[vala] codegen: Initialize temp-variable for fixed-size arrays to zero first

[Rico Tzschichholz <ricotz src gnome org>]

commit e8d47c0c883b3c97ff5dce932d785f25b8464494
Author: Rico Tzschichholz <ricotz ubuntu com>
Date:   Sat Sep 2 09:46:33 2017 +0200

    codegen: Initialize temp-variable for fixed-size arrays to zero first
    
    https://bugzilla.gnome.org/show_bug.cgi?id=787152

 codegen/valaccodearraymodule.vala |    1 +
 tests/Makefile.am                 |    1 +
 tests/basic-types/bug787152.vala  |    8 ++++++++
 3 files changed, 10 insertions(+), 0 deletions(-)
---
diff --git a/codegen/valaccodearraymodule.vala b/codegen/valaccodearraymodule.vala
index 2b78bbc..ea0a85d 100644
--- a/codegen/valaccodearraymodule.vala
+++ b/codegen/valaccodearraymodule.vala
@@ -44,6 +44,7 @@ public class Vala.CCodeArrayModule : CCodeMethodCallModule {
                        // no heap allocation for fixed-length arrays
 
                        var temp_var = get_temp_variable (array_type, true, expr);
+                       temp_var.init = true;
                        var name_cnode = get_variable_cexpression (temp_var.name);
                        int i = 0;
 
diff --git a/tests/Makefile.am b/tests/Makefile.am
index 48c0cb0..b3e5f7c 100644
--- a/tests/Makefile.am
+++ b/tests/Makefile.am
@@ -47,6 +47,7 @@ TESTS = \
        basic-types/bug771626.test \
        basic-types/bug772426.vala \
        basic-types/bug777697.test \
+       basic-types/bug787152.vala \
        chainup/class-base.vala \
        chainup/class-base-foo.vala \
        chainup/class-object.vala \
diff --git a/tests/basic-types/bug787152.vala b/tests/basic-types/bug787152.vala
new file mode 100644
index 0000000..a6ae36b
--- /dev/null
+++ b/tests/basic-types/bug787152.vala
@@ -0,0 +1,8 @@
+void main () {
+       int test[6] = { 23, 4711, 42 };
+       assert (test[4] == 0);
+       assert (test[5] == 0);
+       int test2[6] = test;
+       assert (test2[4] == 0);
+       assert (test2[5] == 0);
+}