[Octave-bug-tracker] [bug #50068] Segfault, when eval_string is used in interpreter embedded mode

[Mike Miller]

Follow-up Comment #3, bug #50068 (project octave):

I agree that these examples, and my own tests, modified from the provided
embedded.cc boilerplate example, succeed with Octave 4.0.x but fail on the
default branch. I don't have a working 4.2 to test at the moment, but I expect
it is similar to default at this point.

The segfault occurs at


Thread 1 "embedded" received signal SIGSEGV, Segmentation fault.
0x00007ffff6e69aea in octave::application::interactive () at
../libinterp/octave.cc:362
362         interpreter *interp = instance->m_interpreter;
(gdb) bt
#0  0x00007ffff6e69aea in octave::application::interactive () at
../libinterp/octave.cc:362
#1  0x00007ffff739f22b in octave::base_lexer::reset (this=0x555555dc4bc0) at
../libinterp/parse-tree/lex.ll:2327
#2  0x00007ffff73ad1c4 in octave::base_parser::reset
(address@hidden) at libinterp/parse-tree/oct-parse.yy:2161
#3  0x00007ffff73b77bf in eval_string (eval_str="who",
address@hidden, address@hidden: 0,
address@hidden) at libinterp/parse-tree/oct-parse.yy:5058
#4  0x00007ffff73b7d40 in eval_string (eval_str="who", silent=<optimized out>,
address@hidden: 0) at libinterp/parse-tree/oct-parse.yy:5121
#5  0x00005555555563a8 in main () at embedded.cc:23


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