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[llvm-mc] More meaningful error if input file doesn't exist.

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Before we just printed on stderr the program name. Now at least we
print the name of the file that doesn't exist. There's probably room
for improvement of error handling in llvm-mc (and the tools in general),
but still this is a step forward.

llvm-svn: 247518
This commit is contained in:
Davide Italiano 2015-09-13 04:09:40 +00:00
parent 21adf9726f
commit c7827d8603
1 changed files with 5 additions and 0 deletions
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5
tools/llvm-mc/llvm-mc.cpp
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@ -395,6 +395,11 @@ int main(int argc, char **argv) {
// construct the Triple object.
Triple TheTriple(TripleName);
if (InputFilename != "-" && !sys::fs::exists(InputFilename)) {
errs() << ProgName << ": '" << InputFilename << "': "
<< "No such file\n";
return 1;
}
ErrorOr<std::unique_ptr<MemoryBuffer>> BufferPtr =
MemoryBuffer::getFileOrSTDIN(InputFilename);
if (std::error_code EC = BufferPtr.getError()) {