1 files changed, 70 insertions, 0 deletions
diff --git a/src/backend/utils/error/assert.c b/src/backend/utils/error/assert.c
new file mode 100644
index 0000000..70a410a
--- /dev/null
+++ b/src/backend/utils/error/assert.c
@@ -0,0 +1,70 @@
+/*-------------------------------------------------------------------------
+ *
+ * assert.c
+ *	  Assert support code.
+ *
+ * Portions Copyright (c) 1996-2021, 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();
+}