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/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/* vim: set ts=8 sts=2 et sw=2 tw=80: */
/* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
// Simply including <exception> was enough to crash sixgill at one point.
#include <exception>
#define ANNOTATE(property) __attribute__((annotate(property)))
struct Cell {
int f;
} ANNOTATE("GC Thing");
extern void GC() ANNOTATE("GC Call");
void GC() {
// If the implementation is too trivial, the function body won't be emitted at
// all.
asm("");
}
class RAII_GC {
public:
RAII_GC() {}
~RAII_GC() { GC(); }
};
// ~AutoSomething calls GC because of the RAII_GC field. The constructor,
// though, should *not* GC -- unless it throws an exception. Which is not
// possible when compiled with -fno-exceptions. This test will try it both
// ways.
class AutoSomething {
RAII_GC gc;
public:
AutoSomething() : gc() {
asm(""); // Ooh, scary, this might throw an exception
}
~AutoSomething() { asm(""); }
};
extern Cell* getcell();
extern void usevar(Cell* cell);
void f() {
Cell* thing = getcell(); // Live range starts here
// When compiling with -fexceptions, there should be a hazard below. With
// -fno-exceptions, there should not be one. We will check both.
{
AutoSomething smth; // Constructor can GC only if exceptions are enabled
usevar(thing); // Live range ends here
} // In particular, 'thing' is dead at the destructor, so no hazard
}