adding stack trace to tests

Tests/Vulkan/Pipeline.c

@@ -39,6 +39,8 @@ void TestPipelineSetup()
 	CleanupPulse(backend);
 }
 
+#include <signal.h>
+
 void TestPipelineReadOnlyBindings()
 {
 	PulseBackend backend;
@@ -50,6 +52,8 @@ void TestPipelineReadOnlyBindings()
 		#include "Shaders/ReadOnlyBindings.spv.h"
 	};
 
+	raise(SIGSEGV);
+
 	PulseBufferCreateInfo buffer_create_info = { 0 };
 	buffer_create_info.size = 256 * sizeof(int32_t);
 	buffer_create_info.usage = PULSE_BUFFER_USAGE_STORAGE_READ;

Tests/Vulkan/main.c

@@ -1,7 +1,37 @@
+#include <signal.h>
+#include <backtrace.h>
 #include <unity/unity.h>
+
 #include <Pulse.h>
 
-#include <stdbool.h>
+struct backtrace_state* state = NULL;
+static size_t trace_count = 0;
+
+void ErrorCallback(void* data, const char* msg, int errnum)
+{
+	fprintf(stderr, "Error in backtrace: %s (error %d)\n", msg, errnum);
+}
+
+int SymbolCallback(void* data, unsigned long pc, const char* filename, int lineno, const char* function)
+{
+	if(filename && function)
+		fprintf(stderr, "\t#%zu\033[1;34m 0x%lx\033[1;0m in\033[1;33m %s() from %s:%d\033[1;0m\n", trace_count, pc, function, filename, lineno);
+	else if(function)
+		fprintf(stderr, "\t#%zu\033[1;34m 0x%lx\033[1;0m in\033[1;33m %s() from unknown:unknown\033[1;0m\n", trace_count, pc, function);
+	else
+		fprintf(stderr, "\t#%zu\033[1;34m 0x%lx\033[1;0m in\033[1;33m ??\()\033[1;0m\n", trace_count, pc);
+	trace_count++;
+	return 0;
+}
+
+void SignalHandler(int sig)
+{
+	fprintf(stderr, "\n==========================================================\nFatal error: %s.\n<Begin of stack trace>\n", sig == SIGSEGV ? "segmentation fault" : "aborted");
+	trace_count = 0;
+	backtrace_full(state, 0, SymbolCallback, ErrorCallback, NULL);
+	fprintf(stderr, "<End of stack trace>\n==========================================================\n");
+	exit(1);
+}
 
 extern void TestBackend();
 extern void TestDevice();
@@ -11,6 +41,10 @@ extern void TestPipeline();
 
 int main(void)
 {
+	state = backtrace_create_state(NULL, 1, ErrorCallback, NULL);
+	signal(SIGSEGV, SignalHandler);
+    signal(SIGABRT, SignalHandler);
+
 	UNITY_BEGIN();
 	TestBackend();
 	TestDevice();
@@ -19,3 +53,11 @@ int main(void)
 	TestPipeline();
 	return UNITY_END();
 }
+
+/*
+#0  0x00007ffff79ad624 in ?? () from /usr/lib/libc.so.6
+#1  0x00007ffff7953ba0 in raise () from /usr/lib/libc.so.6
+#2  0x000055555560ec86 in TestPipelineReadOnlyBindings () at Tests/Vulkan/Pipeline.c:54
+#3  0x000055555560f682 in TestPipeline () at Tests/Vulkan/Pipeline.c:228
+#4  0x000055555560ea01 in main () at Tests/Vulkan/main.c:46
+*/

Tests/Vulkan/xmake.lua

@@ -94,6 +94,10 @@ if has_config("vulkan-tests") then
 	set_group("VulkanTests")
 	add_requires("unity_test")
 
+	if is_plat("linux") then
+		add_requires("libbacktrace")
+	end
+
 	target("VulkanUnitTests")
 		set_kind("binary")
 		add_deps("pulse_gpu")
@@ -102,6 +106,7 @@ if has_config("vulkan-tests") then
 		add_files("**.nzsl")
 		add_packages("unity_test")
 		if is_plat("linux") then
+			add_packages("libbacktrace")
 			set_extension(".x86_64")
 		end
 	target_end()