From ea20dd01ce6c56620baaec15e824c7da1b2837ca Mon Sep 17 00:00:00 2001
From: Dmytro Sydorchenko <dmitriysidorchenko@gmail.com>
Date: Fri, 10 Feb 2023 19:25:54 -0500
Subject: [PATCH] reverting exceptions to jumps

---
 libraries/native/CMakeLists.txt       |  1 -
 libraries/native/crt_lib.cpp          | 10 ++++++++++
 libraries/native/intrinsics.cpp       | 18 +++---------------
 libraries/native/native/eosio/crt.hpp |  8 --------
 4 files changed, 13 insertions(+), 24 deletions(-)

diff --git a/libraries/native/CMakeLists.txt b/libraries/native/CMakeLists.txt
index f8fdee0884..d9858069e2 100644
--- a/libraries/native/CMakeLists.txt
+++ b/libraries/native/CMakeLists.txt
@@ -339,7 +339,6 @@ target_include_directories( sf PUBLIC "${CMAKE_CURRENT_SOURCE_DIR}/softfloat/sou
 if (${PARENT_PROJECT_NAME} STREQUAL "cdt_tools")
    add_library(${PROJECT_NAME} STATIC ${softfloat_sources} intrinsics.cpp crt_lib.cpp)
 
-   target_compile_definitions(${PROJECT_NAME} PUBLIC NATIVELIB_ENABLE_EXCEPTIONS)
    target_include_directories(${PROJECT_NAME} PUBLIC ${CMAKE_SOURCE_DIR}/../libraries/eosiolib/core
                                                      ${CMAKE_SOURCE_DIR}/../libraries/eosiolib/contracts
                                                      ${CMAKE_SOURCE_DIR}/../libraries/eosiolib/capi
diff --git a/libraries/native/crt_lib.cpp b/libraries/native/crt_lib.cpp
index 75fc674567..4201a0149e 100644
--- a/libraries/native/crt_lib.cpp
+++ b/libraries/native/crt_lib.cpp
@@ -8,6 +8,16 @@ eosio::cdt::output_stream std_err;
 bool ___disable_output = false;
 bool ___has_failed = false;
 bool ___earlier_unit_test_has_failed = false;
+static jmp_buf env;
+static jmp_buf test_env;
+jmp_buf* ___env_ptr = &env;
+
+void __set_env_test() {
+    ___env_ptr = &test_env;
+}
+void __reset_env() {
+    ___env_ptr = &env;
+}
 
 void _prints_l(const char* cstr, uint32_t len, uint8_t which) {
     for (int i=0; i < len; i++) {
diff --git a/libraries/native/intrinsics.cpp b/libraries/native/intrinsics.cpp
index 0e896339f3..0d5a80786a 100644
--- a/libraries/native/intrinsics.cpp
+++ b/libraries/native/intrinsics.cpp
@@ -13,18 +13,6 @@
 #include <softfloat.hpp>
 #include <float.h>
 
-#ifdef NATIVELIB_ENABLE_EXCEPTIONS
-#define RAISE_ERROR_CHOOSE(_1,_2,NAME,...) NAME
-#define RAISE_ERROR1(msg) \
-   throw eosio::cdt::assert_exception((const char*)msg)
-#define RAISE_ERROR2(msg, len) \
-   throw eosio::cdt::assert_exception(std::string((const char*)msg, (size_t)len))
-#define RAISE_ERROR(...) RAISE_ERROR_CHOOSE(__VA_ARGS__, RAISE_ERROR2, RAISE_ERROR1)(__VA_ARGS__)
-#else
-#define RAISE_ERROR(...) \
-   longjmp(*___env_ptr, 1)
-#endif
-
 // Boilerplate
 using namespace eosio::native;
 extern "C" {
@@ -873,7 +861,7 @@ extern "C" {
       if (test == 0) {
          _prints(msg, eosio::cdt::output_stream_kind::std_err);
          _prints_l("\n", 1, eosio::cdt::output_stream_kind::none);
-         RAISE_ERROR(msg);
+         longjmp(*___env_ptr, 1);
       }
    }
 
@@ -881,7 +869,7 @@ extern "C" {
       if (test == 0) {
          _prints_l(msg, len, eosio::cdt::output_stream_kind::std_err);
          _prints_l("\n", 1, eosio::cdt::output_stream_kind::none);
-         RAISE_ERROR(msg, len);
+         longjmp(*___env_ptr, 1);
       }
    }
 
@@ -891,7 +879,7 @@ extern "C" {
          snprintf(buff, 32, "%llu", code);
          _prints(buff, eosio::cdt::output_stream_kind::std_err);
          _prints_l("\n", 1, eosio::cdt::output_stream_kind::none);
-         RAISE_ERROR(buff);
+         longjmp(*___env_ptr, 1);
       }
    }
 
diff --git a/libraries/native/native/eosio/crt.hpp b/libraries/native/native/eosio/crt.hpp
index d47e441b63..7a08f1d863 100644
--- a/libraries/native/native/eosio/crt.hpp
+++ b/libraries/native/native/eosio/crt.hpp
@@ -3,14 +3,6 @@
 
 #include <string>
 
-
-#ifdef NATIVELIB_ENABLE_EXCEPTIONS
-#include <stdexcept>
-namespace eosio { namespace cdt {
-   using assert_exception = std::runtime_error;
-}} //ns eosio::cdt 
-#endif
-
 namespace eosio { namespace cdt {
 
    enum output_stream_kind {