From: =?utf-8?q?Timo_R=C3=B6hling?= <roehling@debian.org>
Date: Sun, 28 May 2023 12:02:38 +0200
Subject: Tolerate empty /proc/cpuinfo

Forwarded: https://gitlab.kitware.com/utils/kwsys/-/merge_requests/284
           https://gitlab.kitware.com/cmake/cmake/-/merge_requests/8504
---
 Source/kwsys/SystemInformation.cxx | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/Source/kwsys/SystemInformation.cxx b/Source/kwsys/SystemInformation.cxx
index 20e2edb..7f8485e 100644
--- a/Source/kwsys/SystemInformation.cxx
+++ b/Source/kwsys/SystemInformation.cxx
@@ -3453,6 +3453,10 @@ bool SystemInformationImplementation::RetrieveInformationFromCpuInfoFile()
     fileSize++;
   }
   fclose(fd);
+  if (fileSize < 2) {
+    std::cout << "No data in /proc/cpuinfo" << std::endl;
+    return false;
+  }
   buffer.resize(fileSize - 2);
   // Number of logical CPUs (combination of multiple processors, multi-core
   // and SMT)