[all-commits] [llvm/llvm-project] 982604: [llvm-tapi-diff] Replicate diff utility error hand...

[Cyndy Ishida via All-commits]

  Branch: refs/heads/main
  Home:   https://github.com/llvm/llvm-project
  Commit: 982604cc08caa56fc707fe88cb0050fb99a14de4
      https://github.com/llvm/llvm-project/commit/982604cc08caa56fc707fe88cb0050fb99a14de4
  Author: Cyndy Ishida <cyndy_ishida at apple.com>
  Date:   2021-12-18 (Sat, 18 Dec 2021)

  Changed paths:
    M llvm/test/tools/llvm-tapi-diff/tapi-diff-incorrect-format.test
    M llvm/test/tools/llvm-tapi-diff/tapi-diff-misspelled-tbd.test
    M llvm/tools/llvm-tapi-diff/llvm-tapi-diff.cpp

  Log Message:
  -----------
  [llvm-tapi-diff] Replicate diff utility error handling

For scripting purposes, use different error code for cases that aren't a
result of different tbd files, e.g. bad input like a path to a broken
symlink. This behaves more similiarly to how the unix `diff` command behaves.
This also includes minor tweaks on error messages.

Reviewed By: ributzka, JDevlieghere

Differential Revision: https://reviews.llvm.org/D115905