| // RUN: %clangxx_asan -O0 %s -o %t && %t |
| // RUN: %clangxx_asan -DPOSITIVE -O0 %s -o %t && %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; |
| } |