check-code: prevent use of strcpy

contrib/check-code.py

@@ -359,6 +359,7 b' cpats = ['
     (r'^#\s+\w', "use #foo, not # foo"),
     (r'[^\n]\Z', "no trailing newline"),
     (r'^\s*#import\b', "use only #include in standard C code"),
+    (r'strcpy\(', "don't use strcpy, use strlcpy or memcpy"),
   ],
   # warnings
   []

tests/test-contrib-check-code.t

@@ -69,6 +69,22 b''
    dict() is different in Py2 and 3 and is slower than {}
   [1]
 
+  $ cat > foo.c <<EOF
+  > void narf() {
+  > 	strcpy(foo, bar);
+  > 	// strcpy_s is okay, but this comment is not
+  > 	strcpy_s(foo, bar);
+  > }
+  > EOF
+  $ "$check_code" ./foo.c
+  ./foo.c:2:
+   > 	strcpy(foo, bar);
+   don't use strcpy, use strlcpy or memcpy
+  ./foo.c:3:
+   > 	// strcpy_s is okay, but this comment is not
+   don't use //-style comments
+  [1]
+
   $ cat > is-op.py <<EOF
   > # is-operator comparing number or string literal
   > x = None