commit 8198d57ff235ddf57c9ab48f55a39dcb3037977e
author Ben Clayton <bclayton@google.com> Mon Apr 19 14:37:49 2021 +0000
committer Commit Bot service account <commit-bot@chromium.org> Mon Apr 19 14:37:49 2021 +0000
tree 491b0a5781fbfb264bdf2a2fb3405ff61ce23590
parent 238de882668623ac1d91600b5586b63933cce83c

writer/wgsl: Handle inferred-type variable declarations

Fixes a null-pointer deference crash.

Bug: tint:672
Change-Id: Icfcb1c8754950ea0e074a0b392d0b34748a13827
Reviewed-on: https://dawn-review.googlesource.com/c/tint/+/48225
Commit-Queue: Ben Clayton <bclayton@chromium.org>
Reviewed-by: James Price <jrprice@google.com>

src/writer/wgsl/generator_impl.cc

diff --git a/src/writer/wgsl/generator_impl.cc b/src/writer/wgsl/generator_impl.cc
index 156b266..a93a5bf 100644
--- a/src/writer/wgsl/generator_impl.cc
+++ b/src/writer/wgsl/generator_impl.cc
@@ -598,9 +598,13 @@
     }
   }
 
-  out_ << " " << program_->Symbols().NameFor(var->symbol()) << " : ";
-  if (!EmitType(sem->DeclaredType())) {
-    return false;
+  out_ << " " << program_->Symbols().NameFor(var->symbol());
+
+  if (var->declared_type()) {
+    out_ << " : ";
+    if (!EmitType(var->declared_type())) {
+      return false;
+    }
   }
 
   if (var->constructor() != nullptr) {