In both cases a `size_t` was being converted to a `uint32_t`. These headers are used from application code, or at least from generated code, and the application may be compiling with more warnings enabled than normal.
Closes#12762
COPYBARA_INTEGRATE_REVIEW=https://github.com/protocolbuffers/protobuf/pull/12762 from coryan:fix-avoid-warnings-with-MSVC 5ba6b5db1e
PiperOrigin-RevId: 531506224
This crash was due to the fact that we were passing `nullptr` as a `const
char*` parameter and relying on that implicitly converting into an empty
`absl::string_view`. `absl::string_view` supports that functionality, but
starting with C++17 its behavior changes since it's just a type alias for
`std::string_view`. `std::string_view` does not have any special conversion for
nullptr and so we were just getting crashes.
PiperOrigin-RevId: 530431663
Warnings in header files can be a problem for consumers that enable `/WX` (or `-Werror`). In this case, using `... & -align` produces a warning (C4146) with MSVC. The fix is to use equivalent expression `... & ~(align - 1)`, which was already used in the same file.
Fixes#12675Closes#12697
COPYBARA_INTEGRATE_REVIEW=https://github.com/protocolbuffers/protobuf/pull/12697 from coryan:fix-msvc-warnings-in-arena-align 835f3b489a
PiperOrigin-RevId: 530137165
On Wndows, `size_t` is 64-bits, and `int` is 32-bits. That makes conversions from `size_t` to `int` potentially lossy, and they generate warnings. In this case an `int` variable was assigned to `size_t` and then passed to functions consuming `int`. Seems simpler to use `auto` and avoid these problems altogether.
Closes#12701
COPYBARA_INTEGRATE_REVIEW=https://github.com/protocolbuffers/protobuf/pull/12701 from coryan:fix-warnings-repeated-field-warnings-in-msvc b1ec34de77
PiperOrigin-RevId: 530134611
When the protobuf libraries have been compiled as shared libraries the users of the library need to add `-DPROTOBUF_USE_DLLS` to their build line. Otherwise some symbols are missing.
Fixes#12699
FWIW, I am not sure this is an ideal fix. It may be better to fix the headers such that no macros change the ABI.
Closes#12700
COPYBARA_INTEGRATE_REVIEW=https://github.com/protocolbuffers/protobuf/pull/12700 from coryan:fix-define-protobuf-use-dlls-in-pkg-config-file 13c792eebd
PiperOrigin-RevId: 530116678
Note: gcc only supports docker images down to 9.5, and the 7.3 image is very old and problematic. A follow-up change might enable testing for GCC 7.3, which is our minimal supported version
PiperOrigin-RevId: 529885733
These more closely follow the standard practices of our users, where dependencies are pre-installed instead of using our provided sub-modules. This will prevent issues such as #12201 from reoccuring.
Additionally, this cl bumps our Abseil dependency to the latest release, and fixes a GTest issue that went previously unnoticed.
PiperOrigin-RevId: 529490402
We found last week that Clang's support for `musttail` on 32-bit Linux does not
seem to work reliably, so let's disable it for now.
PiperOrigin-RevId: 528817403
Carlos O'Ryan
Mike Kruskal
Mike Kruskal
Adam Cozzette
deannagarcia
Protobuf Team Bot
Matt Fowles Kulukundis
Protobuf Team Bot
Deanna Garcia
Thomas Van Lenten