[all-commits] [llvm/llvm-project] 8d4aa1: [clang][Interp] Update global temporaries at the e...

[Timm Baeder via All-commits]

  Branch: refs/heads/main
  Home:   https://github.com/llvm/llvm-project
  Commit: 8d4aa1f22ea08b12a7958b681e8a265f78cb349f
      https://github.com/llvm/llvm-project/commit/8d4aa1f22ea08b12a7958b681e8a265f78cb349f
  Author: Timm Bäder <tbaeder at redhat.com>
  Date:   2024-06-29 (Sat, 29 Jun 2024)

  Changed paths:
    M clang/lib/AST/Interp/EvalEmitter.cpp
    M clang/lib/AST/Interp/EvalEmitter.h
    M clang/lib/AST/Interp/Interp.h
    M clang/lib/AST/Interp/InterpState.h
    A clang/test/AST/Interp/const-temporaries.cpp

  Log Message:
  -----------
  [clang][Interp] Update global temporaries at the end of a declaration

When we create a global temporary variable via a
LifetimeExtendedTemporaryDecl, we have an expression to initialize it
with, so we evaluate that expression, convert it to an APValue and set
it on the LETD. However, when the value is updated after the
initialization, we don't propagate the new value to the LETD, which
means we will see an outdated value set on the LETD.

Fix this by keeping a list of seen LETDs and update them from the
global variable at the end of evaluation a declaration.



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