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authorDenys Vlasenko2018-12-21 00:35:22 +0100
committerDenys Vlasenko2018-12-21 00:35:22 +0100
commit52caa007e3f32225b6cd9f899480362c4563b023 (patch)
treebb44c017ba5aafc819d5723b60ddb27728bfd1d3 /miscutils
parent047154472ac41ddf45ed57d9bc294fbf9057cbad (diff)
downloadbusybox-52caa007e3f32225b6cd9f899480362c4563b023.zip
busybox-52caa007e3f32225b6cd9f899480362c4563b023.tar.gz
bc: for(;;) fix from upstream
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
Diffstat (limited to 'miscutils')
-rw-r--r--miscutils/bc.c8
1 files changed, 7 insertions, 1 deletions
diff --git a/miscutils/bc.c b/miscutils/bc.c
index d37417f..e7983f3 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());