qapi_enum_parse() uses the Error type which is
declared in "qapi/error.h". Include "qapi/error.h"
in order to avoid:

  include/qapi/util.h:27:30: error: unknown type name 'Error'
                    int def, Error **errp);
                             ^

Note we include it after the QEnumLookup declaration
to avoid:

  In file included from include/qapi/error.h:275:
  qapi/qapi-types-error.h:30:14: error: unknown type name 'QEnumLookup'
  extern const QEnumLookup QapiErrorClass_lookup;
               ^

Signed-off-by: Philippe Mathieu-Daudé <philmd@linaro.org>
---
 include/qapi/util.h | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/include/qapi/util.h b/include/qapi/util.h
index b8254247b8..568f31ac9e 100644
--- a/include/qapi/util.h
+++ b/include/qapi/util.h
@@ -22,6 +22,8 @@ typedef struct QEnumLookup {
     const int size;
 } QEnumLookup;
 
+#include "qapi/error.h"
+
 const char *qapi_enum_lookup(const QEnumLookup *lookup, int val);
 int qapi_enum_parse(const QEnumLookup *lookup, const char *buf,
                     int def, Error **errp);
-- 
2.45.2

On 8/6/24 22:41, Philippe Mathieu-Daudé wrote:
> qapi_enum_parse() uses the Error type which is
> declared in "qapi/error.h". Include "qapi/error.h"
> in order to avoid:
> 
>    include/qapi/util.h:27:30: error: unknown type name 'Error'
>                      int def, Error **errp);
>                               ^
> 
> Note we include it after the QEnumLookup declaration
> to avoid:
> 
>    In file included from include/qapi/error.h:275:
>    qapi/qapi-types-error.h:30:14: error: unknown type name 'QEnumLookup'
>    extern const QEnumLookup QapiErrorClass_lookup;
>                 ^
> 
> Signed-off-by: Philippe Mathieu-Daudé <philmd@linaro.org>
> ---
>   include/qapi/util.h | 2 ++
>   1 file changed, 2 insertions(+)
> 
> diff --git a/include/qapi/util.h b/include/qapi/util.h
> index b8254247b8..568f31ac9e 100644
> --- a/include/qapi/util.h
> +++ b/include/qapi/util.h
> @@ -22,6 +22,8 @@ typedef struct QEnumLookup {
>       const int size;
>   } QEnumLookup;
>   
> +#include "qapi/error.h"
> +
>   const char *qapi_enum_lookup(const QEnumLookup *lookup, int val);
>   int qapi_enum_parse(const QEnumLookup *lookup, const char *buf,
>                       int def, Error **errp);

Error is in qemu/typedefs.h, which is included from qemu/osdeps.h, which is always first.

There is should be no need for this patch.  Why do you think it is needed?


r~