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/********************* */
/*! \file Assert.cpp
** \verbatim
** Original author: mdeters
** Major contributors: none
** Minor contributors (to current version): acsys
** This file is part of the CVC4 prototype.
** Copyright (c) 2009, 2010 The Analysis of Computer Systems Group (ACSys)
** Courant Institute of Mathematical Sciences
** New York University
** See the file COPYING in the top-level source directory for licensing
** information.\endverbatim
**
** \brief Assertion utility classes, functions, and exceptions.
**
** Assertion utility classes, functions, and exceptions. Implementation.
**/
#include <new>
#include <cstdarg>
#include <cstdio>
#include "util/Assert.h"
using namespace std;
namespace CVC4 {
#ifdef CVC4_DEBUG
CVC4_PUBLIC CVC4_THREADLOCAL(const char*) s_debugLastException = NULL;
#endif /* CVC4_DEBUG */
void AssertionException::construct(const char* header, const char* extra,
const char* function, const char* file,
unsigned line, const char* fmt,
va_list args) {
// try building the exception msg with a smallish buffer first,
// then with a larger one if sprintf tells us to.
int n = 512;
char* buf;
for(;;) {
buf = new char[n];
int size;
if(extra == NULL) {
size = snprintf(buf, n, "%s\n%s\n%s:%d\n",
header, function, file, line);
} else {
size = snprintf(buf, n, "%s\n%s\n%s:%d:\n\n %s\n",
header, function, file, line, extra);
}
if(size < n) {
va_list args_copy;
va_copy(args_copy, args);
size += vsnprintf(buf + size, n - size, fmt, args);
va_end(args_copy);
if(size < n) {
break;
}
}
if(size >= n) {
// try again with a buffer that's large enough
n = size + 1;
delete [] buf;
}
}
setMessage(string(buf));
#ifdef CVC4_DEBUG
if(s_debugLastException == NULL) {
// we leak buf[] but only in debug mode with assertions failing
s_debugLastException = buf;
}
#else /* CVC4_DEBUG */
delete [] buf;
#endif /* CVC4_DEBUG */
}
void AssertionException::construct(const char* header, const char* extra,
const char* function, const char* file,
unsigned line) {
// try building the exception msg with a smallish buffer first,
// then with a larger one if sprintf tells us to.
int n = 256;
char* buf;
for(;;) {
buf = new char[n];
int size;
if(extra == NULL) {
size = snprintf(buf, n, "%s.\n%s\n%s:%d\n",
header, function, file, line);
} else {
size = snprintf(buf, n, "%s.\n%s\n%s:%d:\n\n %s\n",
header, function, file, line, extra);
}
if(size < n) {
break;
} else {
// try again with a buffer that's large enough
n = size + 1;
delete [] buf;
}
}
setMessage(string(buf));
#ifdef CVC4_DEBUG
// we leak buf[] but only in debug mode with assertions failing
if(s_debugLastException == NULL) {
s_debugLastException = buf;
}
#else /* CVC4_DEBUG */
delete [] buf;
#endif /* CVC4_DEBUG */
}
#ifdef CVC4_DEBUG
/**
* Special assertion failure handling in debug mode; in non-debug
* builds, the exception is thrown from the macro. We factor out this
* additional logic so as not to bloat the code at every Assert()
* expansion.
*
* Note this name is prefixed with "debug" because it is included in
* debug builds only; in debug builds, it handles all assertion
* failures (even those that exist in non-debug builds).
*/
void debugAssertionFailed(const AssertionException& thisException,
const char* propagatingException) {
static CVC4_THREADLOCAL(bool) alreadyFired = false;
if(EXPECT_TRUE( !std::uncaught_exception() ) || alreadyFired) {
throw thisException;
}
alreadyFired = true;
// propagatingException is the propagating exception, but can be
// NULL if the propagating exception is not a CVC4::Exception.
Warning() << "===========================================" << std::endl
<< "An assertion failed during stack unwinding:" << std::endl;
if(propagatingException != NULL) {
Warning() << "The propagating exception is:" << std::endl
<< propagatingException << std::endl
<< "===========================================" << std::endl;
Warning() << "The newly-thrown exception is:" << std::endl;
} else {
Warning() << "The propagating exception is unknown." << std::endl;
}
Warning() << thisException << std::endl
<< "===========================================" << std::endl;
terminate();
}
#endif /* CVC4_DEBUG */
}/* CVC4 namespace */
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