Description:
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Null bytes in exception messages truncate the messages when the exception is casted to a string.

Affects also older versions of PHP.

Test script:
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https://3v4l.org/JldYh

Expected result:
----------------
string(52) "Exception:  bar foo in /in/JldYh:3
Stack trace:
#0 {main}foo"

Actual result:
--------------
string(52) "Exception:  in /in/JldYh:3
Stack trace:
#0 {main}foo"