From: Adam Nemet <anemet@apple.com>
Date: Tue, 28 Feb 2017 23:59:46 +0000 (+0000)
Subject: [opt-viewer] Handle column number 0
X-Git-Url: https://granicus.if.org/sourcecode?a=commitdiff_plain;h=2f28d0c7badb4df5a7a7c2fd1cb2ac0e66a50844;p=llvm

[opt-viewer] Handle column number 0

The asm-printer now emits remarks with function location which have
unspecified (0) source column number.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@296547 91177308-0d34-0410-b5e6-96231b3b80d8
---

diff --git a/utils/opt-viewer/opt-viewer.py b/utils/opt-viewer/opt-viewer.py
index d56e295425f..597c7031069 100755
--- a/utils/opt-viewer/opt-viewer.py
+++ b/utils/opt-viewer/opt-viewer.py
@@ -217,7 +217,7 @@ class SourceFileRenderer:
 
         # Column is the number of characters *including* tabs, keep those and
         # replace everything else with spaces.
-        indent = line[:r.Column - 1]
+        indent = line[:max(r.Column, 1) - 1]
         indent = re.sub('\S', ' ', indent)
 
         print('''