[flang][runtime] Flush output before INQUIRE(..., SIZE=) (#75379)

Ensure that any buffered data has tranferred to an external unit before measuring its file size.
llvm · Dec 26, 2023 · 7b50176 · 7b50176
1 parent 1794b61
commit 7b50176
Showing 1 changed file with 1 addition and 0 deletions.
diff --git a/flang/runtime/io-stmt.cpp b/flang/runtime/io-stmt.cpp
@@ -1219,6 +1219,7 @@ bool InquireUnitState::Inquire(
   case HashInquiryKeyword("SIZE"):
     result = -1;
     if (unit().IsConnected()) {
+      unit().FlushOutput(*this);
       if (auto size{unit().knownSize()}) {
         result = *size;
       }