opt-viewer: fix HtmlFormatter encoding

Summary: Small fix to HtmlFormatter, defaults to ascii encoding, so utf-8 output may get `UnicodeEncodeError: 'ascii' codec can't encode character ... ordinal not in range(128)` during write.

Patch by Brian Cain!

Reviewers: anemet, fhahn

Reviewed By: anemet

Subscribers: llvm-commits

Differential Revision: https://reviews.llvm.org/D29802

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@294710 91177308-0d34-0410-b5e6-96231b3b80d8

diff --git a/utils/opt-viewer/opt-viewer.py b/utils/opt-viewer/opt-viewer.py
index 02a19b134e5326c807667ce1c7e64f01405a38a1..31fd7995946103a91a8890869d9833e4adcdce1f 100755 (executable)
--- a/utils/opt-viewer/opt-viewer.py
+++ b/utils/opt-viewer/opt-viewer.py
@@ -183,7 +183,7 @@ class SourceFileRenderer:
 </html>
             '''.format(filename), file=self.stream)
 
-        self.html_formatter = HtmlFormatter()
+        self.html_formatter = HtmlFormatter(encoding='utf-8')
         self.cpp_lexer = CppLexer()
 
     def render_source_line(self, linenum, line):