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[gcov] Emit errors when opening the notes file fails

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No time to write a test case, on to the next bug. =P

Discovered while investigating PR34659

llvm-svn: 313571
This commit is contained in:
Reid Kleckner 2017-09-18 21:31:48 +00:00
parent 0ac9524c99
commit 1aa4ea8104
1 changed files with 6 additions and 0 deletions
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6
llvm/lib/Transforms/Instrumentation/GCOVProfiling.cpp
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@ -519,6 +519,12 @@ void GCOVProfiler::emitProfileNotes() {
std::error_code EC;
raw_fd_ostream out(mangleName(CU, GCovFileType::GCNO), EC, sys::fs::F_None);
if (EC) {
Ctx->emitError(Twine("failed to open coverage notes file for writing: ") +
EC.message());
continue;
}
std::string EdgeDestinations;
unsigned FunctionIdent = 0;