The variable `block` (instace of `struct block`) is
allocated on the stack without being initialized, i.e. its
member `prev` points to nowhere. This causes a segmentation
fault on my machine on the binding of "prev_hash" on running
`wallet_block_add`, as the following core-dump analysis
shows:
$ egdb ./wallet/test/run-wallet ./run-wallet.core
[...]
Core was generated by `run-wallet'.
Program terminated with signal SIGSEGV, Segmentation fault.
---Type <return> to continue, or q <return> to quit---
#0 0x000008f67a04b660 in memcpy (dst0=<optimized out>, src0=0x100007f8c, length=32) at /usr/src/lib/libc/string/memcpy.c:97
97 TLOOP1(*dst++ = *src++);
(gdb) bt
#0 0x000008f67a04b660 in memcpy (dst0=<optimized out>, src0=0x100007f8c, length=32) at /usr/src/lib/libc/string/memcpy.c:97
#1 0x000008f73e838f60 in sqlite3VdbeMemSetStr () from /usr/local/lib/libsqlite3.so.37.12
#2 0x000008f73e83cb11 in bindText () from /usr/local/lib/libsqlite3.so.37.12
#3 0x000008f44bc91345 in db_sqlite3_query (stmt=0x8f6845bf028) at wallet/db_sqlite3.c:77
#4 0x000008f44bc91122 in db_sqlite3_exec (stmt=0x8f6845bf028) at wallet/db_sqlite3.c:110
#5 0x000008f44bcbb3b2 in db_exec_prepared_v2 (stmt=0x8f6845bf028) at ./wallet/db.c:2055
#6 0x000008f44bcc6890 in wallet_block_add (w=0x8f688b5bba8, b=0x7f7ffffca788) at ./wallet/wallet.c:3556
#7 0x000008f44bce2607 in test_wallet_outputs (ld=0x8f6a35a7828, ctx=0x8f6a35c0268) at wallet/test/run-wallet.c:1104
#8 0x000008f44bcddec0 in main (argc=1, argv=0x7f7ffffcaaf8) at wallet/test/run-wallet.c:1930
Fix by explicitely setting the whole structure to zero.
[ Rebuilt generated files, too --RR ]
48473eb3e9