Add slang-wasm target (#5237)

Support for exceptions is enabled, since Slang uses them for diagnostics.
The size optimization arguments ('-Os') resolves some internal emscripten error during the
slang-wasm.wasm linking step, which happens when enabling exceptions.
("parse exception: too many locals")

1 files changed, 2 insertions, 1 deletions

diff --git a/source/compiler-core/slang-diagnostic-sink.cpp b/source/compiler-core/slang-diagnostic-sink.cpp
index 7e3c286eb..a4cbce22f 100644
--- a/source/compiler-core/slang-diagnostic-sink.cpp
+++ b/source/compiler-core/slang-diagnostic-sink.cpp
@@ -574,7 +574,8 @@ bool DiagnosticSink::diagnoseImpl(DiagnosticInfo const& info, const UnownedStrin
     if (info.severity >= Severity::Fatal)
     {
         // TODO: figure out a better policy for aborting compilation
-        SLANG_ABORT_COMPILATION("");
+        std::string message(formattedMessage.begin(), formattedMessage.end());
+        SLANG_ABORT_COMPILATION(message.c_str());
     }
     return true;
 }