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/*-------------------------------------------------------------------------
*
* assert.c
* Assert support code.
*
* Portions Copyright (c) 1996-2022, PostgreSQL Global Development Group
* Portions Copyright (c) 1994, Regents of the University of California
*
*
* IDENTIFICATION
* src/backend/utils/error/assert.c
*
*-------------------------------------------------------------------------
*/
#include "postgres.h"
#include <unistd.h>
#ifdef HAVE_EXECINFO_H
#include <execinfo.h>
#endif
/*
* ExceptionalCondition - Handles the failure of an Assert()
*
* We intentionally do not go through elog() here, on the grounds of
* wanting to minimize the amount of infrastructure that has to be
* working to report an assertion failure.
*/
void
ExceptionalCondition(const char *conditionName,
const char *errorType,
const char *fileName,
int lineNumber)
{
/* Report the failure on stderr (or local equivalent) */
if (!PointerIsValid(conditionName)
|| !PointerIsValid(fileName)
|| !PointerIsValid(errorType))
write_stderr("TRAP: ExceptionalCondition: bad arguments in PID %d\n",
(int) getpid());
else
write_stderr("TRAP: %s(\"%s\", File: \"%s\", Line: %d, PID: %d)\n",
errorType, conditionName,
fileName, lineNumber, (int) getpid());
/* Usually this shouldn't be needed, but make sure the msg went out */
fflush(stderr);
/* If we have support for it, dump a simple backtrace */
#ifdef HAVE_BACKTRACE_SYMBOLS
{
void *buf[100];
int nframes;
nframes = backtrace(buf, lengthof(buf));
backtrace_symbols_fd(buf, nframes, fileno(stderr));
}
#endif
/*
* If configured to do so, sleep indefinitely to allow user to attach a
* debugger. It would be nice to use pg_usleep() here, but that can sleep
* at most 2G usec or ~33 minutes, which seems too short.
*/
#ifdef SLEEP_ON_ASSERT
sleep(1000000);
#endif
abort();
}
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