makeinfo 4.0 crash

[Joseph S. Myers]

On the input file below, I get a segfault from makeinfo version 4.0 (on
i686-pc-linux-gnu, glibc 2.2.1pre2, GCC 2.95.2, no special options when
configuring texinfo).  The crash appears to be inside free() in libc.

#0  chunk_free (ar_ptr=0x40152ae0, p=0x806c3c8) at malloc.c:3080
#1  0x400a47e7 in __libc_free (mem=0x806c3d0) at malloc.c:3054
#2  0x80542f1 in free_and_clear (pointer=0x8065ad4) at makeinfo.c:1435
#3  0x80546ad in read_command () at makeinfo.c:1589
#4  0x8054b15 in reader_loop () at makeinfo.c:1791
#5  0x805708c in execute_string (format=0x8060fd0 "%s") at makeinfo.c:3573
#6  0x8050ede in execute_macro (def=0x806b160) at macro.c:445
#7  0x80546df in read_command () at makeinfo.c:1605
#8  0x8054b15 in reader_loop () at makeinfo.c:1791
#9  0x8054026 in convert_from_loaded_file (name=0xbffff9f1 "t.texi")
    at makeinfo.c:1362
#10 0x8053a83 in convert_from_file (name=0xbffff9f1 "t.texi")
    at makeinfo.c:1191
#11 0x8052e7a in main (argc=2, argv=0xbffff874) at makeinfo.c:678
#12 0x4003aefe in __libc_start_main (main=0x8052518 <main>, argc=2, 
    ubp_av=0xbffff874, init=0x8048fcc <_init>, fini=0x805e724 <_fini>, 
    rtld_fini=0x4000e974 <_dl_fini>, stack_end=0xbffff86c)
    at ../sysdeps/generic/libc-start.c:129

-- 
Joseph S. Myers
address@hidden

\input texinfo

@macro FOO{body}
@smallexample
\body\
@end smallexample
@end macro

@node Top, Foo,, (DIR)
@top Bar

@node Foo
@chapter Foo

@table @emph
@item A
@FOO{
xxxxxxxxxxxxxxxxxxxxxxxxxxxxxx
xxxxxxxxxxxxxxxxxxxxxxxxxxxxxx
}

@item B
@FOO{
xxxxxxxxxxxxxxxxxxxxxxxxxxxxxx
xxxxxxxxxxxxxxxxxxxxxxxxxxxxxx
xxxxxxxxxxxxxxxxxxxxxxxxxxxxxx
xxxxxxxxxxxxxxxxxxxxxxxxxxxxxx
xxxxxxxxxxxxxxxxxxxxxxxxxxxxxx
xxxxxxxxxxxxxxxxxxxxxxxxxxxxxx
xxxxxxxxxxxxxxxxxxxxxxxxxxxxxx
}

@item C
@FOO{
xxxxxxxxxxxxxxxxxxxxxxxxxxxxxx
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xxxxxxxxxxxxxxxxxxxxxxxxxxxxxx
}

@item D
@FOO{
xxxxxxxxxxxxxxxxxxxxxxxxxxxxxx
xxxxxxxxxxxxxxxxxxxxxxxxxxxxxx
}

@item E
@FOO{
xxxxxxxxxxxxxxxxxxxxxxxxxxxxxx
xxxxxxxxxxxxxxxxxxxxxxxxxxxxxx
xxxxxxxxxxxxxxxxxxxxxxxxxxxxxx
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}

@item F
@FOO{
xxxxxxxxxxxxxxxxxxxxxxxxxxxxxx
xxxxxxxxxxxxxxxxxxxxxxxxxxxxxx
}

@item G
@FOO{
xxxxxxxxxxxxxxxxxxxxxxxxxxxxxx
xxxxxxxxxxxxxxxxxxxxxxxxxxxxxx
xxxxxxxxxxxxxxxxxxxxxxxxxxxxxx
xxxxxxxxxxxxxxxxxxxxxxxxxxxxxx
xxxxxxxxxxxxxxxxxxxxxxxxxxxxxx
xxxxxxxxxxxxxxxxxxxxxxxxxxxxxx
xxxxxxxxxxxxxxxxxxxxxxxxxxxxxx
}

@item H
@FOO{
xxxxxxxxxxxxxxxxxxxxxxxxxxxxxx
xxxxxxxxxxxxxxxxxxxxxxxxxxxxxx
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xxxxxxxxxxxxxxxxxxxxxxxxxxxxxx
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xxxxxxxxxxxxxxxxxxxxxxxxxxxxxx
xxxxxxxxxxxxxxxxxxxxxxxxxxxxxx
xxxxxxxxxxxxxxxxxxxxxxxxxxxxxx
xxxxxxxxxxxxxxxxxxxxxxxxxxxxxx
xxxxxxxxxxxxxxxxxxxxxxxxxxxxxx
}

@item I
@FOO{
xxxxxxxxxxxxxxxxxxxxxxxxxxxxxx
xxxxxxxxxxxxxxxxxxxxxxxxxxxxxx
xxxxxxxxxxxxxxxxxxxxxxxxxxxxxx
xxxxxxxxxxxxxxxxxxxxxxxxxxxxxx
xxxxxxxxxxxxxxxxxxxxxxxxxxxxxx
xxxxxxxxxxxxxxxxxxxxxxxxxxxxxx
xxxxxxxxxxxxxxxxxxxxxxxxxxxxxx
xxxxxxxxxxxxxxxxxxxxxxxxxxxxxx
xxxxxxxxxxxxxxxxxxxxxxxxxxxxxx
}

@item J
@FOO{
xxxxxxxxxxxxxxxxxxxxxxxxxxxxxx
}

@item K
@FOO{
xxxxxxxxxxxxxxxxxxxxxxxxxxxxxx
xxxxxxxxxxxxxxxxxxxxxxxxxxxxxx
xxxxxxxxxxxxxxxxxxxxxxxxxxxxxx
xxxxxxxxxxxxxxxxxxxxxxxxxxxxxx
xxxxxxxxxxxxxxxxxxxxxxxxxxxxxx
}

@item L
@FOO{
xxxxxxxxxxxxxxxxxxxxxxxxxxxxxx
}

@item M
@FOO{
xxxxxxxxxxxxxxxxxxxxxxxxxxxxxx
}

@item N
@FOO{
xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx
xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx
xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx
xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx
xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx

xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx
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xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx
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xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx
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xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx
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xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx
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xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx
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xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx
xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx
}

@end table