[libcxx-commits] [libcxx] [libc++] Avoid constructing additional objects when using map::at (PR #157866)

[Sam Clegg via libcxx-commits]

sbc100 wrote:

This change is currently breaking the emscripten release builders too: 
https://autoroll.skia.org/r/llvm-project-emscripten-releaseshttps://logs.chromium.org/logs/emscripten-releases/buildbucket/cr-buildbucket/8702739077954339681/+/u/Build_LLVM/stdout

I suggest we land the revert 

https://github.com/llvm/llvm-project/pull/157866