1.18 mm: infinite loop with large vs

[W M Brelsford]

                           Groff Bug Report

GROFF VERSION: 1.18
 mm version: .\" $Id: m.tmac,v 2.14 2002/06/07 08:41:34 jhaegg Exp $

MACHINE: IBM-compatible PC

OS: Linux 2.4.18-14 (RedHat 8.0)

COMPILER: none (used groff-1.18-6 rpm)

INPUT FILES: foo.tr -- 4 lines:

        .S 27 29
        .SP
        foo
        .SK

COMMAND LINE: groff -mm <foo.tr >foo.ps         (groff version of mm)

DESCRIPTION OF INCORRECT BEHAVIOUR:

   foo.tr:4: fatal error: input stack limit exceeded (probable infinite loop)

 and foo.ps contains the following for pages 1-199:

        %%Page: 1 1
        %%BeginPageSetup
        BP
        %%EndPageSetup
        /F0 27/address@hidden SF 6.75(-1)249.345 116 S(99 -)-6.75 E 0 Cg EP

 Happens whenever vertical spacing is "too big".  With ".S 27 60"
 ".SP" can be omitted -- only the "foo" line is needed to cause
 looping.

 Worked OK in 1.17.2 (RedHat 7.3).

 (If this is fixed in a newer version (1.18.1 or 1.19), how do I get
 it?  The groff-*.tar.gz files don't seem to include tmac/m.tmac.)

SUGGESTED FIX [optional]: