[PATCH] D137227: [asan] Default to -fsanitize-address-use-odr-indicator for non-Windows

[Sam Clegg via Phabricator via cfe-commits]

sbc100 added a comment.

> The asan instrumentation just prepends `__odr_asan_gen_` to the symbol name to form a new symbol name. For ELF every byte except `\0` can be used in a symbol name, and this is totally fine.
>
> I am unfamiliar with WebAssembly. Does the aforementioned parsing tool somehow skip printing `_stdcmd<1068>::init` symbols?

The parser was confused by the presence of a colon in the symbol names and generating an error.  I created a patch that makes it a little more robust: https://github.com/emscripten-core/emscripten/pull/18152

So we have a fix for the proximate issue, but I just wanted to check if that new prepended symbol name was supposed to be the demanded C++ name (which it seem to be) rather than the mangled name?

This is the first time we've had these characters appearing in symbol names so I just wanted to flag that as relatively unprecedented (at least in terms of all the codebases that emscripten has been exposed to so far).

> `ModuleAddressSanitizer::shouldInstrumentGlobal` encodes the candidate global variables.




Repository:
  rG LLVM Github Monorepo

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  https://reviews.llvm.org/D137227/new/

https://reviews.llvm.org/D137227