Merge branch main into dev/wasi_threads

samples/gui/wasm-apps/increase/Makefile

@@ -25,9 +25,9 @@ SRCS += $(APP_FRAMEWORK_DIR)/wgl/app/src/*.c
 
 all:
 	@$(CC) $(CFLAGS) $(SRCS) \
-    --target=wasm32 -O3 -z stack-size=2048 -Wl,--initial-memory=65536 \
-    -Wl,--allow-undefined \
-    -Wl,--strip-all,--no-entry -nostdlib \
+    --target=wasm32-wasi -O3 -z stack-size=2048 -Wl,--initial-memory=65536 \
+    -nostdlib -Wl,--allow-undefined \
+    -Wl,--strip-all,--no-entry \
     -Wl,--export=on_init -Wl,--export=on_timer_callback \
     -Wl,--export=on_widget_event \
     -Wl,--export=__heap_base,--export=__data_end \

samples/multi-thread/wasm-apps/CMakeLists.txt

@@ -38,3 +38,6 @@ set (CMAKE_EXE_LINKER_FLAGS
 
 add_executable(test.wasm  main.c)
 target_link_libraries(test.wasm)
+
+add_executable(main_thread_exception.wasm  main_thread_exception.c)
+target_link_libraries(main_thread_exception.wasm)

samples/multi-thread/wasm-apps/main_thread_exception.c

@@ -0,0 +1,36 @@
+/*
+ * Copyright (C) 2019 Intel Corporation.  All rights reserved.
+ * SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+ */
+
+#include <stdio.h>
+#include <pthread.h>
+
+typedef struct ThreadArgs {
+    int start;
+    int length;
+} ThreadArgs;
+
+void *
+thread(void *args)
+{
+    while (1) {
+        /* When other threads (including main thread) throw exception,
+            this thread can successfully exit the dead loop */
+    }
+}
+
+int
+main()
+{
+    pthread_t tids;
+
+    if (pthread_create(&tids, NULL, thread, NULL) != 0) {
+        printf("pthread_create failed\n");
+    }
+
+    /* Trigger an exception */
+    __builtin_trap();
+
+    return 0;
+}