session->drop() SEGFAULT crash while recreating index

#include <assert.h>

#include <stdio.h>

#include <stdlib.h>

#include <string.h>

#include <wiredtiger.h>

#define WT_HOME "db"

#define WT_CALL(call) \

    do { \

        const int __rc = call; \

        if (__rc != 0) { \

            fprintf(stderr, # call " at (%s:%d) failed: %s [%d]\n", __FILE__, __LINE__, wiredtiger_strerror(__rc), __rc); \

            exit(EXIT_FAILURE); \

        } \

    } while (0)

static int

me(WT_EXTRACTOR *extractor, WT_SESSION *session,

    const WT_ITEM *key, const WT_ITEM *value,

    WT_CURSOR *result_cursor)

{

    //some extractor

    //it's not called in this program

    exit(1);

}

static WT_EXTRACTOR my_extractor = {me, NULL, NULL};

int

main(void)

{

    WT_CONNECTION *conn;

    WT_SESSION *session;

    WT_CURSOR *cursor;

    const char* idx1 = "index:main:aab";

    const char* idx2 = "index:main:aaa"; // "aaa" < "aab" by strcmp

    assert(system("rm -rf \"" WT_HOME "\" && mkdir \"" WT_HOME "\"") == 0);

    WT_CALL(wiredtiger_open(WT_HOME, NULL, "create", &conn));

    WT_CALL(conn->open_session(conn, NULL, NULL, &session));

    WT_CALL(session->create(session, "table:main", "columns=(k,v)"));

    WT_CALL(conn->add_extractor(conn, "ex1", &my_extractor, NULL));

    WT_CALL(conn->add_extractor(conn, "ex2", &my_extractor, NULL));

    //create both indexes

    WT_CALL(session->create(session, idx1, "extractor=ex1,key_format=u"));

    WT_CALL(session->create(session, idx2, "extractor=ex2,key_format=u"));

    //recreate index 1

    WT_CALL(session->drop(session, idx1, "force=true"));

    WT_CALL(session->create(session, idx1, "extractor=ex1,key_format=u"));

    //recreate index 2

    WT_CALL(session->drop(session, idx2, "force=true")); //crash

    WT_CALL(session->create(session, idx2, "extractor=ex2,key_format=u"));

    WT_CALL(conn->close(conn, NULL));

    return 0;

}

Program received signal SIGSEGV, Segmentation fault.

__wt_schema_get_index (session=0x7ffff290b900, uri=0x4016c6 "index:main:aaa", quiet=1, tablep=0x7fffffffde30, indexp=0x7fffffffde10)

    at /wiredtiger/2.6.1/src/src/schema/schema_open.c:572

572                     if (strcmp(idx->name, uri) == 0) {

#0  __wt_schema_get_index (session=0x7ffff290b900, uri=0x4016c6 "index:main:aaa", quiet=1, tablep=0x7fffffffde30, indexp=0x7fffffffde10)

    at /wiredtiger/2.6.1/src/src/schema/schema_open.c:572

#1  0x00007ffff47ba780 in __drop_index (session=0x7ffff290b900, uri=0x4016c6 "index:main:aaa", cfg=<optimized out>, force=<optimized out>)

    at /wiredtiger/2.6.1/src/src/schema/schema_drop.c:88

#2  __wt_schema_drop (session=0x7ffff290b900, uri=0x4016c6 "index:main:aaa", cfg=0x7fffffffde70)

    at /wiredtiger/2.6.1/src/src/schema/schema_drop.c:182

#3  0x00007ffff47c40f7 in __session_drop (wt_session=0x7ffff290b900, uri=0x4016c6 "index:main:aaa", config=<optimized out>)

    at /wiredtiger/2.6.1/src/src/session/session_api.c:530

#4  0x00000000004013d9 in main () at main.cpp:64

table->nindices > 0

table->indices[i] == NULL

strcmp(idx1, idx2) > 0