CI updates

.github/workflows/ci.yml

@@ -110,6 +110,10 @@ jobs:
         with: { submodules: true }
       - name: Check out test suite
         run: git clone --depth=1 https://github.com/upx/upx-testsuite ../deps/upx-testsuite
+      - run: clang   -E -x c   -dM /dev/null # list predefined macros for C
+      - run: clang++ -E -x c++ -dM /dev/null # list predefined macros for C++
+      - run: gcc     -E -x c   -dM /dev/null # list predefined macros for C
+      - run: g++     -E -x c++ -dM /dev/null # list predefined macros for C++
       - run: make build/extra/gcc/all
       - run: make build/extra/clang/all
       - run: make build/extra/gcc-m32/all
@@ -231,6 +235,12 @@ jobs:
       - name: Check out test suite
         if: ${{ matrix.testsuite }}
         run: git clone --depth=1 https://github.com/upx/upx-testsuite ../deps/upx-testsuite
+      - run: clang   -E -x c   -dM /dev/null # list predefined macros for C
+      - run: clang++ -E -x c++ -dM /dev/null # list predefined macros for C++
+      - run: ${{ matrix.gcc }} -E -x c   -dM /dev/null # list predefined macros for C
+        if: ${{ matrix.gcc }}
+      - run: ${{ matrix.gxx }} -E -x c++ -dM /dev/null # list predefined macros for C++
+        if: ${{ matrix.gcc }}
       - run: make build/extra/clang/all
       - name: Build extra/gcc/all
         if: ${{ matrix.gcc }}
@@ -536,6 +546,8 @@ jobs:
           if test "X$ZIG_PIC" = "X-fPIE"; then true;
             echo "ZIG_FLAGS=$ZIG_FLAGS --start-no-unused-arguments -pie --end-no-unused-arguments" >> $GITHUB_ENV
           fi
+      - run: zig-cc  -E -x c   -dM /dev/null # list predefined macros for C
+      - run: zig-cxx -E -x c++ -dM /dev/null # list predefined macros for C++
       - name: ${{ format('Build Release with zig-cc -target {0} {1}', env.ZIG_TARGET, env.ZIG_PIC) }}
         run: |
           make UPX_XTARGET=zig/${ZIG_TARGET}${ZIG_PIC} xtarget/release \

src/help.cpp

@@ -576,6 +576,15 @@ void show_sysinfo(const char *options_var) {
 #if defined(__mips_soft_float)
         cf_print("__mips_soft_float", "%lld", __mips_soft_float + 0);
 #endif
+#if defined(__wasm__)
+        cf_print("__wasm__", "%lld", __wasm__ + 0);
+#endif
+#if defined(__wasm32__)
+        cf_print("__wasm32__", "%lld", __wasm32__ + 0);
+#endif
+#if defined(__wasm64__)
+        cf_print("__wasm64__", "%lld", __wasm64__ + 0);
+#endif
 
         // OS and libc
 #if defined(WINVER)
@@ -604,6 +613,9 @@ void show_sysinfo(const char *options_var) {
 #if defined(__GLIBC_MINOR__)
         cf_print("__GLIBC_MINOR__", "%lld", __GLIBC_MINOR__ + 0);
 #endif
+#if defined(__wasi__)
+        cf_print("__wasi__", "%lld", __wasi__ + 0);
+#endif
 
         // misc compilation options
 #if defined(UPX_CONFIG_DISABLE_WSTRICT)

src/util/util.cpp

@@ -970,10 +970,15 @@ TEST_CASE("get_ratio") {
 // compat
 **************************************************************************/
 
-#if defined(__wasi__) // TODO later - wait for wasm/wasi exception handling proposal
+#if defined(__wasi__) && 1 // TODO later - wait for wasm/wasi exception handling proposal
 extern "C" {
-void __cxa_allocate_exception() throw() { std::terminate(); }
+void *__cxa_allocate_exception(std::size_t thrown_size) throw() { return ::malloc(thrown_size); }
-void __cxa_throw() { std::terminate(); }
+void __cxa_throw(void *thrown_exception, /*std::type_info*/ void *tinfo, void (*dest)(void *)) {
+    UNUSED(thrown_exception);
+    UNUSED(tinfo);
+    UNUSED(dest);
+    std::terminate();
+}
 } // extern "C"
 #endif