Weaving pdftex.web fails

Hello,

I tried to weave pdftex.web (output below) from texlive-20170520-source and
get following errors. The result is a merley 84 page PDF wit just the index.

What is going wrong here?

Knuth's tex.web works as expected.

"""""""""""""
pdftexdir$ weave pdftex.web
This is WEAVE, Version 4.4 (TeX Live 2016/Debian)
*1*17*25*38*54*72*99*110*128*133*151*180*191*217*221*225*229*238*274*290*311*319*322*343*354*388*428*490*513*537*565*610*619*672*679*691*694*703*727*813*853*872*892*941*986*1035*1065*1074*1093*1116*1141*1154*1203*1230*1311*1383*1474*1507*1515*1517*1642*1861*1862
Writing the output
file...*1*17*25*38*54*72*99*110*128*133*151*180*191*217*221*225*229*238*274*290*311*319*322*343*354*388*428*490*513*537*565*610*619*672*679*691*694*703*727*813*853*872*892*941*986*1035*1065*1074*1093*1116*1141*1154*1203*1230*1311*1383*1474*1507*1515*1517*1642
! Pascal text in section name didn't end:
<Set the value of |b| to the badness of the last line for stretching,
compute the corresponding |fit_class|, and |goto found||>
! Pascal text in section name didn't end:
<Set the value of |b| to the badness of the last line for shrinking,
compute the corresponding |fit_class|, and |goto found||>
! Pascal text in section name didn't end:
<Set the value of |b| to the badness of the last line for stretching,
compute the corresponding |fit_class|, and |goto found||>
! Pascal text in section name didn't end:
<Set the value of |b| to the badness of the last line for shrinking,
compute the corresponding |fit_class|, and |goto found||> *1861*1862
Writing the index...
! Pascal text in section name didn't end:
<Set the value of |b| to the badness of the last line for shrinking,
compute the corresponding |fit_class|, and |goto found||>
! Pascal text in section name didn't end:
<Set the value of |b| to the badness of the last line for stretching,
compute the corresponding |fit_class|, and |goto found||> Done.
(Pardon me, but I think I spotted something wrong.)
pdftexdir$
"""""""""""""

Kind regards, Axel