https://bugs.llvm.org/show_bug.cgi?id=50652
Bug ID: 50652
Summary: [Coroutine] Coroutine Elide would eliminate user
provided new even if it had side effects
Product: clang
Version: trunk
Hardware: PC
OS: All
Status: NEW
Severity: normal
Priority: P
Component: C++2b
Assignee: unassignedclangb...@nondot.org
Reporter: yedeng...@linux.alibaba.com
CC: blitzrak...@gmail.com, erik.pilking...@gmail.com,
llvm-bugs@lists.llvm.org, richard-l...@metafoo.co.uk
Example: https://godbolt.org/z/cx4fbzvqb
In this example, user provided a operator new with side effects (print). From
the language side, the program should print the times we create coroutine
frame. However, since the compiler made coroutine elision optimization, all the
call to provided new are removed. So from the language side, it looks like a
compiler bug.
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