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[flang] Fix handling of files without terminating newlines. 

Reviewers: sscalpone

Subscribers: llvm-commits

Tags: #llvm

Differential Revision: https://reviews.llvm.org/D78578
This commit is contained in:
David Truby 2020-04-21 19:45:43 +01:00
parent 9f1e81f1c0
commit b547e1a4d1
2 changed files with 16 additions and 5 deletions
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17
flang/lib/Parser/source.cpp
View File

@ -127,12 +127,19 @@ bool SourceFile::ReadStandardInput(llvm::raw_ostream &error) {
}
void SourceFile::ReadFile() {
if (buf_->getBuffer().size() == 0) {
Close();
buf_ = llvm::WritableMemoryBuffer::getNewUninitMemBuffer(1);
buf_->getBuffer()[0] = '\n';
}
buf_end_ = RemoveCarriageReturns(buf_->getBuffer());
if (content().size() == 0 || content().back() != '\n') {
// Don't bother to copy if we have spare memory
if (content().size() >= buf_->getBufferSize()) {
auto tmp_buf{llvm::WritableMemoryBuffer::getNewUninitMemBuffer(
content().size() + 1)};
llvm::copy(content(), tmp_buf->getBufferStart());
Close();
buf_ = std::move(tmp_buf);
}
buf_end_++;
buf_->getBuffer()[buf_end_ - 1] = '\n';
}
IdentifyPayload();
RecordLineStarts();
}

4
flang/test/Semantics/missing_newline.f90 Normal file
View File

@ -0,0 +1,4 @@
! RUN: echo -n "end program" > %t.f90
! RUN: %f18 -fparse-only %t.f90
! RUN: echo -ne "\rend program" > %t.f90
! RUN: %f18 -fparse-only %t.f90