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Fix clang crash with -print-changed=dot-cfg #148844

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@cabbaken cabbaken commented Jul 15, 2025

Remove unnecessary comparison of Before and After DCData, which will cause an error when create DotCfgDiff.

Fixes: #148579

Remove unnecessary comparison of Before and After `DCData`,
which will cause an error when create `DotCfgDiff`.

Signed-off-by: Ruoyu Qiu <[email protected]>
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I'm sorry I forgot to include a test. I will add it later.

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[Clang] Clang crashed when compiling with -mllvm -print-changed=dot-cfg
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