Merge pull request #13303 from ncteisen/ubsan
Fix internal UBSAN failure
diff --git a/src/core/ext/filters/client_channel/uri_parser.cc b/src/core/ext/filters/client_channel/uri_parser.cc
index 917e653..1cc52de 100644
--- a/src/core/ext/filters/client_channel/uri_parser.cc
+++ b/src/core/ext/filters/client_channel/uri_parser.cc
@@ -59,7 +59,9 @@
static char* decode_and_copy_component(grpc_exec_ctx* exec_ctx, const char* src,
size_t begin, size_t end) {
grpc_slice component =
- grpc_slice_from_copied_buffer(src + begin, end - begin);
+ (begin == NOT_SET || end == NOT_SET)
+ ? grpc_empty_slice()
+ : grpc_slice_from_copied_buffer(src + begin, end - begin);
grpc_slice decoded_component =
grpc_permissive_percent_decode_slice(component);
char* out = grpc_dump_slice(decoded_component, GPR_DUMP_ASCII);