On Tue, 6 Feb 2024 00:16:31 +0000 J Carter <jordanc.car...@outlook.com> wrote:
> Hello, > > On Mon, 5 Feb 2024 23:24:39 +0200 > Clima Gabriel <clima.gabrielph...@gmail.com> wrote: > > > Hello everyone, > > > > (the code is probably clearer and attached below) > > This function modifies what ngx_connection_t->data points to. > > ngx_connection_t->data is initially *ngx_http_connection_t. > > The *ngx_http_connection_t is assigned to > > ngx_http_v3_session_t->http_connection > > And the *ngx_http_v3_session_t assigned to ngx_connection_t->data. > > > > Result: before ngx_connection_t->data is *ngx_http_connection_t > > after ngx_connection_t->data is *ngx_http_v3_session_t > > In C, a pointer to struct can be cast to a pointer to the first member > of that struct, as there is no padding before the first member per the > standard. > > The first member of ngx_http_v3_session_t is *ngx_http_connection_t. *Sorry typo here - first member is ngx_http_connection_t of course. > > Here is the commit where this was implemented. > > https://mailman.nginx.org/pipermail/nginx-devel/2023-September/BWH23FTMRUWCUZSNKXJJXEEN76ZYOK62.html > > [...] _______________________________________________ nginx mailing list nginx@nginx.org https://mailman.nginx.org/mailman/listinfo/nginx