[Bug-readline] sigsegv in terminal.c function get_term_capabilities()

[Dennis Clarke]

This has been tricky to isolate but after building and trying bash 5.0.2
and then bash 4.4.23 I get the exact same sigsegv in the same place with
both :

address@hidden dbx 
/usr/local/build/bash-4.4.18-023_SunOS5.10_sparc64vii+.001/bash
Reading bash
Reading ld.so.1
Reading libreadline.so.8
Reading libhistory.so.8
Reading libcurses.so.1
Reading libintl.so.8.1.5
Reading libiconv.so.2.6.0
Reading libc.so.1
Reading libsocket.so.1
Reading libnsl.so.1
Reading libdl.so.1
(dbx) run 

Running: bash
(process id 19243)
Reading libc_psr.so.1
signal SEGV (no mapping at the fault address) in strcpy at 
0xffffffff7e13c2e8
0xffffffff7e13c2e8: strcpy+0x00e8:      ldx      [%o2 + %o3], %o1
Current function is get_term_capabilities
  430       *(tc_strings[i].tc_value) = tgetstr ((char 
*)tc_strings[i].tc_var, bp);
(dbx)

Well then the whole terminal session is dead and I can not do much of
anything there.   Setting a breakpoint at 429 doesn't help as, again,
the terminal is now a dead brick.

So curious what steps to take here?



--
Dennis Clarke
RISC-V/SPARC/PPC/ARM/CISC
UNIX and Linux spoken
GreyBeard and suspenders optional