3.0 Beta documentation about ntpclient HOT 7 CLOSED

[WiFi-event] event: 4
Connected to testnet. Asking for IP address.
[WiFi-event] event: 7
Got IP: 192.168.0.27
Connected: yes
NTP request Sent
assertion "pbuf_free: p->ref > 0" failed: file "/Users/ficeto/Desktop/ESP32/ESP32/esp-idf-public/components/lwip/lwip/src/core/pbuf.c", line 765, function: pbuf_free
abort() was called at PC 0x400d8ce3 on core 1

Backtrace: 0x4008c818:0x3ffc8cc0 0x4008ca49:0x3ffc8ce0 0x400d8ce3:0x3ffc8d00 0x400f3903:0x3ffc8d30 0x400d3c23:0x3ffc8d50 0x400d3c73:0x3ffc8de0 0x400887b5:0x3ffc8e10

The exception decoder reports:

Decoding 7 results
0x4008c818: invoke_abort at /Users/ficeto/Desktop/ESP32/ESP32/esp-idf-public/components/esp32/panic.c line 707
0x4008ca49: abort at /Users/ficeto/Desktop/ESP32/ESP32/esp-idf-public/components/esp32/panic.c line 707
0x400d8ce3: __assert_func at /Users/ivan/e/newlib_xtensa-2.2.0-bin/newlib_xtensa-2.2.0/xtensa-esp32-elf/newlib/libc/stdlib/../../../.././newlib/libc/stdlib/assert.c line 63 (discriminator 8)
0x400f3903: pbuf_free at /Users/ficeto/Desktop/ESP32/ESP32/esp-idf-public/components/lwip/lwip/src/core/pbuf.c line 1331
0x400d3c23: AsyncUDP::_recv(udp_pcb*, pbuf*, ip_addr const*, unsigned short, netif*) at C:\Users\William\AppData\Local\Arduino15\packages\esp32\hardware\esp32\1.0.2\libraries\AsyncUDP\src/AsyncUDP.cpp line 875
0x400d3c73: AsyncUDP::_s_recv(void*, udp_pcb*, pbuf*, ip_addr const*, unsigned short, netif*) at C:\Users\William\AppData\Local\Arduino15\packages\esp32\hardware\esp32\1.0.2\libraries\AsyncUDP\src/AsyncUDP.cpp line 875
:  (inlined by) _udp_task at C:\Users\William\AppData\Local\Arduino15\packages\esp32\hardware\esp32\1.0.2\libraries\AsyncUDP\src/AsyncUDP.cpp line 137
0x400887b5: vPortTaskWrapper at /Users/ficeto/Desktop/ESP32/ESP32/esp-idf-public/components/freertos/port.c line 355 (discriminator 1)

$ cat test.cpp
void some();

int main(int argc, char** argv) {
    some();
}
$ g++ -o test test.cpp
/tmp/ccuzaFSD.o: In function `main':
test.cpp:(.text+0x10): undefined reference to `some()'
collect2: error: ld returned 1 exit status

Compiling library "NtpClient"
xtensa-esp32-elf-g++ ...long-buildflags-string... ".../Arduino/libraries/NtpClient/src/NTPClientLib.cpp" -o ".../arduino_build_134966/libraries/NtpClient/NTPClientLib.cpp.o"