[wasm] Add the 0x prefix to all constants in PrintAstForDebugging

src/wasm/ast-decoder.cc

Index: src/wasm/ast-decoder.cc
diff --git a/src/wasm/ast-decoder.cc b/src/wasm/ast-decoder.cc
index ff6af34a02089e0831878d92374236ab42ac069a..2359b7f2f7cda0ba63c95e7034f04a728c49904f 100644
--- a/src/wasm/ast-decoder.cc
+++ b/src/wasm/ast-decoder.cc
@@ -1933,7 +1933,7 @@ bool PrintAst(AccountingAllocator* allocator, const FunctionBody& body,
     for (auto p : decls.local_types) {
       LocalType type = p.first;
       uint32_t count = p.second;
-      os << " " << count << " " << WasmOpcodes::TypeName(type);
+      os << " 0x" << AsHex(count, 2) << " " << WasmOpcodes::TypeName(type);

[titzer, 2016/11/16 14:58:28]

I think this one should stay decimal, since it's a count (and can be larger than
a byte).

[ahaas, 2016/11/16 15:44:47]

Done

     }
     os << std::endl;
     ++line_nr;
@@ -1967,7 +1967,7 @@ bool PrintAst(AccountingAllocator* allocator, const FunctionBody& body,
     os << "k" << WasmOpcodes::OpcodeName(opcode) << ",";
 
     for (size_t j = 1; j < length; ++j) {
-      os << " " << AsHex(i.pc()[j], 2) << ",";
+      os << " 0x" << AsHex(i.pc()[j], 2) << ",";
     }
 
     switch (opcode) {