Don't report error on assigning to an erroneous expression

An expression with error type may still fail the l-value check, but we don't want to emit an error in that case.

1 files changed, 5 insertions, 1 deletions

diff --git a/source/slang/check.cpp b/source/slang/check.cpp
index b87f7c6bc..b175b7f86 100644
--- a/source/slang/check.cpp
+++ b/source/slang/check.cpp
@@ -2540,7 +2540,11 @@ namespace Slang
 
             if (!type.IsLeftValue)
             {
-                if (!isRewriteMode())
+                if (type->As<ErrorType>())
+                {
+                    // Don't report an l-value issue on an errorneous expression
+                }
+                else if (!isRewriteMode())
                 {
                     getSink()->diagnose(expr, Diagnostics::assignNonLValue);
                 }