app_jsdt: updated duktape js engine to v2.3.0

src/modules/app_jsdt/duk_config.h

@@ -1,9 +1,9 @@
 /*
  *  duk_config.h configuration header generated by genconfig.py.
  *
- *  Git commit: 25420e773c5fbc50d5b46bf487fc45717e35b94f
- *  Git describe: v2.2.1
- *  Git branch: v2.2-maintenance
+ *  Git commit: d7fdb67f18561a50e06bafd196c6b423af9ad6fe
+ *  Git describe: v2.3.0
+ *  Git branch: master
  *
  *  Supported platforms:
  *      - Mac OSX, iPhone, Darwin
@@ -218,12 +218,6 @@
 #define DUK_F_UNIX
 #endif
 
-/* C++ */
-#undef DUK_F_CPP
-#if defined(__cplusplus)
-#define DUK_F_CPP
-#endif
-
 /* Intel x86 (32-bit), x64 (64-bit) or x32 (64-bit but 32-bit pointers),
  * define only one of DUK_F_X86, DUK_F_X64, DUK_F_X32.
  * https://sites.google.com/site/x32abi/
@@ -301,6 +295,12 @@
 #define DUK_F_CLANG
 #endif
 
+/* C++ */
+#undef DUK_F_CPP
+#if defined(__cplusplus)
+#define DUK_F_CPP
+#endif
+
 /* C99 or above */
 #undef DUK_F_C99
 #if defined(__STDC_VERSION__) && (__STDC_VERSION__ >= 199901L)
@@ -836,9 +836,7 @@
 #include <stdint.h>
 #endif
 
-#if defined(DUK_F_CPP)
-#include <exception>  /* std::exception */
-#endif
+/* <exception> is only included if needed, based on DUK_USE_xxx flags. */
 
 /*
  *  Architecture autodetection
@@ -850,26 +848,23 @@
 #if !defined(DUK_USE_BYTEORDER)
 #define DUK_USE_BYTEORDER 1
 #endif
-/* XXX: This is technically not guaranteed because it's possible to configure
- * an x86 to require aligned accesses with Alignment Check (AC) flag.
+
+#define DUK_USE_PACKED_TVAL
+
+/* FreeBSD, -m32, and clang prior to 5.0 has union aliasing issues which
+ * break duk_tval copying.  Disable packed duk_tval automatically.
  */
-#if !defined(DUK_USE_ALIGN_BY)
-#define DUK_USE_ALIGN_BY 1
+#if defined(DUK_F_FREEBSD) && defined(DUK_F_X86) && \
+    defined(__clang__) && defined(__clang_major__) && (__clang_major__ < 5)
+#undef DUK_USE_PACKED_TVAL
 #endif
-#define DUK_USE_PACKED_TVAL
 #define DUK_F_PACKED_TVAL_PROVIDED
 #elif defined(DUK_F_X64)
 /* --- x64 --- */
 #define DUK_USE_ARCH_STRING "x64"
 #if !defined(DUK_USE_BYTEORDER)
 #define DUK_USE_BYTEORDER 1
 #endif
-/* XXX: This is technically not guaranteed because it's possible to configure
- * an x86 to require aligned accesses with Alignment Check (AC) flag.
- */
-#if !defined(DUK_USE_ALIGN_BY)
-#define DUK_USE_ALIGN_BY 1
-#endif
 #undef DUK_USE_PACKED_TVAL
 #define DUK_F_PACKED_TVAL_PROVIDED
 #elif defined(DUK_F_X32)
@@ -878,48 +873,30 @@
 #if !defined(DUK_USE_BYTEORDER)
 #define DUK_USE_BYTEORDER 1
 #endif
-/* XXX: This is technically not guaranteed because it's possible to configure
- * an x86 to require aligned accesses with Alignment Check (AC) flag.
- */
-#if !defined(DUK_USE_ALIGN_BY)
-#define DUK_USE_ALIGN_BY 1
-#endif
 #define DUK_USE_PACKED_TVAL
 #define DUK_F_PACKED_TVAL_PROVIDED
 #elif defined(DUK_F_ARM32)
 /* --- ARM 32-bit --- */
 #define DUK_USE_ARCH_STRING "arm32"
 /* Byte order varies, so rely on autodetect. */
-#if !defined(DUK_USE_ALIGN_BY)
-#define DUK_USE_ALIGN_BY 4
-#endif
 #define DUK_USE_PACKED_TVAL
 #define DUK_F_PACKED_TVAL_PROVIDED
 #elif defined(DUK_F_ARM64)
 /* --- ARM 64-bit --- */
 #define DUK_USE_ARCH_STRING "arm64"
 /* Byte order varies, so rely on autodetect. */
-#if !defined(DUK_USE_ALIGN_BY)
-#define DUK_USE_ALIGN_BY 8
-#endif
 #undef DUK_USE_PACKED_TVAL
 #define DUK_F_PACKED_TVAL_PROVIDED
 #elif defined(DUK_F_MIPS32)
 /* --- MIPS 32-bit --- */
 #define DUK_USE_ARCH_STRING "mips32"
 /* MIPS byte order varies so rely on autodetection. */
-#if !defined(DUK_USE_ALIGN_BY)
-#define DUK_USE_ALIGN_BY 8
-#endif
 #define DUK_USE_PACKED_TVAL
 #define DUK_F_PACKED_TVAL_PROVIDED
 #elif defined(DUK_F_MIPS64)
 /* --- MIPS 64-bit --- */
 #define DUK_USE_ARCH_STRING "mips64"
 /* MIPS byte order varies so rely on autodetection. */
-#if !defined(DUK_USE_ALIGN_BY)
-#define DUK_USE_ALIGN_BY 8
-#endif
 #undef DUK_USE_PACKED_TVAL
 #define DUK_F_PACKED_TVAL_PROVIDED
 #elif defined(DUK_F_PPC32)
@@ -928,9 +905,6 @@
 #if !defined(DUK_USE_BYTEORDER)
 #define DUK_USE_BYTEORDER 3
 #endif
-#if !defined(DUK_USE_ALIGN_BY)
-#define DUK_USE_ALIGN_BY 8
-#endif
 #define DUK_USE_PACKED_TVAL
 #define DUK_F_PACKED_TVAL_PROVIDED
 #elif defined(DUK_F_PPC64)
@@ -939,39 +913,24 @@
 #if !defined(DUK_USE_BYTEORDER)
 #define DUK_USE_BYTEORDER 3
 #endif
-#if !defined(DUK_USE_ALIGN_BY)
-#define DUK_USE_ALIGN_BY 8
-#endif
 #undef DUK_USE_PACKED_TVAL
 #define DUK_F_PACKED_TVAL_PROVIDED
 #elif defined(DUK_F_SPARC32)
 /* --- SPARC 32-bit --- */
 #define DUK_USE_ARCH_STRING "sparc32"
 /* SPARC byte order varies so rely on autodetection. */
-#if !defined(DUK_USE_ALIGN_BY)
-#define DUK_USE_ALIGN_BY 8
-#endif
 #define DUK_USE_PACKED_TVAL
 #define DUK_F_PACKED_TVAL_PROVIDED
 #elif defined(DUK_F_SPARC64)
 /* --- SPARC 64-bit --- */
 #define DUK_USE_ARCH_STRING "sparc64"
 /* SPARC byte order varies so rely on autodetection. */
-#if !defined(DUK_USE_ALIGN_BY)
-#define DUK_USE_ALIGN_BY 8
-#endif
 #undef DUK_USE_PACKED_TVAL
 #define DUK_F_PACKED_TVAL_PROVIDED
 #elif defined(DUK_F_SUPERH)
 /* --- SuperH --- */
 #define DUK_USE_ARCH_STRING "sh"
 /* Byte order varies, rely on autodetection. */
-/* Based on 'make checkalign' there are no alignment requirements on
- * Linux SH4, but align by 4 is probably a good basic default.
- */
-#if !defined(DUK_USE_ALIGN_BY)
-#define DUK_USE_ALIGN_BY 4
-#endif
 #define DUK_USE_PACKED_TVAL
 #define DUK_F_PACKED_TVAL_PROVIDED
 #elif defined(DUK_F_M68K)
@@ -980,9 +939,6 @@
 #if !defined(DUK_USE_BYTEORDER)
 #define DUK_USE_BYTEORDER 3
 #endif
-#if !defined(DUK_USE_ALIGN_BY)
-#define DUK_USE_ALIGN_BY 8
-#endif
 #define DUK_USE_PACKED_TVAL
 #define DUK_F_PACKED_TVAL_PROVIDED
 #elif defined(DUK_F_EMSCRIPTEN)
@@ -991,9 +947,6 @@
 #if !defined(DUK_USE_BYTEORDER)
 #define DUK_USE_BYTEORDER 1
 #endif
-#if !defined(DUK_USE_ALIGN_BY)
-#define DUK_USE_ALIGN_BY 8
-#endif
 #undef DUK_USE_PACKED_TVAL
 #define DUK_F_PACKED_TVAL_PROVIDED
 #else
@@ -2540,10 +2493,13 @@ typedef struct duk_hthread duk_context;
  *
  *  Assume unaligned accesses are not supported unless specifically allowed
  *  in the target platform.  Some platforms may support unaligned accesses
- *  but alignment to 4 or 8 may still be desirable.
+ *  but alignment to 4 or 8 may still be desirable.  Note that unaligned
+ *  accesses (and even pointers) relative to natural alignment (regardless
+ *  of target alignment) are technically undefined behavior and thus
+ *  compiler/architecture specific.
  */
 
-/* If not provided, use safe default for alignment. */
+/* If not forced, use safe default for alignment. */
 #if !defined(DUK_USE_ALIGN_BY)
 #define DUK_USE_ALIGN_BY 8
 #endif
@@ -2595,6 +2551,7 @@ typedef struct duk_hthread duk_context;
  */
 #define DUK_CAUSE_SEGFAULT()  do { *((volatile duk_uint32_t *) NULL) = (duk_uint32_t) 0xdeadbeefUL; } while (0)
 #endif
+
 #if !defined(DUK_UNREF)
 /* Macro for suppressing warnings for potentially unreferenced variables.
  * The variables can be actually unreferenced or unreferenced in some
@@ -2604,16 +2561,32 @@ typedef struct duk_hthread duk_context;
  */
 #define DUK_UNREF(x)  do { (void) (x); } while (0)
 #endif
-#if !defined(DUK_NORETURN)
+
+/* Fillin for DUK_NORETURN; DUK_WO_NORETURN() is used to insert dummy
+ * dummy statements after noreturn calls to silence harmless compiler
+ * warnings, e.g.:
+ *
+ *   DUK_ERROR_TYPE(thr, "aiee");
+ *   DUK_WO_NORETURN(return 0;);
+ *
+ * Statements inside DUK_WO_NORETURN() must NEVER be actually reachable,
+ * and they're only included to satisfy the compiler.
+ */
+#if defined(DUK_NORETURN)
+#define DUK_WO_NORETURN(stmt) do { } while (0)
+#else
 #define DUK_NORETURN(decl)  decl
+#define DUK_WO_NORETURN(stmt) do { stmt } while (0)
 #endif
+
 #if !defined(DUK_UNREACHABLE)
 /* Don't know how to declare unreachable point, so don't do it; this
  * may cause some spurious compilation warnings (e.g. "variable used
  * uninitialized").
  */
 #define DUK_UNREACHABLE()  do { } while (0)
 #endif
+
 #if !defined(DUK_LOSE_CONST)
 /* Convert any input pointer into a "void *", losing a const qualifier.
  * This is not fully portable because casting through duk_uintptr_t may
@@ -2781,8 +2754,8 @@ typedef struct duk_hthread duk_context;
 #if defined(DUK_F_PACKED_TVAL_POSSIBLE)
 #define DUK_USE_PACKED_TVAL
 #endif
-
 #undef DUK_F_PACKED_TVAL_POSSIBLE
+
 #endif  /* DUK_F_PACKED_TVAL_PROVIDED */
 /* Object property allocation layout has implications for memory and code
  * footprint and generated code size/speed.  The best layout also depends
@@ -2817,6 +2790,7 @@ typedef struct duk_hthread duk_context;
  *  Autogenerated defaults
  */
 
+#undef DUK_USE_ALLOW_UNDEFINED_BEHAVIOR
 #define DUK_USE_ARRAY_BUILTIN
 #define DUK_USE_ARRAY_FASTPATH
 #define DUK_USE_ARRAY_PROP_FASTPATH
@@ -2825,6 +2799,7 @@ typedef struct duk_hthread duk_context;
 #define DUK_USE_AUGMENT_ERROR_THROW
 #define DUK_USE_AVOID_PLATFORM_FUNCPTRS
 #define DUK_USE_BASE64_FASTPATH
+#define DUK_USE_BASE64_SUPPORT
 #define DUK_USE_BOOLEAN_BUILTIN
 #define DUK_USE_BUFFEROBJECT_SUPPORT
 #undef DUK_USE_BUFLEN16
@@ -2902,6 +2877,7 @@ typedef struct duk_hthread duk_context;
 #undef DUK_USE_HEAPPTR_DEC16
 #undef DUK_USE_HEAPPTR_ENC16
 #define DUK_USE_HEX_FASTPATH
+#define DUK_USE_HEX_SUPPORT
 #define DUK_USE_HOBJECT_ARRAY_ABANDON_LIMIT 2
 #define DUK_USE_HOBJECT_ARRAY_FAST_RESIZE_LIMIT 9
 #define DUK_USE_HOBJECT_ARRAY_MINGROW_ADD 16
@@ -2932,11 +2908,10 @@ typedef struct duk_hthread duk_context;
 #define DUK_USE_JX
 #define DUK_USE_LEXER_SLIDING_WINDOW
 #undef DUK_USE_LIGHTFUNC_BUILTINS
+#define DUK_USE_LITCACHE_SIZE 256
 #define DUK_USE_MARK_AND_SWEEP_RECLIMIT 256
 #define DUK_USE_MATH_BUILTIN
 #define DUK_USE_NATIVE_CALL_RECLIMIT 1000
-#define DUK_USE_NONSTD_ARRAY_CONCAT_TRAILER
-#define DUK_USE_NONSTD_ARRAY_MAP_TRAILER
 #define DUK_USE_NONSTD_ARRAY_SPLICE_DELCOUNT
 #undef DUK_USE_NONSTD_FUNC_CALLER_PROPERTY
 #undef DUK_USE_NONSTD_FUNC_SOURCE_PROPERTY
@@ -3011,6 +2986,15 @@ typedef struct duk_hthread duk_context;
 
 /* __OVERRIDE_DEFINES__ */
 
+/*
+ *  Conditional includes
+ */
+
+#if defined(DUK_F_CPP) && defined(DUK_USE_CPP_EXCEPTIONS)
+#include <exception>  /* std::exception */
+#include <stdexcept>  /* std::runtime_error */
+#endif
+
 /*
  *  Date provider selection
  *
@@ -3552,6 +3536,12 @@ typedef struct duk_hthread duk_context;
 #if defined(DUK_USE_MS_STRINGTABLE_RESIZE)
 #error unsupported config option used (option has been removed): DUK_USE_MS_STRINGTABLE_RESIZE
 #endif
+#if defined(DUK_USE_NONSTD_ARRAY_CONCAT_TRAILER)
+#error unsupported config option used (option has been removed): DUK_USE_NONSTD_ARRAY_CONCAT_TRAILER
+#endif
+#if defined(DUK_USE_NONSTD_ARRAY_MAP_TRAILER)
+#error unsupported config option used (option has been removed): DUK_USE_NONSTD_ARRAY_MAP_TRAILER
+#endif
 #if defined(DUK_USE_NONSTD_REGEXP_DOLLAR_ESCAPE)
 #error unsupported config option used (option has been removed): DUK_USE_NONSTD_REGEXP_DOLLAR_ESCAPE
 #endif