libunwind/test/signal_frame.pass.cpp

   1 // -*- C++ -*-
   2 //===----------------------------------------------------------------------===//
   3 //
   4 // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
   5 // See https://llvm.org/LICENSE.txt for license information.
   6 // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
   7 //
   8 //===----------------------------------------------------------------------===//
   9
  10 // Ensure that functions marked as signal frames are reported as such.
  11
  12 // TODO: Investigate this failure on Apple
  13 // XFAIL: target={{.+}}-apple-{{.+}}
  14
  15 // TODO: Figure out why this fails with Memory Sanitizer.
  16 // XFAIL: msan
  17
  18 // UNSUPPORTED: libunwind-arm-ehabi
  19
  20 // The AIX assembler does not support CFI directives, which
  21 // are necessary to run this test.
  22 // UNSUPPORTED: target={{.*}}-aix{{.*}}
  23
  24 // Windows doesn't generally use CFI directives. However, i686
  25 // mingw targets do use DWARF (where CFI directives are supported).
  26 // UNSUPPORTED: target={{x86_64|arm.*|aarch64}}-{{.*}}-windows-{{.*}}
  27
  28 #undef NDEBUG
  29 #include <assert.h>
  30 #include <stdlib.h>
  31 #include <libunwind.h>
  32
  33 void test() {
  34   asm(".cfi_signal_frame");
  35   unw_cursor_t cursor;
  36   unw_context_t uc;
  37   unw_getcontext(&uc);
  38   unw_init_local(&cursor, &uc);
  39   assert(unw_step(&cursor) > 0);
  40   assert(unw_is_signal_frame(&cursor));
  41 }
  42
  43 int main(int, char**) {
  44   test();
  45   return 0;
  46 }