From fc78f45dd96627d66890f423ba1509ec7c668068 Mon Sep 17 00:00:00 2001
From: Jeff Genovy <29107334+jefgen@users.noreply.github.com>
Date: Thu, 14 Sep 2017 19:04:20 +0000
Subject: [PATCH] ICU-13356 gennorm2 crashes if the input file contains blank
 lines.

X-SVN-Rev: 40414
---
 icu4c/source/tools/gennorm2/gennorm2.cpp | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/icu4c/source/tools/gennorm2/gennorm2.cpp b/icu4c/source/tools/gennorm2/gennorm2.cpp
index c0815c4e577..2d24d61071b 100644
--- a/icu4c/source/tools/gennorm2/gennorm2.cpp
+++ b/icu4c/source/tools/gennorm2/gennorm2.cpp
@@ -235,6 +235,9 @@ void parseFile(std::ifstream &f, Normalizer2DataBuilder &builder) {
     std::string lineString;
     uint32_t startCP, endCP;
     while(std::getline(f, lineString)) {
+        if (lineString.empty()) {
+            continue;  // skip empty lines.
+        }
 #if (U_CPLUSPLUS_VERSION >= 11)
         char *line = &lineString.front();
 #else
-- 
2.40.0