1 | // RUN: %clang -fPIC -shared -O2 -D_FORTIFY_SOURCE=2 -D_DSO %s -o %t.so |
2 | // RUN: %clang_asan %s -o %t %t.so |
3 | // RUN: not %run %t 2>&1 | FileCheck %s |
4 | // REQUIRES: glibc-2.27 |
5 | #ifdef _DSO |
6 | #include <stdarg.h> |
7 | #include <stdio.h> |
8 | #include <stdlib.h> |
9 | #include <string.h> |
10 | __attribute__((noinline)) char foo(const char *format, ...) { |
11 | char *write_buffer = (char *)malloc(1); |
12 | va_list ap; |
13 | va_start(ap, format); |
14 | // CHECK: AddressSanitizer: heap-buffer-overflow |
15 | vsnprintf(write_buffer, 4096, format, ap); |
16 | va_end(ap); |
17 | return write_buffer[0]; |
18 | } |
19 | #else |
20 | extern int foo(const char *format, ...); |
21 | int main() { return foo(format: "%s_%s" , "one" , "two" ); } |
22 | #endif |
23 | |