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#include "mozilla/Assertions.h"
#include <stdio.h>
#include "nscore.h"
#include "nsXULAppAPI.h"
#include "nsExceptionHandler.h"
#include "mozilla/Unused.h"
/*
* This pure virtual call example is from MSDN
*/
class A;
void fcn( A* );
class A
{
public:
virtual void f() = 0;
A() { fcn( this ); }
};
class B : A
{
void f() { }
public:
void use() { }
};
void fcn( A* p )
{
p->f();
}
void PureVirtualCall()
{
// generates a pure virtual function call
B b;
b.use(); // make sure b's actually used
}
// Keep these in sync with CrashTestUtils.jsm!
const int16_t CRASH_INVALID_POINTER_DEREF = 0;
const int16_t CRASH_PURE_VIRTUAL_CALL = 1;
const int16_t CRASH_RUNTIMEABORT = 2;
const int16_t CRASH_OOM = 3;
const int16_t CRASH_MOZ_CRASH = 4;
const int16_t CRASH_ABORT = 5;
extern "C" NS_EXPORT
void Crash(int16_t how)
{
switch (how) {
case CRASH_INVALID_POINTER_DEREF: {
volatile int* foo = (int*)0x42;
*foo = 0;
// not reached
break;
}
case CRASH_PURE_VIRTUAL_CALL: {
PureVirtualCall();
// not reached
break;
}
case CRASH_RUNTIMEABORT: {
NS_RUNTIMEABORT("Intentional crash");
break;
}
case CRASH_OOM: {
mozilla::Unused << moz_xmalloc((size_t) -1);
mozilla::Unused << moz_xmalloc((size_t) -1);
mozilla::Unused << moz_xmalloc((size_t) -1);
break;
}
case CRASH_MOZ_CRASH: {
MOZ_CRASH();
break;
}
case CRASH_ABORT: {
abort();
break;
}
default:
break;
}
}
extern "C" NS_EXPORT
nsISupports* LockDir(nsIFile *directory)
{
nsISupports* lockfile = nullptr;
XRE_LockProfileDirectory(directory, &lockfile);
return lockfile;
}
char testData[32];
extern "C" NS_EXPORT
uint64_t SaveAppMemory()
{
for (size_t i=0; i<sizeof(testData); i++)
testData[i] = i;
FILE *fp = fopen("crash-addr", "w");
if (!fp)
return 0;
fprintf(fp, "%p\n", (void *)testData);
fclose(fp);
return (int64_t)testData;
}
#ifdef XP_WIN32
static LONG WINAPI HandleException(EXCEPTION_POINTERS* exinfo)
{
TerminateProcess(GetCurrentProcess(), 0);
return 0;
}
extern "C" NS_EXPORT
void TryOverrideExceptionHandler()
{
SetUnhandledExceptionFilter(HandleException);
}
#endif
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