[vala/staging] Perform runtime version check of libvala

[Rico Tzschichholz <ricotz src gnome org>]

commit dbe3e730690176d96078abf0ca1e9756c8d903b2
Author: Rico Tzschichholz <ricotz ubuntu com>
Date:   Wed Jul 8 11:42:02 2020 +0200

    Perform runtime version check of libvala
    
    Fixes https://gitlab.gnome.org/GNOME/vala/issues/88

 codegen/valaccodebasemodule.vala | 4 ++++
 compiler/valacompiler.vala       | 5 +++++
 valadoc/valadoc.vala             | 5 +++++
 vapigen/valavapigen.vala         | 6 ++++++
 4 files changed, 20 insertions(+)
---
diff --git a/codegen/valaccodebasemodule.vala b/codegen/valaccodebasemodule.vala
index ad292a777..9a801e369 100644
--- a/codegen/valaccodebasemodule.vala
+++ b/codegen/valaccodebasemodule.vala
@@ -373,6 +373,10 @@ public abstract class Vala.CCodeBaseModule : CodeGenerator {
        public static int ccode_attribute_cache_index = CodeNode.get_attribute_cache_index ();
 
        protected CCodeBaseModule () {
+               if (Vala.get_build_version () != Vala.BUILD_VERSION) {
+                       Report.error (null, "Integrity check failed (libvala %s doesn't match ccodegen 
%s)".printf (Vala.get_build_version (), Vala.BUILD_VERSION));
+               }
+
                predefined_marshal_set = new HashSet<string> (str_hash, str_equal);
                predefined_marshal_set.add ("VOID:VOID");
                predefined_marshal_set.add ("VOID:BOOLEAN");
diff --git a/compiler/valacompiler.vala b/compiler/valacompiler.vala
index e5a6a21d1..4cc7b2967 100644
--- a/compiler/valacompiler.vala
+++ b/compiler/valacompiler.vala
@@ -622,6 +622,11 @@ class Vala.Compiler {
                // initialize locale
                Intl.setlocale (LocaleCategory.ALL, "");
 
+               if (Vala.get_build_version () != Vala.BUILD_VERSION) {
+                       stderr.printf ("Integrity check failed (libvala %s doesn't match valac %s)\n", 
Vala.get_build_version (), Vala.BUILD_VERSION);
+                       return 1;
+               }
+
                if (Path.get_basename (args[0]) == "vala" || Path.get_basename (args[0]) == "vala" + 
Config.PACKAGE_SUFFIX) {
                        return run_source (args);
                }
diff --git a/valadoc/valadoc.vala b/valadoc/valadoc.vala
index 175bbdd9d..68d8b8fa4 100644
--- a/valadoc/valadoc.vala
+++ b/valadoc/valadoc.vala
@@ -398,6 +398,11 @@ public class ValaDoc : Object {
        static int main (string[] args) {
                Intl.setlocale (LocaleCategory.ALL, "");
 
+               if (Vala.get_build_version () != Vala.BUILD_VERSION) {
+                       stderr.printf ("Integrity check failed (libvala %s doesn't match valadoc %s)\n", 
Vala.get_build_version (), Vala.BUILD_VERSION);
+                       return 1;
+               }
+
                try {
                        var opt_context = new OptionContext ("- Vala Documentation Tool");
                        opt_context.set_help_enabled (true);
diff --git a/vapigen/valavapigen.vala b/vapigen/valavapigen.vala
index 7eb4fc044..7bd37be85 100644
--- a/vapigen/valavapigen.vala
+++ b/vapigen/valavapigen.vala
@@ -211,6 +211,12 @@ class Vala.VAPIGen {
        
        static int main (string[] args) {
                Intl.setlocale (LocaleCategory.ALL, "");
+
+               if (Vala.get_build_version () != Vala.BUILD_VERSION) {
+                       stderr.printf ("Integrity check failed (libvala %s doesn't match vapigen %s)\n", 
Vala.get_build_version (), Vala.BUILD_VERSION);
+                       return 1;
+               }
+
                try {
                        var opt_context = new OptionContext ("- Vala API Generator");
                        opt_context.set_help_enabled (true);