[flang-commits] [PATCH] D127420: [flang][runtime] Fix nonadvancing output edge case
Peter Klausler via Phabricator via flang-commits
flang-commits at lists.llvm.org
Thu Jun 9 12:03:21 PDT 2022
klausler created this revision.
klausler added a project: Flang.
Herald added a subscriber: jdoerfert.
Herald added a project: All.
klausler requested review of this revision.
When nonadvancing output uses T/TL control edit descriptors to reposition
the record, don't reset the position to the furthest point written at
the end of the write.
https://reviews.llvm.org/D127420
Files:
flang/runtime/io-stmt.cpp
Index: flang/runtime/io-stmt.cpp
===================================================================
--- flang/runtime/io-stmt.cpp
+++ flang/runtime/io-stmt.cpp
@@ -325,10 +325,9 @@
if (mutableModes().nonAdvancing) {
// Make effects of positioning past the last Emit() visible with blanks.
std::int64_t n{unit().positionInRecord - unit().furthestPositionInRecord};
- unit().positionInRecord = unit().furthestPositionInRecord;
while (n-- > 0 && unit().Emit(" ", 1, 1, *this)) {
}
- unit().leftTabLimit = unit().furthestPositionInRecord;
+ unit().leftTabLimit = unit().positionInRecord;
} else {
unit().AdvanceRecord(*this);
}
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