Mercurial > projects > ldc
view lphobos/std/outofmemory.d @ 1491:360a8e8eea51
Teach stack promotion to walk the CFG when a potential reuse of an allocation
is found to see if it can actually happen instead of just assuming it will.
This allows it to catch cases like
{{{
int i;
Foo f;
while (cond(i))
f = new Foo(i++);
return f.value;
}}}
where it previously wouldn't because a phi using the allocation would appear in
the condition block to propagate it to the use after the loop.
author | Frits van Bommel <fvbommel wxs.nl> |
---|---|
date | Thu, 11 Jun 2009 02:04:44 +0200 |
parents | 88e23f8c2354 |
children |
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/** * Macros: * WIKI=Phobos/StdOutOfMemory * Copyright: * Placed into public domain. * www.digitalmars.com */ module std.outofmemory; /****** * This exception is thrown when out of memory errors happen. */ class OutOfMemoryException : Exception { static char[] s = "Out of memory"; /** * Default constructor */ this() { super(s); } char[] toString() { return s; } } extern (C) void _d_OutOfMemory() { printf("Out of memory!\n"); *(cast(int*) 0) = 0; throw cast(OutOfMemoryException) cast(void *) OutOfMemoryException.classinfo.init; } static this() { }