[flang-commits] [flang] ea858e3 - [flang][runtime] Accept '\n' as space in internal list-directed input (#107716)

[via flang-commits]

Author: Peter Klausler
Date: 2024-09-10T14:13:47-07:00
New Revision: ea858e39bf5b1d09021d142f0c82ef1d4a82d367

URL: https://github.com/llvm/llvm-project/commit/ea858e39bf5b1d09021d142f0c82ef1d4a82d367
DIFF: https://github.com/llvm/llvm-project/commit/ea858e39bf5b1d09021d142f0c82ef1d4a82d367.diff

LOG: [flang][runtime] Accept '\n' as space in internal list-directed input (#107716)

When scanning ahead for the first character in the next input item in
list-directed internal input, allow a newline character to appear and
treat it as a space, matching the behavior of nearly all other Fortran
compilers.

Added: 
    

Modified: 
    flang/runtime/io-stmt.h

Removed: 
    


################################################################################
diff  --git a/flang/runtime/io-stmt.h b/flang/runtime/io-stmt.h
index d67d1ec80afcea..2e0ca46078ecdc 100644
--- a/flang/runtime/io-stmt.h
+++ b/flang/runtime/io-stmt.h
@@ -194,8 +194,9 @@ class IoStatementState {
       std::size_t &byteCount) {
     auto ch{GetCurrentChar(byteCount)};
     bool inNamelist{mutableModes().inNamelist};
-    while (!ch || *ch == ' ' || *ch == '\t' || (inNamelist && *ch == '!')) {
-      if (ch && (*ch == ' ' || *ch == '\t')) {
+    while (!ch || *ch == ' ' || *ch == '\t' || *ch == '\n' ||
+        (inNamelist && *ch == '!')) {
+      if (ch && (*ch == ' ' || *ch == '\t' || *ch == '\n')) {
         HandleRelativePosition(byteCount);
       } else if (!AdvanceRecord()) {
         return Fortran::common::nullopt;