[PATCH 3 of 3] Modules compatibility: added QUIC to signature (ticket #2539)

[Sergey Kandaurov]

> On 11 Sep 2023, at 15:30, Roman Arutyunyan <arut at nginx.com> wrote:
> 
> # HG changeset patch
> # User Roman Arutyunyan <arut at nginx.com>
> # Date 1694088909 -14400
> #      Thu Sep 07 16:15:09 2023 +0400
> # Node ID 766e9a5771e20cdb3ec41b8001b065ee299ec7ea
> # Parent  9ee4158b9d3fa41e647b772e707c29b3e4cb77b5
> Modules compatibility: added QUIC to signature (ticket #2539).
> 
> Enabling QUIC changes ngx_connection_t layout, which is why it should be
> added to the signature.
> 

There are several spare values, such as NGX_MODULE_SIGNATURE_9,
unused since initial dynamic modules support in 85dea406e18f.
They could be reused without introducing more signature points.

> diff --git a/src/core/ngx_module.h b/src/core/ngx_module.h
> --- a/src/core/ngx_module.h
> +++ b/src/core/ngx_module.h
> @@ -191,12 +191,18 @@
> #define NGX_MODULE_SIGNATURE_33  "0"
> #endif
> 
> -#if (NGX_COMPAT)
> +#if (NGX_QUIC || NGX_COMPAT)
> #define NGX_MODULE_SIGNATURE_34  "1"
> #else
> #define NGX_MODULE_SIGNATURE_34  "0"
> #endif
> 
> +#if (NGX_COMPAT)
> +#define NGX_MODULE_SIGNATURE_35  "1"
> +#else
> +#define NGX_MODULE_SIGNATURE_35  "0"
> +#endif
> +
> #define NGX_MODULE_SIGNATURE                                                  \
>     NGX_MODULE_SIGNATURE_0 NGX_MODULE_SIGNATURE_1 NGX_MODULE_SIGNATURE_2      \
>     NGX_MODULE_SIGNATURE_3 NGX_MODULE_SIGNATURE_4 NGX_MODULE_SIGNATURE_5      \
> @@ -209,7 +215,7 @@
>     NGX_MODULE_SIGNATURE_24 NGX_MODULE_SIGNATURE_25 NGX_MODULE_SIGNATURE_26   \
>     NGX_MODULE_SIGNATURE_27 NGX_MODULE_SIGNATURE_28 NGX_MODULE_SIGNATURE_29   \
>     NGX_MODULE_SIGNATURE_30 NGX_MODULE_SIGNATURE_31 NGX_MODULE_SIGNATURE_32   \
> -    NGX_MODULE_SIGNATURE_33 NGX_MODULE_SIGNATURE_34
> +    NGX_MODULE_SIGNATURE_33 NGX_MODULE_SIGNATURE_34 NGX_MODULE_SIGNATURE_35
> 
> 
> #define NGX_MODULE_V1                                                         \

-- 
Sergey Kandaurov