Core: fixed segfault with too large bucket sizes (ticket #1806). To save memory hash code uses u_short to store resulting bucket sizes, so maximum bucket size is limited to 65536 minus ngx_cacheline_size (larger values will be aligned to 65536 which will overflow u_short). However, there were no checks to enforce this, and using larger bucket sizes resulted in overflows and segmentation faults. Appropriate safety checks to enforce this added to ngx_hash_init().

# Copyright (C) Nginx, Inc.


if [ $USE_THREADS = YES ]; then

    if [ "$NGX_PLATFORM" = win32 ]; then
        cat << END

$0: --with-threads is not supported on Windows

END
        exit 1
    fi

    have=NGX_THREADS . auto/have
    CORE_DEPS="$CORE_DEPS $THREAD_POOL_DEPS"
    CORE_SRCS="$CORE_SRCS $THREAD_POOL_SRCS"
    CORE_LIBS="$CORE_LIBS -lpthread"
    NGX_LIBPTHREAD="-lpthread"
fi