[all-commits] [llvm/llvm-project] 178c2b: Correctly diagnose taking the address of a registe...

[Aaron Ballman via All-commits]

  Branch: refs/heads/main
  Home:   https://github.com/llvm/llvm-project
  Commit: 178c2b4c1eb12b2153adb384ac7f22a8791edc86
      https://github.com/llvm/llvm-project/commit/178c2b4c1eb12b2153adb384ac7f22a8791edc86
  Author: Aaron Ballman <aaron at aaronballman.com>
  Date:   2021-07-22 (Thu, 22 Jul 2021)

  Changed paths:
    M clang/lib/Sema/Sema.cpp
    M clang/lib/Sema/SemaExpr.cpp
    M clang/test/Sema/expr-address-of.c

  Log Message:
  -----------
  Correctly diagnose taking the address of a register variable in C

We caught the cases where the user would explicitly use the & operator,
but we were missing implicit conversions such as array decay.

Fixes PR26336. Thanks to Samuel Neves for inspiration for the patch.