# HG changeset patch
# User ChristianK
# Date 1214770957 -7200
# Node ID a498b736a0bd794f1e8a7eccb9a3974afa262c54
# Parent  553f844ae5b9ff3a1f0e3128e939d283e97a7b2e
[svn r334] Produce an error for zero-size types instead of segfaulting.

diff -r 553f844ae5b9 -r a498b736a0bd gen/toir.cpp
--- a/gen/toir.cpp	Sun Jun 29 22:07:15 2008 +0200
+++ b/gen/toir.cpp	Sun Jun 29 22:22:37 2008 +0200
@@ -72,6 +72,11 @@
             else {
                 // allocate storage on the stack
                 const LLType* lltype = DtoType(vd->type);
+                if(gTargetData->getTypeSizeInBits(lltype) == 0) 
+                {
+                    error("Allocating a variable of type %s and size zero is not implemented. (the behaviour of alloca with zero size is undefined)", vd->type->toChars());
+                    fatal();
+                }
                 llvm::AllocaInst* allocainst = new llvm::AllocaInst(lltype, vd->toChars(), p->topallocapoint());
                 //allocainst->setAlignment(vd->type->alignsize()); // TODO
                 assert(!vd->ir.irLocal);