On Wed, 03 Jun 2015 10:25:20 +0200, Richard Biener wrote:
> gdb 7.9, python 2.7.6

attaching a fix; I do not know much Python so check it, please.

OK for check-in?

I have found it reproducible by :
	gdb -ex 'source /home/jkratoch/redhat/gcchead/gcc/gdbhooks.py' -ex 'b *0xec25b0' -ex r -ex 'set python print-stack full' -ex 'p *(stmt_vec_info)$r12' --args /home/jkratoch/redhat/gcchead-build/gcc/cc1plus ~/t/sigtest.C -o /dev/null -Wall -g -O3

0xec25b0=
Breakpoint 1, free_stmt_vec_info (stmt=<gimple_debug 0x7ffff1635b80>) at /home/jkratoch/redhat/gcchead/gcc/tree-vect-stmts.c:7754
7754	  free (stmt_info);


Jan