From: Iain Buclaw <ibuclaw@gdcproject.org>
Date: Wed, 9 Jun 2021 17:39:28 +0000 (+0200)
Subject: d: TypeInfo error when using slice copy on Structs (PR100964)
X-Git-Tag: releases/gcc-11.2.0~266
X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=10d4f283f4177d80cec3c9e8bf447a48cab5bb47;p=thirdparty%2Fgcc.git

d: TypeInfo error when using slice copy on Structs (PR100964)

Known limitation: does not work for struct with postblit or dtor.

gcc/d/ChangeLog:

	PR d/100964
	* dmd/expression.c (Expression::checkPostblit): Don't generate
	TypeInfo when RTTI is disabled.

gcc/testsuite/ChangeLog:

	PR d/100964
	* gdc.test/compilable/betterCarray.d: Add test cases.

(cherry picked from commit 036e14ca44eaddf329a79d56d556862118b1f220)
---

diff --git a/gcc/d/dmd/expression.c b/gcc/d/dmd/expression.c
index 2592b38d961b..88f13e9669bc 100644
--- a/gcc/d/dmd/expression.c
+++ b/gcc/d/dmd/expression.c
@@ -1044,8 +1044,11 @@ bool Expression::checkPostblit(Scope *sc, Type *t)
     t = t->baseElemOf();
     if (t->ty == Tstruct)
     {
-        // Bugzilla 11395: Require TypeInfo generation for array concatenation
-        semanticTypeInfo(sc, t);
+        if (global.params.useTypeInfo)
+        {
+            // Bugzilla 11395: Require TypeInfo generation for array concatenation
+            semanticTypeInfo(sc, t);
+        }
 
         StructDeclaration *sd = ((TypeStruct *)t)->sym;
         if (sd->postblit)
diff --git a/gcc/testsuite/gdc.test/compilable/betterCarray.d b/gcc/testsuite/gdc.test/compilable/betterCarray.d
index 74c80be3b95b..3f48b042bde5 100644
--- a/gcc/testsuite/gdc.test/compilable/betterCarray.d
+++ b/gcc/testsuite/gdc.test/compilable/betterCarray.d
@@ -15,3 +15,13 @@ int foo(int[] a, int i)
 {
     return a[i];
 }
+
+/**********************************************/
+// https://issues.dlang.org/show_bug.cgi?id=19234
+void issue19234()
+{
+    static struct A {}
+    A[10] a;
+    A[10] b;
+    b[] = a[];
+}