WebAssembly: skip unknown sections, add names

src/wasm/wasm-module.h

Index: src/wasm/wasm-module.h
diff --git a/src/wasm/wasm-module.h b/src/wasm/wasm-module.h
index 5f5777cebebe4c5a865aaa11dd37472eb61ea3f5..2249ba4dba6d7ef02feb90e0c62a38710ea9ff7e 100644
--- a/src/wasm/wasm-module.h
+++ b/src/wasm/wasm-module.h
@@ -23,21 +23,28 @@ const size_t kMaxModuleSize = 1024 * 1024 * 1024;
 const size_t kMaxFunctionSize = 128 * 1024;
 const size_t kMaxStringSize = 256;
 
+// WebAssembly sections are named as strings in the binary format, but
+// internally V8 uses an enum to handle them.
+//
+// Entries have the form F(enumerator, string).
+#define FOR_EACH_WASM_SECTION_TYPE(F)     \
+  F(kDeclMemory, "memory")                \
+  F(kDeclSignatures, "signatures")        \
+  F(kDeclFunctions, "functions")          \
+  F(kDeclGlobals, "globals")              \
+  F(kDeclDataSegments, "data_segments")   \
+  F(kDeclFunctionTable, "function_table") \
+  F(kDeclEnd, "end")                      \
+  F(kDeclStartFunction, "start_function") \
+  F(kDeclImportTable, "import_table")
+
 enum WasmSectionDeclCode {
-  kDeclMemory = 0x00,
-  kDeclSignatures = 0x01,
-  kDeclFunctions = 0x02,
-  kDeclGlobals = 0x03,
-  kDeclDataSegments = 0x04,
-  kDeclFunctionTable = 0x05,
-  kDeclEnd = 0x06,
-  kDeclStartFunction = 0x07,
-  kDeclImportTable = 0x08,
-  kDeclWLL = 0x11,
+#define F(enumerator, string) enumerator,
+  FOR_EACH_WASM_SECTION_TYPE(F)
+#undef F
+      kMaxModuleSectionCode
 };
 
-static const int kMaxModuleSectionCode = 0x11;
-
 enum WasmFunctionDeclBit {
   kDeclFunctionName = 0x01,
   kDeclFunctionImport = 0x02,