Clear compilation warning and dead code (#3002)

core/iwasm/compilation/aot_emit_aot_file.c

@@ -25,6 +25,7 @@
         }                                                  \
     } while (0)
 
+#if WASM_ENABLE_LOAD_CUSTOM_SECTION != 0
 static bool
 check_utf8_str(const uint8 *str, uint32 len)
 {
@@ -89,6 +90,7 @@ check_utf8_str(const uint8 *str, uint32 len)
     }
     return (p == p_end);
 }
+#endif /* end of WASM_ENABLE_LOAD_CUSTOM_SECTION != 0 */
 
 /* Internal function in object file */
 typedef struct AOTObjectFunc {
@@ -1111,6 +1113,7 @@ static union {
         EMIT_BUF(s, str_len);                         \
     } while (0)
 
+#if WASM_ENABLE_LOAD_CUSTOM_SECTION != 0
 static bool
 read_leb(uint8 **p_buf, const uint8 *buf_end, uint32 maxbits, bool sign,
          uint64 *p_result)
@@ -1309,6 +1312,7 @@ get_name_section_size(AOTCompData *comp_data)
 fail:
     return 0;
 }
+#endif /* end of WASM_ENABLE_LOAD_CUSTOM_SECTION != 0 */
 
 static uint32
 get_custom_sections_size(AOTCompContext *comp_ctx, AOTCompData *comp_data)
@@ -2065,6 +2069,7 @@ aot_emit_native_symbol(uint8 *buf, uint8 *buf_end, uint32 *p_offset,
     return true;
 }
 
+#if WASM_ENABLE_LOAD_CUSTOM_SECTION != 0
 static bool
 aot_emit_name_section(uint8 *buf, uint8 *buf_end, uint32 *p_offset,
                       AOTCompData *comp_data, AOTCompContext *comp_ctx)
@@ -2090,6 +2095,7 @@ aot_emit_name_section(uint8 *buf, uint8 *buf_end, uint32 *p_offset,
     LOG_DEBUG("emit name section");
     return true;
 }
+#endif
 
 static bool
 aot_emit_custom_sections(uint8 *buf, uint8 *buf_end, uint32 *p_offset,

core/iwasm/interpreter/wasm_loader.c

@@ -4046,15 +4046,6 @@ check_wasi_abi_compatibility(const WASMModule *module,
      * according to the assumption, they should be all wasi compatiable
      */
 
-    /* always can not have both at the same time  */
-    if (start && initialize) {
-        set_error_buf(
-            error_buf, error_buf_size,
-            "neither a command nor a reactor can both have _start function "
-            "and _initialize function at the same time");
-        return false;
-    }
-
 #if WASM_ENABLE_MULTI_MODULE != 0
     /* filter out commands (with `_start`) cases */
     if (start && !main_module) {