Add CI build with clang sanitizers, increase stack size to 30 MB for builds with sanitizers.

platform/linuxbsd/detect.py

@@ -162,6 +162,7 @@ def configure(env):
 
     if env["use_ubsan"] or env["use_asan"] or env["use_lsan"] or env["use_tsan"] or env["use_msan"]:
         env.extra_suffix += ".san"
+        env.Append(CCFLAGS=["-DSANITIZERS_ENABLED"])
 
         if env["use_ubsan"]:
             env.Append(

platform/linuxbsd/godot_linuxbsd.cpp

@@ -33,10 +33,20 @@
 #include <stdlib.h>
 #include <unistd.h>
 
+#if defined(SANITIZERS_ENABLED)
+#include <sys/resource.h>
+#endif
+
 #include "main/main.h"
 #include "os_linuxbsd.h"
 
 int main(int argc, char *argv[]) {
+#if defined(SANITIZERS_ENABLED)
+	// Note: Set stack size to be at least 30 MB (vs 8 MB default) to avoid overflow, address sanitizer can increase stack usage up to 3 times.
+	struct rlimit stack_lim = { 0x1E00000, 0x1E00000 };
+	setrlimit(RLIMIT_STACK, &stack_lim);
+#endif
+
 	OS_LinuxBSD os;
 
 	setlocale(LC_CTYPE, "");