void BufferedStackTrace::UnwindFast(uptr pc, uptr bp, uptr stack_top,
uptr stack_bottom, u32 max_depth) {
- const uptr kPageSize = GetPageSizeCached();
+ CHECK_NE(stack_bottom, 0);
+ CHECK_GT(stack_top, stack_bottom);
CHECK_GE(max_depth, 2);
+ const uptr kPageSize = GetPageSizeCached();
trace_buffer[0] = pc;
size = 1;
if (stack_top < 4096) return; // Sanity check for stack top.
void Print() const;
static bool WillUseFastUnwind(bool request_fast_unwind) {
+ static_assert(SANITIZER_CAN_FAST_UNWIND || SANITIZER_CAN_SLOW_UNWIND,
+ "Neither fast nor slow unwinder is supported");
if (!SANITIZER_CAN_FAST_UNWIND)
return false;
- else if (!SANITIZER_CAN_SLOW_UNWIND)
+ if (!SANITIZER_CAN_SLOW_UNWIND)
return true;
return request_fast_unwind;
}
void BufferedStackTrace::UnwindFast(uptr pc, uptr bp, uptr stack_top,
uptr stack_bottom, u32 max_depth) {
- const uptr kPageSize = GetPageSizeCached();
+ CHECK_NE(stack_bottom, 0);
+ CHECK_GT(stack_top, stack_bottom);
CHECK_GE(max_depth, 2);
+ const uptr kPageSize = GetPageSizeCached();
trace_buffer[0] = pc;
size = 1;
if (stack_top < 4096) return; // Sanity check for stack top.
trace_buffer[0] = pc;
}
-void BufferedStackTrace::UnwindSlow(uptr pc, void *context,
- u32 max_depth) {
- CHECK_NE(context, nullptr);
+void BufferedStackTrace::UnwindSlow(uptr pc, void *context, u32 max_depth) {
+ CHECK(context);
+ CHECK_GE(max_depth, 2);
UNREACHABLE("signal context doesn't exist");
}
#endif // SANITIZER_CAN_SLOW_UNWIND
trace_buffer[0] = pc;
}
-void BufferedStackTrace::UnwindSlow(uptr pc, void *context,
- u32 max_depth) {
+void BufferedStackTrace::UnwindSlow(uptr pc, void *context, u32 max_depth) {
+ CHECK(context);
CHECK_GE(max_depth, 2);
if (!unwind_backtrace_signal_arch) {
UnwindSlow(pc, max_depth);
PopStackFrames(pc_location);
}
-void BufferedStackTrace::UnwindSlow(uptr pc, void *context,
- u32 max_depth) {
+void BufferedStackTrace::UnwindSlow(uptr pc, void *context, u32 max_depth) {
+ CHECK(context);
+ CHECK_GE(max_depth, 2);
CONTEXT ctx = *(CONTEXT *)context;
STACKFRAME64 stack_frame;
memset(&stack_frame, 0, sizeof(stack_frame));