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Description
Description
Issue
I am running a build with -emit-bc & -lto=llvm-full swift compiler flags to reduce app size but this results in Invalid dSYM.
Running dwarfdump --verify //path-to.dSYM shows error: invalid DIE reference <some-ref>. Offset is in between DIEs: This is on Xcode 16.3
Reproduction
Attaching repro project - BazelDemoHelloWorld (1).zip
- Download the attachment and unzip
- Open BazelDemoHelloWorld.xcodeproj
- Select BazelDemoHelloWorld scheme from Xcode's selector and hit build or run, it would produce artifacts in DerivedData
- then run `dwarfdump --verify` on the generated dSYM in the derived Data. Adding one of the complete errors from the attached sample.
Verifying unit: 30 / 205, "lottie-ios/Sources/Private/CoreAnimation/Layers/PreCompLayer.swift"
error: invalid DIE reference 0x0005d67f. Offset is in between DIEs:
0x0005dfdf: DW_TAG_subprogram [49] (0x0005d6b6)
DW_AT_linkage_name [DW_FORM_strp] ( .debug_str[0x0009abac] = "$sSa11_getElement_20wasNativeTypeChecked22matchingSubscriptCheckxSi_Sbs16_DependenceTokenVtF6Lottie14ShapeItemLayerC0N0V_Tg5")
DW_AT_type [DW_FORM_ref4] (cu + 0x0000 => {0x0005d67f})
DW_AT_artificial [DW_FORM_flag_present] (true)
DW_AT_APPLE_optimized [DW_FORM_flag_present] (true)
DW_AT_inline [DW_FORM_data1] (DW_INL_inlined)
0x0005e149: DW_TAG_subprogram [38] (0x0005e060)
DW_AT_linkage_name [DW_FORM_strp] ( .debug_str[0x0009af88] = "$sSayxSicig6Lottie14ShapeItemLayerC0C0V_Tg5")
DW_AT_name [DW_FORM_strp] ( .debug_str[0x000050bd] = "subscript.get")
DW_AT_type [DW_FORM_ref4] (cu + 0x0000 => {0x0005d67f})
DW_AT_APPLE_optimized [DW_FORM_flag_present] (true)
DW_AT_inline [DW_FORM_data1] (DW_INL_inlined)
Expected behavior
Build should produce valid dSYM and Running dwarfdump --verify shouldn't show any errors.
Environment
swift-driver version: 1.120.5 Apple Swift version 6.1 (swiftlang-6.1.0.110.21 clang-1700.0.13.3)
Target: arm64-apple-macosx15.0
And Xcode 16.3
Additional information
No response