Update zend_execute_API.c

[GXhua]

in some case , these is no opline in execute_data ,such like this:
memset(&fake_execute_data, 0, sizeof(fake_execute_data));

[nikic]

Do you have a test case where this occurs?

[GXhua]

well,Im trying to make a memory analysis tool for PHP, which will intercept emalloc and when it working with opcache, core dump occurs，bt like this:
(gdb) bt
#0 0x00000000009e199d in zend_get_executed_lineno () at /phpsrc/php-7.3.8/Zend/zend_execute_API.c:489
#2 tracker_malloc (size=) at /src/swoole-tracker/apm_mem.c:1709
#3 0x00000000009b944a in _emalloc (size=96) at /phpsrc/php-7.3.8/Zend/zend_alloc.c:2496
#4 0x00000000009c0d9d in zend_string_alloc (persistent=0, len=64) at Zend/zend_string.h:133
#5 zend_mangle_property_name (src1=0x120f980 "COMPILER_HALT_OFFSET", src1_length=24, src2=0x7fc244905ed8 "xxxxx/Utils/Context.php", src2_length=38, internal=0) at /phpsrc/php-7.3.8/Zend/zend_compile.c:1305
#6 0x00000000009de5b5 in zend_get_special_constant (name=0x7fc243efa8cc "COMPILER_HALT_OFFSET", name_len=24) at /phpsrc/php-7.3.8/Zend/zend_constants.c:223
#7 0x00000000009de8b3 in zend_get_constant_str_impl (name=0x7fc243efa8cc "COMPILER_HALT_OFFSET", name_len=24) at /phpsrc/php-7.3.8/Zend/zend_constants.c:259
#8 0x00000000009de8ff in zend_get_constant_str (name=0x7fc243efa8cc "COMPILER_HALT_OFFSET", name_len=24) at /phpsrc/php-7.3.8/Zend/zend_constants.c:269
#9 0x00007fc243e42bd8 in zend_persist_op_array_ex (op_array=0x7fc1f545f808, main_persistent_script=0x7fc1f545f800) at /phpsrc/php-7.3.8/ext/opcache/zend_persist.c:377
the f 9 will set EG(current_execute_data) to fake execute_data which has no opline.
but I think that normal PHP code cannot trigger this. I am not sure if there are other cases, but I think it is better to be protected in this way.

[morrisonlevi]

I think I've hit this sort of case in observers in the .begin handler if I zend_printf. In some cases it works (the zend_test extension tests this, not sure what's different yet).

[Girgias]

Has this PR gone stale?

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