[llvm-nm] Report '.comment' ELF sections as 'n' instead of '?'

Summary:
The previous implementation reported `.comment` sections as '?'
GNU uses 'n' which means  "The symbol is a debugging symbol."  `.note`  sections are represented as 'n' too.

The test related to this change was updated to CHECK-NEXT to ensure
order and that we did not miss any symbols in the dump.

Reviewers: jhenderson

Reviewed By: jhenderson

Subscribers: rupprecht, llvm-commits

Differential Revision: https://reviews.llvm.org/D57544

llvm-svn: 352891

1 files changed, 1 insertions, 0 deletions

diff --git a/llvm/tools/llvm-nm/llvm-nm.cpp b/llvm/tools/llvm-nm/llvm-nm.cpp
index 83620778359..3a83fdb1424 100644
--- a/llvm/tools/llvm-nm/llvm-nm.cpp
+++ b/llvm/tools/llvm-nm/llvm-nm.cpp
@@ -935,6 +935,7 @@ static char getSymbolNMTypeChar(ELFObjectFileBase &Obj,
     return StringSwitch<char>(*Name)
         .StartsWith(".debug", 'N')
         .StartsWith(".note", 'n')
+        .StartsWith(".comment", 'n')
         .Default('?');
   }