This buffer
char *msgL[]
{
"0123456789",
};
is allocated with 10 characters plus the nul ('\0') at the end. Does your text fit in here?
If not, adjust the buffer.
The buffer should always be bigger than what you expect to put in there or you could 'over fill' it and write over other data at the end. This has unpredictable results, depending on what gets clobbered by the overwrite. C/C++ does no checking for you - this is your responsibility.