From 4b74d6c5b748398d8572ff87a307a8df159dae88 Mon Sep 17 00:00:00 2001
From: Eduard Voronkin <edward.voronkin@gmail.com>
Date: Thu, 18 Sep 2025 18:20:50 -0700
Subject: [PATCH] FASTBuild: fix possible collision in exec's name

I was lucky enough to hit a hash collision
in the first 7 hex digits (28 bits) of SHA256 :)
---
 Source/cmFastbuildTargetGenerator.cxx | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/Source/cmFastbuildTargetGenerator.cxx b/Source/cmFastbuildTargetGenerator.cxx
index a153d95c6a..864af0d492 100644
--- a/Source/cmFastbuildTargetGenerator.cxx
+++ b/Source/cmFastbuildTargetGenerator.cxx
@@ -155,7 +155,7 @@ std::string cmFastbuildTargetGenerator::GetCustomCommandTargetName(
   extras += std::to_string(static_cast<int>(step));
 
   cmCryptoHash hash(cmCryptoHash::AlgoSHA256);
-  targetName += "-" + hash.HashString(extras).substr(0, 7);
+  targetName += "-" + hash.HashString(extras).substr(0, 14);
 
   return targetName;
 }