1 // RUN: %clang_dfsan %s -o %t
2 // RUN: not %run %t 2>&1 | FileCheck %s
3 // RUN: %run %t foo
4
5 #include <stdio.h>
6
do_nothing(const char * format,...)7 int do_nothing(const char *format, ...) {
8 return 0;
9 }
10
main(int argc,char ** argv)11 int main(int argc, char **argv) {
12 int (*fp)(const char *, ...);
13
14 if (argc > 1)
15 fp = do_nothing;
16 else
17 fp = printf;
18
19 // CHECK: FATAL: DataFlowSanitizer: unsupported indirect call to vararg function printf
20 fp("hello %s\n", "world");
21 }
22