trstring() has \ooo octal printing code, it's buggy

Denys Vlasenko <[email protected]> Wed, 28 Jan 2026 13:06:52 +0100

Newsgroups	org.kernel.vger.dash
Message-ID	<CAK1hOcMsRRQsgp+pyNmui2v+gMx6zFf6nLa89jzeid-AfcKv8w@mail.gmail.com>

Good day,
                                putc('\\', tracefile);
                                putc(*p >> 6 & 03, tracefile);
                                putc(*p >> 3 & 07, tracefile);
                                putc(*p & 07, tracefile);

The last three putc need '0' added to the char value:
they need to print '0...'7' bytes, not 0...7