Merge pull request EOSIO#38 from EOSIO/release/1.1.x

Release/1.1.x

CMakeLists.txt

@@ -3,7 +3,7 @@ project(eosio_wasm_sdk)
 
 set(VERSION_MAJOR 1)
 set(VERSION_MINOR 1)
-set(VERSION_PATCH 0)
+set(VERSION_PATCH 1)
 
 if (CMAKE_INSTALL_PREFIX_INITIALIZED_TO_DEFAULT)
    message(WARNING "CMAKE_INSTALL_PREFIX is set to default path of ${CMAKE_INSTALL_PREFIX}, resetting to ${CMAKE_INSTALL_PREFIX}/eosio.wasmsdk")

README.md

@@ -1,5 +1,5 @@
 # WasmSDK
-## Version : 1.1.0
+## Version : 1.1.1
 
 WasmSDK is a toolchain for WebAssembly (WASM).  In addition to being a general purpose WebAssembly toolchain, [EOSIO](https://github.com/eosio/eos) specific optimizations are available to support building EOSIO smart contracts.  This new toolchain is built around [Clang 7](https://github.com/eosio/llvm), which means that the SDK has the most currently available optimizations and analyses from LLVM, but as the WASM target is still considered experimental, some optimizations are not available or incomplete.
 

libraries/eosiolib/asset.hpp

@@ -173,10 +173,10 @@ namespace eosio {
        * @post The amount of this asset is multiplied by a
        */
       asset& operator*=( int64_t a ) {
-         eosio_assert( a == 0 || (amount * a) / a == amount, "multiplication overflow or underflow" );
-         amount *= a;
-         eosio_assert( -max_amount <= amount, "multiplication underflow" );
-         eosio_assert( amount <= max_amount,  "multiplication overflow" );
+         int128_t tmp = (int128_t)amount * (int128_t)a;
+         eosio_assert( tmp <= max_amount, "multiplication overflow" );
+         eosio_assert( tmp >= -max_amount, "multiplication underflow" );
+         amount = (int64_t)tmp;
          return *this;
       }
 
@@ -218,6 +218,8 @@ namespace eosio {
        * @post The amount of this asset is divided by a
        */
       asset& operator/=( int64_t a ) {
+         eosio_assert( a != 0, "divide by zero" );
+         eosio_assert( !(amount == std::numeric_limits<int64_t>::min() && a == -1), "signed division overflow" );
          amount /= a;
          return *this;
       }
@@ -246,6 +248,7 @@ namespace eosio {
        * @pre Both asset must have the same symbol
        */
       friend int64_t operator/( const asset& a, const asset& b ) {
+         eosio_assert( b.amount != 0, "divide by zero" );
          eosio_assert( a.symbol == b.symbol, "comparison of assets with different symbols is not allowed" );
          return a.amount / b.amount;
       }