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[ci skip] Clarify usage of C99 standard (#14993)

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This is mostly about mentioning that VLAs which are a required part of
C99 conforming implementations (although made optional in the C11
standard) *must* *not* be used in php-src.
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Christoph M. Becker 2024-07-18 11:40:58 +02:00 committed by GitHub
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commit f507da913a
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7
CODING_STANDARDS.md
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@ -9,9 +9,12 @@ rewritten to comply with these rules.
1. Document your code in source files and the manual. (tm)
1. PHP is implemented in C99. The optional fixed-width integers from
1. PHP is implemented in C99.
For instance, the optional fixed-width integers from
stdint.h (int8_t, int16_t, int32_t, int64_t and their unsigned
counterparts) must be available.
counterparts) are supposed to be available.
However, some features (most notably variable-length arrays) which are not
supported by all relevant compilers, must not be used.
1. Functions that are given pointers to resources should not free them.