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ac9b6078f3
The function's new implementation from r340583 had a bug in it that could cause an invalid scope to be generated when merging two DILocations with no common ancestor scope. This patch detects this situation and picks the scope of the first location. This is not perfect, because the scope is misleading, but on the other hand, this will be a line 0 location. rdar://problem/43687474 Differential Revision: https://reviews.llvm.org/D51238 llvm-svn: 340672
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