse *p)
 
         if (p->l.t.t != BC_LEX_SCOLON)
                 s = zbc_parse_expr(p, BC_PARSE_REL);
-        else
+        else {
+                // Set this for the next call to bc_parse_number.
+                // This is safe to set because the current token is a semicolon,
+                // which has no string requirement.
+                bc_vec_string(&p->l.t.v, 1, "1");
+                bc_parse_pushNUM(p);
                 s = bc_POSIX_does_not_allow_empty_X_expression_in_for("condition");
+        }
 
         if (s) RETURN_STATUS(s);
         if (p->l.t.t != BC_LEX_SCOLON) RETURN_STATUS(bc_error_bad_token());
diff --git a/testsuite/bc.tests b/testsuite/bc.tests
index d33f8c90a..edff209bb 100755
--- a/testsuite/bc.tests
+++ b/testsuite/bc.tests
@@ -51,6 +51,11 @@ testing "bc if 0 else if 1" \
         "2\n9\n" \
         "" "if (0) 1 else if (1) 2; 9"
 
+testing "bc for(;;)" \
+        "bc" \
+        "2\n3\n2\n9\n" \
+        "" "i=2; for (;;) { 2; if(--i==0) break; 3; }; 9"
+
 testing "bc define auto" \
         "bc" \
         "8\n9\n" \