From 80372d4ca082d6d35f89e99094544fc892cfeb75 Mon Sep 17 00:00:00 2001
From: Andrei Karas <akaras@inbox.ru>
Date: Tue, 26 Nov 2019 03:09:38 +0300
Subject: Add libbacktrace

---
 3rdparty/libbacktrace/print.c | 92 +++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 92 insertions(+)
 create mode 100644 3rdparty/libbacktrace/print.c

(limited to '3rdparty/libbacktrace/print.c')

diff --git a/3rdparty/libbacktrace/print.c b/3rdparty/libbacktrace/print.c
new file mode 100644
index 000000000..3c6bad283
--- /dev/null
+++ b/3rdparty/libbacktrace/print.c
@@ -0,0 +1,92 @@
+/* print.c -- Print the current backtrace.
+   Copyright (C) 2012-2018 Free Software Foundation, Inc.
+   Written by Ian Lance Taylor, Google.
+
+Redistribution and use in source and binary forms, with or without
+modification, are permitted provided that the following conditions are
+met:
+
+    (1) Redistributions of source code must retain the above copyright
+    notice, this list of conditions and the following disclaimer.
+
+    (2) Redistributions in binary form must reproduce the above copyright
+    notice, this list of conditions and the following disclaimer in
+    the documentation and/or other materials provided with the
+    distribution.
+
+    (3) The name of the author may not be used to
+    endorse or promote products derived from this software without
+    specific prior written permission.
+
+THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
+IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
+WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
+DISCLAIMED. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT,
+INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
+(INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
+SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
+STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING
+IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+POSSIBILITY OF SUCH DAMAGE.  */
+
+#include "config.h"
+
+#include <stdio.h>
+#include <string.h>
+#include <sys/types.h>
+
+#include "backtrace.h"
+#include "internal.h"
+
+/* Passed to callbacks.  */
+
+struct print_data
+{
+  struct backtrace_state *state;
+  FILE *f;
+};
+
+/* Print one level of a backtrace.  */
+
+static int
+print_callback (void *data, uintptr_t pc, const char *filename, int lineno,
+		const char *function)
+{
+  struct print_data *pdata = (struct print_data *) data;
+
+  fprintf (pdata->f, "0x%lx %s\n\t%s:%d\n",
+	   (unsigned long) pc,
+	   function == NULL ? "???" : function,
+	   filename == NULL ? "???" : filename,
+	   lineno);
+  return 0;
+}
+
+/* Print errors to stderr.  */
+
+static void
+error_callback (void *data, const char *msg, int errnum)
+{
+  struct print_data *pdata = (struct print_data *) data;
+
+  if (pdata->state->filename != NULL)
+    fprintf (stderr, "%s: ", pdata->state->filename);
+  fprintf (stderr, "libbacktrace: %s", msg);
+  if (errnum > 0)
+    fprintf (stderr, ": %s", strerror (errnum));
+  fputc ('\n', stderr);
+}
+
+/* Print a backtrace.  */
+
+void
+backtrace_print (struct backtrace_state *state, int skip, FILE *f)
+{
+  struct print_data data;
+
+  data.state = state;
+  data.f = f;
+  backtrace_full (state, skip + 1, print_callback, error_callback,
+		  (void *) &data);
+}
-- 
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