Sam Clegg c55d13f461 [WebAssembly] MC: Don't allow zero sized data segments ...

This ensures that each segment has a unique address.
Without this, consecutive zero sized symbols would
end up with the same address and the linker cannot
map symbols to unique data segments.

Differential Revision: https://reviews.llvm.org/D39107

llvm-svn: 316717

2017-10-27 00:08:55 +00:00

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