Fix GH-18847: set EX(opline) when the tracing JIT enters a call frame#142
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Fix GH-18847: set EX(opline) when the tracing JIT enters a call frame#142iliaal wants to merge 1 commit into
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The tracing JIT enters a callee frame without writing EX(opline) to memory; it keeps the opline in the IP register and writes it back lazily. When a fatal error is raised before that first store, such as an out-of-memory while the callee's first opcode pushes its own call frame, zend_fetch_debug_backtrace() dereferences the NULL EX(opline). Materialize it at entry, as the observer path already did behind ZEND_OBSERVER_ENABLED. Fixes phpGH-18847
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Promoted upstream: php#22542. |
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Under the tracing JIT, entering a callee frame doesn't materialize
EX(opline)in memory (it stays virtual in the IP register), so a fatal error at the frame's first opcode, e.g. an OOM while it pushes its own call frame, makeszend_fetch_debug_backtrace()dereference a NULL opline. That store already existed on the observer path but was gated behindZEND_OBSERVER_ENABLED; this drops the gate.Note for review: this adds one
EX(opline)store per JIT call-frame entry (the same store observer builds already emit); flagging in case you'd prefer to narrow it.Fixes php#18847