cmake HAVE__VSNPRINTF examples

FujiNetWIFI/fujinet-firmware components_pc/libssh/ConfigureChecks.cmake :203 

check_symbol_exists(_vsnprintf "stdio.h" HAVE__VSNPRINTF)

clibs/cmocka ConfigureChecks.cmake :95 

check_function_exists(_vsnprintf HAVE__VSNPRINTF)

SmartThingsCommunity/st-device-sdk-c test/framework/cmocka/ConfigureChecks.cmake :92 

check_function_exists(_vsnprintf HAVE__VSNPRINTF)