[PATCH] D63742: [WebAssembly] Implement Address Sanitizer for Emscripten

[Guanzhong Chen via Phabricator via cfe-commits]

quantum marked an inline comment as done.
quantum added a comment.

As for the name, I think `__global_base` matches the command line flag and makes it more clear what controls it, so I lean towards that.



================
Comment at: lld/wasm/Writer.cpp:228
+  if (WasmSym::GlobalBase)
+    WasmSym::GlobalBase->setVirtualAddress(Config->GlobalBase);
+
----------------
sbc100 wrote:
> Surly if emscripten is passing in --global-base it already knows this value?  
> 
> Otherwise lgtm.   Perhaps split of the lld part into a separate change?
In theory, emscripten knows this value. But as some library code needs this information, the alternative would be to have build an object file with this information and link it in. Since we already have `__data_end` and `__heap_base`, I think it makes sense for this information to be available too.


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  https://reviews.llvm.org/D63742/new/

https://reviews.llvm.org/D63742