Add missing header in petsc_complex/assemble_01

diff --git a/tests/petsc_complex/assemble_01.cc b/tests/petsc_complex/assemble_01.cc
index bcb1987320ffc1a64044caf80ba835a9fa0f25e3..9afa0783223a50fdc4990026c2ddd961b97baa4a 100644 (file)
--- a/tests/petsc_complex/assemble_01.cc
+++ b/tests/petsc_complex/assemble_01.cc
@@ -27,6 +27,8 @@
 
 #include "../tests.h"
 
+#include <numeric>
+
 
 int main (int argc,char **argv)
 {