Test for 1-based columns in debuginfo

Author: ecstatic-morse

src/test/codegen/debug-column-1-based.rs

@@ -0,0 +1,22 @@
+// Ensure that columns emitted in DWARF are 1-based
+
+// ignore-windows
+// compile-flags: -g -C no-prepopulate-passes
+
+#![allow(dead_code)]
+#![allow(unused_variables)]
+#![allow(unused_assignments)]
+
+fn main() {      // 10
+    let x = 32;  // 11
+}                // 12
+//  |   |
+//  |   |
+//  5   9        column index
+
+// CHECK-LABEL: !DISubprogram(name: "main"
+// CHECK:       !DILocalVariable(name: "x",{{.*}}line: 11{{[^0-9]}}
+// CHECK-NEXT:  !DILexicalBlock({{.*}}line: 11, column: 5{{[^0-9]}}
+// CHECK-NEXT:  !DILocation(line: 11, column: 9{{[^0-9]}}
+// CHECK:       !DILocation(line: 12, column: 1{{[^0-9]}}
+// CHECK-EMPTY: