Parse char literals as integers (#6989)

* Parse char literals as integers

* Fix formatting

* Parse escaped chars correctly

---------

Co-authored-by: Yong He <yonghe@outlook.com>

1 files changed, 30 insertions, 0 deletions

diff --git a/tests/front-end/char-literal.slang b/tests/front-end/char-literal.slang
new file mode 100644
index 000000000..69d106c27
--- /dev/null
+++ b/tests/front-end/char-literal.slang
@@ -0,0 +1,30 @@
+//TEST(compute):COMPARE_COMPUTE(filecheck-buffer=CHECK): -vk -compute -shaderobj
+//TEST(compute):COMPARE_COMPUTE(filecheck-buffer=CHECK): -dx12 -compute -shaderobj
+//TEST(compute):COMPARE_COMPUTE(filecheck-buffer=CHECK): -cpu -compute -shaderobj
+
+// Test that char literals work as expected.
+
+// CHECK: 48
+// CHECK-NEXT: 65
+// CHECK-NEXT: 6C
+// CHECK-NEXT: 6C
+// CHECK-NEXT: 6F
+// CHECK-NEXT: 4E16
+// CHECK-NEXT: 754C
+// CHECK-NEXT: A
+
+//TEST_INPUT:ubuffer(data=[0 0 0 0 0 0 0 0], stride=4):out,name outputBuffer
+RWStructuredBuffer<int> outputBuffer;
+
+[numthreads(1, 1, 1)]
+void computeMain()
+{
+    outputBuffer[0] = 'H';
+    outputBuffer[1] = 'e';
+    outputBuffer[2] = 'l';
+    outputBuffer[3] = 'l';
+    outputBuffer[4] = 'o';
+    outputBuffer[5] = '世';
+    outputBuffer[6] = '界';
+    outputBuffer[7] = '\n';
+}