Add clang static analyzer to reduce criteria

tests/reduce-criteria-template.sh

@@ -54,7 +54,9 @@ if
   grep 'incompatible implicit' outa.txt ||\
   grep 'excess elements in struct initializer' outa.txt ||\
   grep 'comparison between pointer and integer' outa.txt ||\
-  grep 'division by zero' outa.txt)
+  grep 'division by zero' outa.txt ||\
+  ! clang -Wall -Wextra --analyze -c test_reduced.c > outb.txt 2>&1 ||\
+  grep 'garbage value' outb.txt)
 then
   exit 1
 fi