builtin: add libbacktrace as option for generating stack traces (#14277)

thirdparty/libbacktrace/backtrace.c

@@ -0,0 +1,111 @@
+/* Copyright (C) 2012-2021 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.  */
+
+#define HAVE_ATOMIC_FUNCTIONS 1
+#define HAVE_CLOCK_GETTIME 1
+#define HAVE_DECL_GETPAGESIZE 0
+#define HAVE_DECL_STRNLEN 1
+#define HAVE_DL_ITERATE_PHDR 1
+#define HAVE_GETIPINFO 1
+#define HAVE_LSTAT 1
+#define HAVE_READLINK 1
+#define HAVE_SYNC_FUNCTIONS 1
+
+#define HAVE_DLFCN_H 1
+#define HAVE_INTTYPES_H 1
+#define HAVE_LINK_H 1
+#define HAVE_MEMORY_H 1
+#define HAVE_STDINT_H 1
+#define HAVE_STDLIB_H 1
+#define HAVE_STRINGS_H 1
+#define HAVE_STRING_H 1
+#define HAVE_UNISTD_H 1
+#define STDC_HEADERS 1
+#include <stdint.h>
+#if UINTPTR_MAX == 0xFFFFFFFF
+  #define BACKTRACE_ELF_SIZE 32
+  #define BACKTRACE_XCOFF_SIZE 32
+#elif UINTPTR_MAX == 0xFFFFFFFFFFFFFFFFu
+  #define BACKTRACE_ELF_SIZE 64
+  #define BACKTRACE_XCOFF_SIZE 64
+#endif
+#ifdef __TINYC__
+  #undef HAVE_ATOMIC_FUNCTIONS
+  #undef HAVE_SYNC_FUNCTIONS
+#endif
+#ifndef _WIN32
+#define HAVE_FCNTL 1
+#endif
+#if defined(__OpenBSD__) || defined(__FreeBSD__) || defined(__NetBSD__) || defined(__DragonFly__)
+  #define HAVE_KERN_PROC 1
+  #define HAVE_KERN_PROC_ARGS 1
+#endif
+#ifdef __APPLE__
+  #define HAVE_MACH_O_DYLD_H 1
+#endif
+#ifndef _ALL_SOURCE
+  #define _ALL_SOURCE 1
+#endif
+#ifndef _GNU_SOURCE
+  #define _GNU_SOURCE 1
+  #undef HAVE_DL_ITERATE_PHDR
+#endif
+#ifndef _POSIX_PTHREAD_SEMANTICS
+  #define _POSIX_PTHREAD_SEMANTICS 1
+#endif
+#ifndef _TANDEM_SOURCE
+  #define _TANDEM_SOURCE 1
+#endif
+#ifndef __EXTENSIONS__
+  #define __EXTENSIONS__ 1
+#endif
+#ifndef _DARWIN_USE_64_BIT_INODE
+  #define _DARWIN_USE_64_BIT_INODE 1
+#endif
+
+#define BACKTRACE_SUPPORTED 1
+#define BACKTRACE_USES_MALLOC 1
+#define BACKTRACE_SUPPORTS_THREADS 1
+#define BACKTRACE_SUPPORTS_DATA 0
+
+#if __TINYC__
+  #undef BACKTRACE_SUPPORTED
+#endif
+
+#include "base.c"
+
+#if defined(__linux__) || defined(__OpenBSD__) || defined(__FreeBSD__) || defined(__NetBSD__) || defined(__DragonFly__)
+  #include "linux.c"
+#elif defined(__APPLE__)
+  #include "darwin.c"
+#elif defined(_WIN32)
+  #include "windows.c"
+#endif