From b5cd96f1d6bc1a05d3be9f6055750b36bf026f0f Mon Sep 17 00:00:00 2001
From: Anthony Scemama <scemama@irsamc.ups-tlse.fr>
Date: Mon, 6 May 2019 13:33:20 +0200
Subject: [PATCH] removes annoying warning
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```
[ 31%] Building CXX object numgrid/CMakeFiles/numgrid-objects.dir/lebedev/sphere_lebedev_rule.cpp.o
/home/scemama/Downloads/numgrid/numgrid/lebedev/sphere_lebedev_rule.cpp: In function ‘void timestamp()’:
/home/scemama/Downloads/numgrid/numgrid/lebedev/sphere_lebedev_rule.cpp:6483:10: warning: variable ‘len’ set but not used [-Wunused-but-set-variable]
   size_t len;
          ^~~
```
---
 numgrid/lebedev/sphere_lebedev_rule.cpp | 8 ++++++++
 1 file changed, 8 insertions(+)

diff --git a/numgrid/lebedev/sphere_lebedev_rule.cpp b/numgrid/lebedev/sphere_lebedev_rule.cpp
index c5db071..f57926c 100644
--- a/numgrid/lebedev/sphere_lebedev_rule.cpp
+++ b/numgrid/lebedev/sphere_lebedev_rule.cpp
@@ -6487,6 +6487,14 @@ void timestamp ( void )
   tm = localtime ( &now );
 
   len = strftime ( time_buffer, TIME_SIZE, "%d %B %Y %I:%M:%S %p", tm );
+  if (len == 0)
+  {
+    fprintf ( stderr, "\n" );
+    fprintf ( stderr, "TIMESTAMP - Fatal error!\n" );
+    fprintf ( stderr, "  TIME_SIZE constant too small.\n" );
+    exit ( 1 );
+  }
+ 
 
   fprintf ( stdout, "%s\n", time_buffer );