Check cbmc-library regressions for completeness

This will make sure that newly added library functions are also covered by
tests.

Author: tautschnig

src/ansi-c/library_check.sh

@@ -16,3 +16,10 @@ for f in "$@"; do
     rm __libcheck.s __libcheck.i __libcheck.c
     [ "${ec}" -eq 0 ] || exit "${ec}"
 done
+
+grep '^/\* FUNCTION:' ../*/library/* | cut -f3 -d" " | sort -u > __functions
+ls ../../regression/cbmc-library/ | grep -- - | cut -f1 -d- | sort -u > __tests
+diff -u __tests __functions
+ec="${?}"
+rm __functions __tests
+exit "${ec}"