From d8b76ef7f105df873c978d17d5dc8660c73d2d5b Mon Sep 17 00:00:00 2001
From: whitequark <whitequark@whitequark.org>
Date: Tue, 28 Jul 2020 14:56:55 +0000
Subject: [PATCH] Drop backtrace generation.

This has been completely broken since 2018 (commit a93283df), and no
one noticed, so it probably wasn't useful. Instead of fixing it, just
drop the feature and a bunch of odd nonportable code.
---
 src/CMakeLists.txt       |  5 -----
 src/config.h.in          |  4 ----
 src/platform/guinone.cpp | 20 --------------------
 3 files changed, 29 deletions(-)

diff --git a/src/CMakeLists.txt b/src/CMakeLists.txt
index 16d6e36..fbebccf 100644
--- a/src/CMakeLists.txt
+++ b/src/CMakeLists.txt
@@ -6,11 +6,6 @@ include_directories(
     ${CMAKE_CURRENT_SOURCE_DIR}
     ${CMAKE_CURRENT_BINARY_DIR})
 
-set(HAVE_BACKTRACE ${Backtrace_FOUND})
-if(HAVE_BACKTRACE)
-    set(BACKTRACE_HEADER <${Backtrace_HEADER}>)
-endif()
-
 set(HAVE_SPACEWARE ${SPACEWARE_FOUND})
 
 if(NOT WIN32 OR APPLE)
diff --git a/src/config.h.in b/src/config.h.in
index 475b973..144c46d 100644
--- a/src/config.h.in
+++ b/src/config.h.in
@@ -12,10 +12,6 @@
 /* What OpenGL version do we use? */
 #define HAVE_OPENGL @OPENGL@
 
-/* Do we have backtrace() function, and if yes, in which library? */
-#cmakedefine HAVE_BACKTRACE
-#define BACKTRACE_HEADER @BACKTRACE_HEADER@
-
 /* If we use GTK, can we use the native file chooser? */
 #cmakedefine HAVE_GTK_FILECHOOSERNATIVE
 
diff --git a/src/platform/guinone.cpp b/src/platform/guinone.cpp
index ef3c6f3..4641b98 100644
--- a/src/platform/guinone.cpp
+++ b/src/platform/guinone.cpp
@@ -24,26 +24,6 @@ namespace Platform {
 
 void FatalError(const std::string &message) {
     fprintf(stderr, "%s", message.c_str());
-
-#if !defined(LIBRARY) && defined(HAVE_BACKTRACE)
-    static void *ptrs[1024] = {};
-    size_t nptrs = backtrace(ptrs, sizeof(ptrs) / sizeof(ptrs[0]));
-    char **syms = backtrace_symbols(ptrs, nptrs);
-
-    fprintf(stderr, "Backtrace:\n");
-    if(syms != NULL) {
-        for(size_t i = 0; i < nptrs; i++) {
-            fprintf(stderr, "%2zu: %s\n", i, syms[i]);
-        }
-    } else {
-        for(size_t i = 0; i < nptrs; i++) {
-            fprintf(stderr, "%2zu: %p\n", i, ptrs[i]);
-        }
-    }
-#else
-    fprintf(stderr, "Backtrace support not compiled in.\n");
-#endif
-
     abort();
 }