[Dev-luatex] Multiple issues with tprint

Marcel Krüger tex at 2krueger.de
Fri Mar 29 09:26:01 CET 2019


 ---- On Fri, 29 Mar 2019 08:13:19 +0100 luigi scarso <luigi.scarso at gmail.com> wrote ----
 > 
 > 
 > On Thu, Mar 28, 2019 at 10:55 PM Marcel Krüger <tex at 2krueger.de> wrote:
 > 
 > \let\3\relax
 > \directlua{
 >   texio.write'\3'% Only to be escaped characters -> valgrind complains about write into unallocated memory
 > 
 >   texio.write_nl''
 > 
 >   for i=1,kpse.var_value'max_print_line'-3 do texio.write'.' end
 >   texio.write'\3' % Here LuaTex writes 2 and not just 1 byte after it's allocated memory area
 > 
 >   for i=1,kpse.var_value'max_print_line'-1 do texio.write'.' end
 >   texio.write'\3' % The line break would fall inside of the escape sequence -> Line limit ignored
 >   for i=1,2*kpse.var_value'max_print_line' do texio.write'.' end % This should normally not fit into one line
 > }
 > \bye
 > 
 > 
 > How do you run valgrind ? Which version  ? Do you compile luatex with standard -O2 ? -- 
 > luigi
 > 

My test were done with

(Arch) Linux, Kernel 5.0.4-arch1-1-ARCH
glibc 2.28-5
valgrind-3.14.0

The tests were done with a debug build (`./build.sh --debug`) a regular build (`./build.sh` w/o further options) and the current TeXLive pretest version.



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