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-rw-r--r--builtin/sparse-checkout.c2
-rwxr-xr-xt/t1091-sparse-checkout-builtin.sh11
2 files changed, 12 insertions, 1 deletions
diff --git a/builtin/sparse-checkout.c b/builtin/sparse-checkout.c
index d0f5c4702b..9ccdcde983 100644
--- a/builtin/sparse-checkout.c
+++ b/builtin/sparse-checkout.c
@@ -483,7 +483,7 @@ static void insert_recursive_pattern(struct pattern_list *pl, struct strbuf *pat
char *oldpattern = e->pattern;
size_t newlen;
- if (slash == e->pattern)
+ if (!slash || slash == e->pattern)
break;
newlen = slash - e->pattern;
diff --git a/t/t1091-sparse-checkout-builtin.sh b/t/t1091-sparse-checkout-builtin.sh
index 3921ea8013..1f877ced0c 100755
--- a/t/t1091-sparse-checkout-builtin.sh
+++ b/t/t1091-sparse-checkout-builtin.sh
@@ -103,6 +103,17 @@ test_expect_success 'clone --sparse' '
check_files clone a
'
+test_expect_success 'switching to cone mode with non-cone mode patterns' '
+ git init bad-patterns &&
+ (
+ cd bad-patterns &&
+ git sparse-checkout init &&
+ git sparse-checkout add dir &&
+ git config core.sparseCheckoutCone true &&
+ git sparse-checkout add dir
+ )
+'
+
test_expect_success 'interaction with clone --no-checkout (unborn index)' '
git clone --no-checkout "file://$(pwd)/repo" clone_no_checkout &&
git -C clone_no_checkout sparse-checkout init --cone &&