Code Coverage

Total coverage

Last updated: 2019-05-14 17:41:12

Line coverage: 39.8% (519470 / 1304847)
Function coverage: 42.0% (30933 / 73567)

Function coverage is generally better than line coverage across the code base. Test code has high levels of code coverage indicating that these tests are actually being run.

Areas of interest

bin/default/librpc/gen_ndr (Generated Code)

Line coverage: 18.1% (104224 / 574711)

Generated code contributes to almost half all detected C code. This code is generated using PIDL which reads IDL files and generates (network) marshalling code. In particular, it writes binary serialization and deserialization functions for structures sent over network protocols, formatted print routines for structures and in some cases generates remote procedure call (RPC) interfaces. These RPC interfaces are generally for DCE/RPC protocols implemented by Active Directory and internal messaging. They are often stubbed and allow manual implementation elsewhere in the code.

In many cases, there are no callers of our formatted print routines for many structures. Many structures remain unused, and many structures are deprecated (e.g. v3, v5 are from earlier versions of the protocol and v8 is commonly in use), as well as many functions defined in various RPC protocol specifications. In fact, many exposed functions which are at the latest version may still be superseded by non-RPC mechanisms, or clients generally perform these operations over a different protocol e.g. LDAP.

One other caveat with the generated code is that there is a significant amount of dead-code generated because PIDL is quite simple and may duplicate a number of different checks that LCOV might be detecting.