Index: libunwind/src/UnwindCursor.hpp =================================================================== --- libunwind/src/UnwindCursor.hpp +++ libunwind/src/UnwindCursor.hpp @@ -1991,7 +1991,10 @@ template void UnwindCursor::getInfo(unw_proc_info_t *info) { - *info = _info; + if (_unwindInfoMissing) + memset(info, 0, sizeof(*info)); + else + *info = _info; } template Index: libunwind/test/libunwind_01.pass.cpp =================================================================== --- libunwind/test/libunwind_01.pass.cpp +++ libunwind/test/libunwind_01.pass.cpp @@ -35,8 +35,29 @@ test2(j, k); } +void test_no_info() { + unw_context_t context; + unw_getcontext(&context); + + unw_cursor_t cursor; + unw_init_local(&cursor, &context); + + unw_proc_info_t info; + int ret = unw_get_proc_info(&cursor, &info); + if (ret != UNW_ESUCCESS) + abort(); + + // Set the IP to an address clearly outside any function. + unw_set_reg(&cursor, UNW_REG_IP, (unw_word_t)&context); + + ret = unw_get_proc_info(&cursor, &info); + if (ret != UNW_ENOINFO) + abort(); +} + int main() { test1(1); test2(1, 2); test3(1, 2, 3); + test_no_info(); }