[Bug python/16547] New: GDB crashes on calling Python has_line() or line()

["jan.kratochvil at redhat dot com" <sourceware-bugzilla at sourceware dot org>]

https://sourceware.org/bugzilla/show_bug.cgi?id=16547

            Bug ID: 16547
           Summary: GDB crashes on calling Python has_line() or line()
           Product: gdb
           Version: 7.7
            Status: NEW
          Severity: normal
          Priority: P2
         Component: python
          Assignee: unassigned at sourceware dot org
          Reporter: jan.kratochvil at redhat dot com
            Target: x86_64-redhat-linux-gnu

CFLAGS="-O2 -g -pipe -Wall -Wp,-D_FORTIFY_SOURCE=2 -fexceptions
-fstack-protector-strong --param=ssp-buffer-size=4
-grecord-gcc-switches  -m64 -mtune=generic" LDFLAGS="-static-libstdc++
-static-libgcc -Wl,-z,relro" ./configure
--with-system-readline;make

(ulimit -c unlimited;/usr/bin/runtest gdb.python/py-linetable.exp)

particularly:

cd gdb/testsuite; ../gdb -data-directory ../data-directory -ex start -ex
'python print gdb.selected_frame().find_sal().symtab.linetable().has_line(20)'
gdb.python/py-linetable
<segfault>

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