Fix jumpdest offset overflow

lib/evmone/analysis.cpp

@@ -61,9 +61,9 @@ code_analysis analyze(evmc_revision rev, const uint8_t* code, size_t code_size)
         {
             // The JUMPDEST is always the first instruction in the block.
             // We don't have to insert anything to the instruction table.
-            analysis.jumpdest_offsets.emplace_back(static_cast<int16_t>(code_pos - code - 1));
+            analysis.jumpdest_offsets.emplace_back(static_cast<int32_t>(code_pos - code - 1));
             analysis.jumpdest_targets.emplace_back(
-                static_cast<int16_t>(analysis.instrs.size() - 1));
+                static_cast<int32_t>(analysis.instrs.size() - 1));
         }
         else
             analysis.instrs.emplace_back(opcode_info.fn);

lib/evmone/analysis.hpp

@@ -199,12 +199,12 @@ struct code_analysis
     /// The offsets of JUMPDESTs in the original code.
     /// These are values that JUMP/JUMPI receives as an argument.
     /// The elements are sorted.
-    std::vector<int16_t> jumpdest_offsets;
+    std::vector<int32_t> jumpdest_offsets;
 
     /// The indexes of the instructions in the generated instruction table
     /// matching the elements from jumdest_offsets.
     /// This is value to which the next instruction pointer must be set in JUMP/JUMPI.
-    std::vector<int16_t> jumpdest_targets;
+    std::vector<int32_t> jumpdest_targets;
 };
 
 inline int find_jumpdest(const code_analysis& analysis, int offset) noexcept

test/utils/dump.cpp

@@ -37,7 +37,7 @@ void dump(const evmone::code_analysis& analysis)
                     if (static_cast<size_t>(analysis.jumpdest_targets[t]) == index)
                         return analysis.jumpdest_offsets[t];
                 }
-                return int16_t{-1};
+                return int32_t{-1};
             };
 
             std::cout << "┌ ";