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Subject: call_user_function_ex() affects zval value
From: adam.baratz@gmail.com (Adam Baratz)

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Content-Type: text/plain; charset=UTF-8

Hi,

I'm working on PHP7 compatibility for an extension (which I didn't write).
I discovered an issue with a call like this:

call_user_function_ex(EG(function_table), NULL, zval, &retval, 5, params,
0, NULL);

When zval refers to a [object, string] array, its value is different after
this call. I haven't seen this issue when zval is a string. I realize the
context probably matters here, but I'm having trouble narrowing down what
could be doing this. Any suggestions on how to debug this?

Thanks,
Adam

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