From faa80a297236c5976a80429784ed91315adbc4c3 Mon Sep 17 00:00:00 2001
From: Rich Gillam <richard_gillam@apple.com>
Date: Tue, 4 Mar 2025 18:09:25 -0800
Subject: [PATCH] ICU-23062 Added null check in one spot in genrb where we know
 we've seen crashes.

---
 icu4c/source/tools/genrb/parse.cpp | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/icu4c/source/tools/genrb/parse.cpp b/icu4c/source/tools/genrb/parse.cpp
index eb85d5157a6..3a53e999ff1 100644
--- a/icu4c/source/tools/genrb/parse.cpp
+++ b/icu4c/source/tools/genrb/parse.cpp
@@ -297,7 +297,7 @@ static char *getInvariantString(ParseState* state, uint32_t *line, struct UStrin
 
     if(!uprv_isInvariantUString(tokenValue->fChars, tokenValue->fLength)) {
         *status = U_INVALID_FORMAT_ERROR;
-        error(*line, "invariant characters required for table keys, binary data, etc.");
+        error((line == nullptr) ? 0 : *line, "invariant characters required for table keys, binary data, etc.");
         return nullptr;
     }