[flang][runtime] Fix list-directed/NAMELIST complex input with "r*" repetition count

The little state machine in GetNextDataEdit() wasn't transitioning
properly from reading the imaginary part of the number back to the
real part for the next iteration of a repeated value.

Differential Revision: https://reviews.llvm.org/D127422

diff --git a/flang/runtime/io-stmt.cpp b/flang/runtime/io-stmt.cpp
index a73012dab61690bef2df3f06c81d5152059c46fa..0201ad2bf7dad9db649ec971e068ee9c69341c79 100644 (file)
--- a/flang/runtime/io-stmt.cpp
+++ b/flang/runtime/io-stmt.cpp
@@ -799,7 +799,9 @@ ListDirectedStatementState<Direction::Input>::GetNextDataEdit(
     if (remaining_ > 0) {
       repeatPosition_.emplace(io);
     }
-    return edit;
+    if (!imaginaryPart_) {
+      return edit;
+    }
   }
   // Skip separators, handle a "r*c" repeat count; see 13.10.2 in Fortran 2018
   if (imaginaryPart_) {