yamt commented on pull request #5283:
URL: https://github.com/apache/incubator-nuttx/pull/5283#issuecomment-1018170293
FYI, sim:cxxtest with a few debug options enabled fails like the following.
```
nuttx was compiled with optimization - stepping may behave oddly; variables
may not be available.
Process 85832 stopped
* thread #1, queue = 'com.apple.main-thread', stop reason = EXC_BAD_ACCESS
(code=1, address=0xffffffffffffffe8)
frame #0: 0x0000000100011fc6 nuttx`std::ios_base::ios_base() [inlined]
std::ios_base::Init::Init(this=<unavailable>) at ios.cpp:96:4 [opt]
93 #ifdef __UCLIBCXX_SUPPORT_CERR__
94 _cerr_filebuf.fp = stderr;
95 _cerr_filebuf.openedFor = ios_base::out;
-> 96 cerr.mformat |= ios_base::unitbuf;
97 #endif
98 #ifdef __UCLIBCXX_SUPPORT_CLOG__
99 _clog_filebuf.fp = stderr;
Target 0: (nuttx) stopped.
(lldb)
(lldb) bt
* thread #1, queue = 'com.apple.main-thread', stop reason = EXC_BAD_ACCESS
(code=1, address=0xffffffffffffffe8)
* frame #0: 0x0000000100011fc6 nuttx`std::ios_base::ios_base() [inlined]
std::ios_base::Init::Init(this=<unavailable>) at ios.cpp:96:4 [opt]
frame #1: 0x0000000100011f78 nuttx`std::ios_base::ios_base() [inlined]
std::ios_base::Init::Init(this=<unavailable>) at ios.cpp:87:36 [opt]
frame #2: 0x0000000100011f78
nuttx`std::ios_base::ios_base(this=<unavailable>) at ios:158:5 [opt]
frame #3: 0x000000010001d96c nuttx`_GLOBAL__sub_I_ios.cpp [inlined]
std::basic_ios<char, std::char_traits<char> >::basic_ios(this=<unavailable>,
sb=0x0000000100024fc0) at ios:345:24 [opt]
frame #4: 0x000000010001d960 nuttx`_GLOBAL__sub_I_ios.cpp [inlined]
std::basic_ostream<char, std::char_traits<char>
>::basic_ostream(this=<unavailable>, sb=0x0000000100024fc0) at ostream:57:6
[opt]
frame #5: 0x000000010001d960 nuttx`_GLOBAL__sub_I_ios.cpp [inlined]
__cxx_global_var_init.4 at ios.cpp:62:22 [opt]
frame #6: 0x000000010001d960 nuttx`_GLOBAL__sub_I_ios.cpp at ios.cpp:0
[opt]
frame #7: 0x00000001000032e5 nuttx`macho_call_saved_init_funcs + 101
frame #8: 0x00000001000099f2 nuttx`cxx_initialize at
cxx_initialize_macho.c:56:7 [opt]
frame #9: 0x00000001000099ce
nuttx`nxtask_startup(entrypt=(nuttx`::cxxtest_main(int, char **) at
cxxtest_main.cxx:218), argc=1, argv=0x0000000101001540) at task_startup.c:64:3
[opt]
frame #10: 0x00000001000076e6 nuttx`nxtask_start at task_start.c:130:7
[opt]
(lldb)
(lldb) p cerr
warning: `this' is not accessible (substituting 0)
(std::ostream) $0 = {
std::basic_ios<char, std::char_traits<char> > = {
std::ios_base = (mLocale = std::locale @ 0x0000600001525960, mformat =
0, mstate = '\0', mmode = '\0', mdir = '\0', mprecision = 0, mwidth = 0, mInit
= std::ios_base::Init @ 0x0000600001525978)
fill_char = '\0'
mtied = nullptr
mstreambuf = nullptr
throw_mask = '\0'
}
}
(lldb)
```
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