[all-commits] [llvm/llvm-project] d811c8: [flang] fix spurious runtime crash on TRIM('')

[Peter Klausler via All-commits]

  Branch: refs/heads/main
  Home:   https://github.com/llvm/llvm-project
  Commit: d811c829af616fd0bec08c7bebbe946e9bc96eea
      https://github.com/llvm/llvm-project/commit/d811c829af616fd0bec08c7bebbe946e9bc96eea
  Author: peter klausler <pklausler at nvidia.com>
  Date:   2021-03-25 (Thu, 25 Mar 2021)

  Changed paths:
    M flang/runtime/descriptor.cpp

  Log Message:
  -----------
  [flang] fix spurious runtime crash on TRIM('')

The standard interoperability routine CFI_establish() does not
accept a zero-length CHARACTER type.  Since these can be valid
results of intrinsic function references, work around the design
of CFI_establish() in the wrapper routine that calls it.

Differential Revision: https://reviews.llvm.org/D99296