Merge pull request #66802 from al45tair/eng/PR-110846253-5.9

al45tair · web-flow · commit 0a90700c8ef8 · 2023-06-21T17:24:18.000+01:00
[Backtracing] Fix crash in CrashAsync test on Ubuntu 18.04.
diff --git a/stdlib/public/Backtracing/FramePointerUnwinder.swift b/stdlib/public/Backtracing/FramePointerUnwinder.swift
@@ -161,7 +161,7 @@ public struct FramePointerUnwinder<C: Context, M: MemoryReader>: Sequence, Itera
           return nil
         }
 
-        if next <= fp {
+        if next <= fp || pc == 0 {
           return nil
         }
 

Original file line number	Diff line number	Diff line change
`@@ -161,7 +161,7 @@ public struct FramePointerUnwinder<C: Context, M: MemoryReader>: Sequence, Itera`
`161`	`161`	`return nil`
`162`	`162`	`}`
`163`	`163`
`164`		`- if next <= fp {`
	`164`	`+ if next <= fp \|\| pc == 0 {`
`165`	`165`	`return nil`
`166`	`166`	`}`
`167`	`167`