Parser and module finding logic fixes. (#3720)

* Fix parsing logic of `struct` decl.

Fixes #3716.

* Allow `loadModule` to find modules with underscores.

* Fix test.

3 files changed, 14 insertions, 1 deletions

diff --git a/tests/language-feature/modules/module-name-underscore/my_module.slang b/tests/language-feature/modules/module-name-underscore/my_module.slang
new file mode 100644
index 000000000..32c07c8c3
--- /dev/null
+++ b/tests/language-feature/modules/module-name-underscore/my_module.slang
@@ -0,0 +1 @@
+int f() { return 1; }
\ No newline at end of file
diff --git a/tests/language-feature/modules/module-name-underscore/underscore.slang b/tests/language-feature/modules/module-name-underscore/underscore.slang
new file mode 100644
index 000000000..529611676
--- /dev/null
+++ b/tests/language-feature/modules/module-name-underscore/underscore.slang
@@ -0,0 +1,13 @@
+//TEST(compute):COMPARE_COMPUTE(filecheck-buffer=CHECK): -shaderobj -output-using-type
+//TEST(compute):COMPARE_COMPUTE(filecheck-buffer=CHECK): -vk -shaderobj -output-using-type
+
+import my_module;
+
+//TEST_INPUT:ubuffer(data=[0 0 0 0], stride=4):out,name=output
+RWStructuredBuffer<int> output;
+
+void computeMain()
+{
+    output[0] = f();
+    // CHECK: 1
+}
diff --git a/tests/parser/incomplete-member-decl.slang.expected b/tests/parser/incomplete-member-decl.slang.expected
index d7df41f58..ed5695977 100644
--- a/tests/parser/incomplete-member-decl.slang.expected
+++ b/tests/parser/incomplete-member-decl.slang.expected
@@ -3,7 +3,6 @@ standard error = {
 tests/parser/incomplete-member-decl.slang(19): error 20001: unexpected identifier, expected '('
     int MyType<X> inner;
                   ^~~~~
-tests/parser/incomplete-member-decl.slang(20): error 20001: unexpected end of file, expected identifier
 }
 standard output = {
 }