Jason Rhinelander 6873c202b3 Prevent overwriting previous declarations ... Currently pybind11 doesn't check when you define a new object (e.g. a class, function, or exception) that overwrites an existing one. If the thing being overwritten is a class, this leads to a segfault (because pybind still thinks the type is defined, even though Python no longer has the type). In other cases this is harmless (e.g. replacing a function with an exception), but even in that case it's most likely a bug. This code doesn't prevent you from actively doing something harmful, like deliberately overwriting a previous definition, but detects overwriting with a run-time error if it occurs in the standard class/function/exception/def registration interfaces. All of the additions are in non-template code; the result is actually a tiny decrease in .so size compared to master without the new test code (977304 to 977272 bytes), and about 4K higher with the new tests.		2016-10-24 22:45:51 -04:00
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pybind11	Prevent overwriting previous declarations	2016-10-24 22:45:51 -04:00