[SYCL][ClangLinkerWrapper] Fix read of invalid memory #15472
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Signed-off-by: Sarnie, Nick <nick.sarnie@intel.com>
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asudarsa
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Sep 25, 2024
| // the file. | ||
| StringRef UnbundledArchiveList = | ||
| Args.MakeArgString((*ObjList)->getBuffer()); | ||
| UnbundledArchiveList.split(ObjectFilePaths, '\n', /*MaxSplit=*/-1, |
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Where will this variable be used? Not a blocking question.
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Thanks for the review. It's used here, we immediately split it into the ObjectFilePaths vector .
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Ah..of course..I was naive and was looking for this variable on the RHS of an assignment statement. :-(. Thinking more, may be not so naive. I was just wondering where else we would be using UnbundledArchiveList that we needed to store it.
asudarsa
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Sep 25, 2024
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The problem was the buffer gets freed when we go out of the
ifbecause theunique_ptris created there, so just make a copy that will stay alive as long as we need it. Confirmed fix with valgrind.This is already tested by
sycl/test-e2e/NewOffloadDriver/multisource.cppand it fails sporadically which led me to this fix.