use calloc in get_line() when allocating line to ensure it is fully initialized,
fixes a later uninitialized value in copy_param() (FreeBSD #193499).
PR: 193499
Submitted by: Thomas E. Dickey <tom@invisible-island.net>
bison, keeping full compatibility with our previous yacc implementation.
Also bring the ability to create reentrant parser
This fix bin/140309 [1]
PR: bin/140309 [1]
Submitted by: Philippe Pepiot <ksh@philpep.org> [1]
Approved by: des (mentor)
MFC after: 1 month