logf_P fails

[dragondaud]

Exception 3: LoadStoreError: Processor internal physical address or data error during load or store
0x4021ec20: vsnprintf at /Users/igrokhotkov/e/newlib-xtensa/xtensa-lx106-elf/newlib/libc/stdio/../../../.././newlib/libc/stdio/vsnprintf.c line 42
0x401004e4: malloc at C:\Users\daud\Documents\Arduino\hardware\esp8266com\esp8266\cores\esp8266\umm_malloc/umm_malloc.c line 1672
0x4021abc4: operator new[](unsigned int) at C:\Users\daud\Documents\Arduino\hardware\esp8266com\esp8266\cores\esp8266/abi.cpp line 71
0x4021751a: Syslog::vlogf(unsigned short, char const*, __va_list_tag) at C:\Users\daud\Documents\Arduino\libraries\Syslog\src/Syslog.cpp line 38
0x40217568: Syslog::logf(char const*, ...) at C:\Users\daud\Documents\Arduino\libraries\Syslog\src/Syslog.cpp line 38
0x4020d6e3: setup at C:\Users\daud\Documents\Arduino\myClock/myClock.ino line 116

This works as expected:
Serial.printf_P(PSTR("setup: %s, %s, %s, %d, %d \r\n"), location.c_str(), timezone.c_str(), milTime ? "true" : "false", brightness, light);

This does not:
syslog.logf_P(PSTR("setup: %s|%s|%s|%d|%d"), location.c_str(), timezone.c_str(), milTime ? "true" : "false", brightness, light);

My full code is available at https://github.com/dragondaud/myClock

[yunjova]

The function "bool Syslog::vlogf_P(uint16_t pri, PGM_P fmt_P, va_list args)" in file Syslog.cpp has a bug which (probably) is the reason for this failure.

Solution:
Replace "vsnprintf(message, len + 1, fmt_P, args);" inside the if statement with "vsnprintf**### _P**(message, len + 1, fmt_P, args);". (Add "_P" to call the correct function.)

Kind regards