tree 31853700ee4b5e60a8d1755ffcbff74c8a2b1e35
parent ba52a09abe3f3a2323dd7df3fe1739630e054077
author Orlando Cazalet-Hyams <orlando.hyams@sony.com> 1724937122 +0100
committer GitHub <noreply@github.com> 1724937122 +0100
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[RemoveDIs] Fix spliceDebugInfo splice-to-end edge case (#105671)

Fix #105571 which demonstrates an end() iterator dereference when
performing a non-empty splice to end() from a region that ends at
Src::end().

Rather than calling Instruction::adoptDbgRecords from Dest, create a marker
(which takes an iterator) and absorbDebugValues onto that. The "absorb" variant
doesn't clean up the source marker, which in this case we know is a trailing
marker, so we have to do that manually.