Windows 10: Invalid parameter passed to C runtime function.

[bubbasnmp]

The error/warning message gets logged to the VS Code debug log.
Would be nice to have a clean log before it gets to whatever I've broken in my code. :-)

ares_init.c: static int get_DNS_AdaptersAddresses(char **outptr)

/* Usually this call suceeds with initial buffer size */
res = (*ares_fpGetAdaptersAddresses) (AF_UNSPEC, AddrFlags, NULL,
ipaa, &ReqBufsz);

Invalid parameter passed to C runtime function.

---

cares.dll!get_DNS_AdaptersAddresses(char * * outptr) Line 1139 (c:\vcpkg\buildtrees\c-ares\src\res-1_17_1-7723edf4cb.clean\src\lib\ares_init.c:1139)
[Inline Frame] cares.dll!get_DNS_Windows(char * *) Line 1322 (c:\vcpkg\buildtrees\c-ares\src\res-1_17_1-7723edf4cb.clean\src\lib\ares_init.c:1322)
cares.dll!init_by_resolv_conf(ares_channeldata * channel) Line 1457 (c:\vcpkg\buildtrees\c-ares\src\res-1_17_1-7723edf4cb.clean\src\lib\ares_init.c:1457)
cares.dll!ares_init_options(ares_channeldata * * channelptr, ares_options * options, int optmask) Line 204 (c:\vcpkg\buildtrees\c-ares\src\res-1_17_1-7723edf4cb.clean\src\lib\ares_init.c:204)
libwireshark.dll!host_name_lookup_init() Line 3141 (c:\Development\wireshark\epan\addr_resolv.c:3141)
libwireshark.dll!epan_init(void(*)(register_action_e, const char *, void *) cb, void * client_data, int load_plugins) Line 248 (c:\Development\wireshark\epan\epan.c:248)
Wireshark.exe!main(int argc, char * * qt_argv) Line 794 (c:\Development\wireshark\ui\qt\main.cpp:794)
Wireshark.exe!WinMain(HINSTANCE__ * __formal, HINSTANCE__ * __formal, char * __formal, int __formal) Line 97 (c:\Users\qt\work\qt\qtbase\src\winmain\qtmain_win.cpp:97)
[Inline Frame] Wireshark.exe!invoke_main() Line 102 (d:\a01\_work\9\s\src\vctools\crt\vcstartup\src\startup\exe_common.inl:102)
Wireshark.exe!__scrt_common_main_seh() Line 288 (d:\a01\_work\9\s\src\vctools\crt\vcstartup\src\startup\exe_common.inl:288)
kernel32.dll!00007ffb79707974() (Unknown Source:0)
ntdll.dll!00007ffb7990a2d1() (Unknown Source:0)

[bradh352]

What parameter are you saying is wrong?

[bubbasnmp]

That's the message from Windows / VS Code.
If there is data I can collect to help diagnose this, glad to do it.

Ha! - I should have googled more:
https://developercommunity.visualstudio.com/t/getadaptersaddresses-invalid-parameter-passed-to-c/363323

[bradh352]

That's what, a stack trace from a crash?

Can you get any more information?

We do have appveyor running automated tests on windows, we don't get any crashes, and this seems to be in initialization code which is the first thing called. What build system are you using to compile with windows (cmake, nmake makefiles, etc)?

[bradh352]

Also, was ares_library_init() called before this?

[bubbasnmp]

I was testing on a Win10 1809 VM.
Moving to a newer win10 now and will report back (web link says fixed in win 10 1909)
I think I just stumbled across a Microsoft thing that hopefully is fixed.

[bubbasnmp]

Clean load on win10 20H2.
Sorry for the noise here - closing issue.