Chiebot-Mirror/protobuf - protobuf - Gitea: Git with a cup of tea

Author	SHA1	Message	Date
Joshua Haberman	6e1cbdfe09	Added fuzzer for descriptor parsing/serialization, and fixed several bugs. The initial motivation for this change was to fix a bug found by fuzzing. The old fuzz test (built on `cc_fuzz_target()`) detected an infinite loop if a bytes field default has an unterminated `\x` escape. To fix this bug while expanding fuzz coverage, I created a fuzz test that verifies that we can do a lossless round trip from descriptor -> DefPool -> descriptor. We use C++ as the source of truth for whether a descriptor is valid or not, and what the canonical serialization back to protobuf form should be. I wrote the new fuzz test using go/FuzzTest, which makes it easier and more readable to use an arbitrary `FileDescriptorSet` as input, while adding test cases for regressions. The fuzz test highlighted a handful of errors that I subsequently fixed and added regression tests for: 1. The aforementioned unterminated `\x` bug. 2. We were not propagating the `edition` field. 3. We were missing the CheckIdent() check in a few places. 4. We were rejecting files with empty name, whereas C++ allows this. 5. There were a few bugs with escaping string defaults. Since FuzzTest is Clang-only, I split the `FUZZ_TEST()` invocation from the regression tests, since the latter are portable and should be run on all platforms. Only `FUZZ_TEST()` itself is in a google3/Clang-only file. PiperOrigin-RevId: 506997362	2 years ago
Joshua Haberman	204b9eeffa	Added UPB_DESC() macro for all bootstrap references to proto symbols. We have previously been using Copybara to rewrite these names, but for bootstrapping we will want to be able to sometimes use OSS names inside google3. PiperOrigin-RevId: 500294974	2 years ago
Eric Salo	f6307877d3	move portability stuff into upb/port/ Also delete redundant system #includes that are already pulled in by port/def.inc PiperOrigin-RevId: 486398989	2 years ago
Eric Salo	44916d7d27	create reflection_internal library internal declarations are now physically removed from the public headers PiperOrigin-RevId: 478921131	2 years ago
Eric Salo	00765002ff	- All of reflection now lives in upb/reflection/ - Each def type has its own .c file and its own .h file - Functions that require a builder context are declared in def_builder.h - The mini descriptor encoders have also been pulled into upb/reflection/ - upb/def.h, upb/def.hpp, upb/reflection.h, and upb/reflection.hpp are now deprecated stubs that point to the new headers PiperOrigin-RevId: 474459500	2 years ago