CPP: Add a test cases that uses restrict.

Author: geoffw0

cpp/ql/test/query-tests/Likely Bugs/Format/WrongTypeFormatArguments/Linux_signed_chars/WrongTypeFormatArguments.expected

@@ -1,6 +1,7 @@
 | format.h:16:59:16:61 | str | This argument should be of type 'int' but is of type 'char *' |
 | format.h:16:64:16:64 | i | This argument should be of type 'double' but is of type 'int' |
 | format.h:16:67:16:67 | d | This argument should be of type 'char *' but is of type 'double' |
+| linux_c.c:11:15:11:18 | str3 | This argument should be of type 'char *' but is of type 'short *' |
 | pri_macros.h:15:35:15:40 | my_u64 | This argument should be of type 'unsigned int' but is of type 'unsigned long long' |
 | printf1.h:12:27:12:27 | i | This argument should be of type 'double' but is of type 'int' |
 | printf1.h:18:18:18:18 | i | This argument should be of type 'void *' but is of type 'int' |

cpp/ql/test/query-tests/Likely Bugs/Format/WrongTypeFormatArguments/Linux_signed_chars/linux_c.c

@@ -0,0 +1,12 @@
+/** standard printf functions */
+
+int printf(const char *format, ...);
+
+/** test program */
+
+void restrict_cases(char * restrict str1, const char * restrict str2, short * restrict str3)
+{
+	printf("%s", str1); // GOOD
+	printf("%s", str2); // GOOD
+	printf("%s", str3); // BAD
+}

cpp/ql/test/query-tests/Likely Bugs/Format/WrongTypeFormatArguments/Linux_signed_chars/options

@@ -1 +1 @@
-semmle-extractor-options: --edg --signed_chars
+semmle-extractor-options: --clang --edg --signed_chars