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// RUN: %clangxx_asan -O0 %s -o %t && %t
// RUN: %clangxx_asan -DPOSITIVE -O0 %s -o %t && not %t 2>&1 | FileCheck %s
#include <assert.h>
#include <stdio.h>
#include <sys/ptrace.h>
#include <sys/types.h>
#include <sys/user.h>
#include <sys/wait.h>
#include <unistd.h>
int main(void) {
pid_t pid;
pid = fork();
if (pid == 0) { // child
ptrace(PTRACE_TRACEME, 0, NULL, NULL);
execl("/bin/true", "true", NULL);
} else {
wait(NULL);
user_regs_struct regs;
int res;
user_regs_struct * volatile pregs = ®s;
#ifdef POSITIVE
++pregs;
#endif
res = ptrace(PTRACE_GETREGS, pid, NULL, pregs);
// CHECK: AddressSanitizer: stack-buffer-overflow
// CHECK: {{.*ptrace.cc:}}[[@LINE-2]]
assert(!res);
#if __WORDSIZE == 64
printf("%zx\n", regs.rip);
#else
printf("%lx\n", regs.eip);
#endif
user_fpregs_struct fpregs;
res = ptrace(PTRACE_GETFPREGS, pid, NULL, &fpregs);
assert(!res);
printf("%lx\n", (unsigned long)fpregs.cwd);
#if __WORDSIZE == 32
user_fpxregs_struct fpxregs;
res = ptrace(PTRACE_GETFPXREGS, pid, NULL, &fpxregs);
assert(!res);
printf("%lx\n", (unsigned long)fpxregs.mxcsr);
#endif
ptrace(PTRACE_CONT, pid, NULL, NULL);
wait(NULL);
}
return 0;
}
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