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The pclntable contains pointers to functions. If the function symbol is exported in a plugin, and there is a matching symbol in the host binary, then the pclntable of a plugin ends up pointing at the function in the host module. This doesn't work because the traceback code expects the pointer to be in the same module space as the PC value. So don't export functions that might overlap with the host binary. This way the pointer stays in its module. Updates #18190 Change-Id: Ifb77605b35fb0a1e7edeecfd22b1e335ed4bb392 Reviewed-on: https://go-review.googlesource.com/34196 Run-TryBot: David Crawshaw <crawshaw@golang.org> TryBot-Result: Gobot Gobot <gobot@golang.org> Reviewed-by: Ian Lance Taylor <iant@golang.org>