implicitly continued string constants

[Clark O. Morgan]

I noticed the other day that gcc (version 1.39) does not error
implicitly continued string constants (e.g., string constants that
contain actual newlines).  This surprised me, because I personally
consider such strings to be programming typos, especially given the
alternatives available for continuing long strings (i.e., concatenation
or continuation with an explicit \n).  I have been told that gcc is
ANSI C compatible.

So here's the question, is the following program legal ANSI C?

Script started on Wed May 15 00:43:44 1991
$ cat -n t.c
     1	extern int printf(char *, ...);
     2	
     3	int
     4	main()
     5	{
     6	   printf("junk);
     7	                 string\n");
     8	   return (0);
     9	}
$ gcc -Wall t.c                    <--- No complaints
$ a.out
junk);
                 string
$ exit

script done on Wed May 15 00:44:09 1991


Thanks in advance.