From f2a8df6171b3eae8c949c892e8a35d7acd51084c Mon Sep 17 00:00:00 2001 From: Jakob Kaivo Date: Tue, 30 Jun 2020 15:31:31 -0400 Subject: add a test program that can be wrapped with LD_PRELOAD --- test/wrapper.c | 22 ++++++++++++++++++++++ 1 file changed, 22 insertions(+) create mode 100644 test/wrapper.c (limited to 'test/wrapper.c') diff --git a/test/wrapper.c b/test/wrapper.c new file mode 100644 index 0000000..a260894 --- /dev/null +++ b/test/wrapper.c @@ -0,0 +1,22 @@ +#define _POSIX_C_SOURCE 200809L +#include +#include +#include +#include + +int main(void) +{ + const char buf[] = "THIS IS A CONSTANT STRING"; + + char *ptr = realloc(NULL, sizeof(buf)); + memcpy(ptr, buf, sizeof(buf)); + printf("%p: %s\n", ptr, ptr); + + ptr = realloc(ptr, sizeof(buf) * 2); + memcpy(ptr + sizeof(buf) - 1, buf, sizeof(buf)); + printf("%p: %s\n", ptr, ptr); + + ptr = realloc(ptr, sizeof(buf) * sysconf(_SC_PAGESIZE)); + memcpy(ptr + (2 * sizeof(buf)) - 2, buf, sizeof(buf)); + printf("%p: %s\n", ptr, ptr); +} -- cgit v1.2.1