> Le 10 sept. 2023 à 14:31, Frank Hrebabetzky <hr...@t-online.de> a écrit :
>
> The thread "Attempt to make v2 backward compatible" addressed basically to
> Gnoga developers. As end user of Gnoga (and still in the learning phase) I
> would like to know how to treat the following compilation error:
>
> Compile
> [Ada] net-main.adb
> net-main.adb:18:12: error: no candidate interpretations match the actuals:
> net-main.adb:18:12: error: missing argument for parameter "Occurrence" in
> call to "Log" declared at gnoga.ads:113
> net-main.adb:18:60: error: expected private type
> "Ada.Exceptions.Exception_Occurrence"
> net-main.adb:18:60: error: found type "Standard.String"
> net-main.adb:18:60: error: ==> in call to "Log" at gnoga.ads:110
> net-main.adb:18:60: error: ==> in call to "Log" at gnoga.ads:107
> uxstrings.ads:93:81: error: strings are delimited by double quote character
> uxstrings.ads:93:81: error: expected type "Standard.Character"
> uxstrings.ads:93:81: error: found a string type
> uxstrings.ads:96:81: error: strings are delimited by double quote character
> uxstrings.ads:96:81: error: expected type "Standard.Character"
> uxstrings.ads:96:81: error: found a string type
> uxstrings.ads:108:92: error: strings are delimited by double quote character
> uxstrings.ads:108:92: error: expected type "Standard.Wide_Character"
> uxstrings.ads:108:92: error: found a string type
> uxstrings.ads:111:73: error: strings are delimited by double quote character
> uxstrings.ads:111:73: error: expected type "Standard.Wide_Character"
> uxstrings.ads:111:73: error: found a string type
> gprbuild: *** compilation phase failed
>
> The accused line 18 of net-main.adb is
>
> Gnoga.Log (Ada.Exceptions.Exception_Name (E) & " - " &
> Ada.Exceptions.Exception_Message (E));
>
> Compiler switches are
>
> package Compiler is
> for Default_Switches ("Ada") use ("-g", "-gnata", "-gnatq", "-gnatQ");
> end Compiler;
>
> First I thought it was an error in my application, but it compiles without
> any problem on another PC with Gnoga version 1. Then I thought I messed up
> the installation of Gnoga version 2.1a, but various reinstallations resulted
> in the same error. And when searching for help I got aware of the
> compatibility problem. So what should I do?
Hello Frank,
The main change between Gnoga V1 and V2 is string encoding improvement with
Unicode strings managed by UXStrings lib.
To ease this usage a subtype has been created in gnoga.ads:
https://sourceforge.net/p/gnoga/code/ci/dev_2.1/tree/src/gnoga.ads#l46
You may change your strings with this type, see example:
https://sourceforge.net/p/gnoga/code/ci/dev_2.1/tree/test/forms.adb#l17
Concerning your error you may use the dedicated Log procedure as here:
https://sourceforge.net/p/gnoga/code/ci/dev_2.1/tree/tutorial/tutorial-03/tutorial_03.adb#l60
or the one without message:
Gnoga.Log (E);
Regards, Pascal.
https://blady.pagesperso-orange.fr
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