Fix GH-15169: stack overflow when var serialization in ext/standard/var

Adding a stack check here as I consider serialization to be a more
sensitive place where erroring out with an exce

Fix GH-15169: stack overflow when var serialization in ext/standard/var

Adding a stack check here as I consider serialization to be a more
sensitive place where erroring out with an exception seems appropriate.

Closes GH-16159.

show more ...

[skip ci] Mark stack limit tests with high memory limit as slow

Fix stack limit on ASAN/MSAN (#14771)

Increase the reserved stack size in ASAN builds, as instrumentation use more stack.
Increase the max allowed stack size in some tests, and enable th

Fix stack limit on ASAN/MSAN (#14771)

Increase the reserved stack size in ASAN builds, as instrumentation use more stack.
Increase the max allowed stack size in some tests, and enable these tests under ASAN.
Use __builtin_frame_address(0), instead of some stack variable, when we need a stack address, as ASAN may store local variables outside of the real stack.

show more ...

WS

Clarify the stack limit exception message

Make it clearer why the size is not exactly zend.max_allowed_stack_size

Fix test failures when PHP is compiled without ZEND_CHECK_STACK_LIMIT
(e.g. 32-bit CLANG build with address sanitizer)

Skip tests under MSAN

Stack overflows can be detected as long as C stack frames between two
execute_ex() calls use less than zend.reserved_stack_size bytes of stack.

The default

Skip tests under MSAN

Stack overflows can be detected as long as C stack frames between two
execute_ex() calls use less than zend.reserved_stack_size bytes of stack.

The default value of zend.reserved_stack_size accounts for the largest stack
users, but MSAN instrumentation increases usage considerably: php_pcre2_match
uses more than 200KiB of stack in some MSAN build, compared to 20KiB without MSAN
according to -fstack-usage.

show more ...

Limit stack size (#9104)