9bced47706
We do a division by the elem type size to check if the array size would
be too large for the virtual address space. This is a silly check if the
size is 0, but the problem is that it means a division by zero and a
panic.
Since arrays of empty structs are valid in a regular program, make them
also work in reflect.
Use a separate, explicit test with struct{}{} to make sure the test for
a zero-sized type is not confused with the rest.
Fixes #20313.
Change-Id: I47b8b87e6541631280b79227bdea6a0f6035c9e0
Reviewed-on: https://go-review.googlesource.com/43131
Run-TryBot: Daniel Martí <mvdan@mvdan.cc>
Reviewed-by: Brad Fitzpatrick <bradfitz@golang.org>
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