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remove zend_atomic abstraction #23927

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remove zend_atomic abstraction #23927

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f991cae
remove different implementations of zend_atomic
henderkes Sep 26, 2026
04d09af
up to c17
henderkes Sep 26, 2026
4be1214
remove zend_atomic entirely
henderkes Sep 27, 2026
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7 changes: 7 additions & 0 deletions UPGRADING.INTERNALS
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Original file line number Diff line number Diff line change
Expand Up @@ -17,11 +17,18 @@ PHP 8.7 INTERNALS UPGRADE NOTES
- Removed zend_execute_scripts(). Manually call zend_execute_script() in a loop
instead.
- Removed ZEND_STATIC_ASSERT(). Use C11 static_assert() directly instead.
- Removed zend_atomic.h and the zend_atomic_* types and functions.
Use the standard C11 atomic_* types and functions instead.

========================
2. Build system changes
========================

- Windows build system changes:
. C sources are now compiled as C17 and require C11 atomics. MSVC builds require
Visual Studio 2022 17.5 or later and enable /experimental:c11atomics.
. C++-only extension compiler flags can be added to CXXFLAGS_<EXTENSION>.

- Unix build system changes:
. Autoconf minimum required version upgraded to 2.71.

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75 changes: 0 additions & 75 deletions Zend/zend_atomic.c
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