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contributing: document the allowed internal use of anonymous structs/unions

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Janne Grunau
2020-08-23 00:32:39 +02:00
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CONTRIBUTING.md
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@@ -12,7 +12,7 @@ The todo list can be found [on the wiki](https://code.videolan.org/videolan/dav1
The codebase is developed with the following assumptions: The codebase is developed with the following assumptions:
For the library: For the library:
- C language with C99 version, without the VLA or the Complex (*\_\_STDC_NO_COMPLEX__*) features, and without compiler extension, - C language with C99 version, without the VLA or the Complex (*\_\_STDC_NO_COMPLEX__*) features, and without compiler extensions. Anonymous structures and unions are the only allowed compiler extensions for internal code.
- x86 asm in .asm files, using the NASM syntax, - x86 asm in .asm files, using the NASM syntax,
- arm/arm64 in .S files, using the GAS syntax limited to subset llvm 5.0's internal assembler supports, - arm/arm64 in .S files, using the GAS syntax limited to subset llvm 5.0's internal assembler supports,
- no C++ is allowed, whatever the version. - no C++ is allowed, whatever the version.