details: https://hg.nginx.org/njs/rev/41d0de3ad198
branches:
changeset: 2256:41d0de3ad198
user: Dmitry Volyntsev <xei...@nginx.com>
date: Mon Jan 08 16:40:42 2024 -0800
description:
Improved array enumeration with length 0.
The fix eliminates an arithmetic operation with NULL pointer.
Found by UndefinedBehaviorSanitizer.
diffstat:
src/njs_object.c | 2 +-
1 files changed, 1 insertions(+), 1 deletions(-)
diffs (12 lines):
diff -r ee4d396aa418 -r 41d0de3ad198 src/njs_object.c
--- a/src/njs_object.c Mon Jan 08 16:40:42 2024 -0800
+++ b/src/njs_object.c Mon Jan 08 16:40:42 2024 -0800
@@ -591,7 +591,7 @@ njs_object_enumerate_array(njs_vm_t *vm,
njs_value_t *p, *start, *end;
njs_array_t *entry;
- if (!array->object.fast_array) {
+ if (!array->object.fast_array || array->length == 0) {
return NJS_OK;
}
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