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[SR-5005] Swift build with -whole-module-optimization crashes following normal build #5006

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tayloraswift opened this issue May 24, 2017 · 1 comment
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[SR-5005] Swift build with -whole-module-optimization crashes following normal build #5006

tayloraswift opened this issue May 24, 2017 · 1 comment
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@tayloraswift
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Previous ID SR-5005
Radar None
Original Reporter @Kelvin13
Type Bug
Status Closed
Resolution Duplicate

Attachment: Download

Environment

Ubuntu 17.04, swift-3.1-dev trunk, also tested on swift-3.1-RELEASE

Additional Detail from JIRA
Votes 0
Component/s Compiler, Package Manager
Labels Bug
Assignee None
Priority Medium

md5: f915ca50c26844dbc38d839cdeeb927e

duplicates:

  • SR-5004 Swift build with -whole-module-optimization fails

Issue Description:

When a swift build -Xswiftc -whole-module-optimization follows a normal, successful swift build, the compiler starts interpreting "unresolved identifier"s and dumps gibberish

/home/kelvin/sandbox/swift/wmo/.build/debug/wmo.build/main.swift.o:1:112: warning: integer literal is unused
H�JH�U�D��H�E��H�u�H�H�H�N�H�E�H�U�H�M��H�}�H�u�L�M�H�U�L��L�U�H�M�L��I��L�M�H�E�H�$�1�H��P]�Hello, World!S�R���<��CaT��-lswiftCore-lswiftSwiftOnoneSupportSwift version 3.1 (swift-3.1-RELEASE)/home/kelvin/sandbox/swift/wmo/Sources/main.swift/home/kelvin/sandbox/swift/wmo-emit-object /home/kelvin/sandbox/swift/wmo/Sources/main.swift -target x86_64-unknown-linux-gnu -disable-objc-interop -I /home/kelvin/sandbox/swift/wmo/.build/debug -enable-testing -g -module-cache-path /home/kelvin/sandbox/swift/wmo/.build/debug/ModuleCache -D SWIFT_PACKAGE -emit-module-doc-path /home/kelvin/sandbox/swift/wmo/.build/debug/wmo.swiftdoc -Onone -module-name wmo -emit-module-path /home/kelvin/sandbox/swift/wmo/.build/debug/wmo.swiftmodule -emit-dependencies-path /home/kelvin/sandbox/swift/wmo/.build/debug/wmo.build/main.swift.d -num-threads 8 -o /home/kelvin/sandbox/swift/wmo/.build/debug/wmo.build/main.swift.o -resource-dir /home/kelvin/devtools/swift-3.1-RELEASE/usr/lib/swiftwmo/home/kelvin/sandbox/swift/wmo/SourcesSwift/home/kelvin/devtools/swift-3.1-RELEASE/usr/lib/swift/linux/x86_64/Swift.swiftmoduleclang version 4.0.0 (git@github.com:apple/swift-clang.git 9772bf511a32353fad73e38fdfc501d5fccb50d2) (git@github.com:apple/swift-llvm.git a7c680da5182d29e2c6441d484a307b695902c64)<swift-imported-modules>mainInt32_TtVs5Int32%��
                                                                                 �|.@n:
                                                                                                      ;
                                                                                                       I?::
     ;
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            :%�t��Vf/]
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/home/kelvin/sandbox/swift/wmo/.build/debug/wmo.build/main.swift.o:1:114: error: use of unresolved identifier 'H'
H�JH�U�D��H�E��H�u�H�H�H�N�H�E�H�U�H�M��H�}�H�u�L�M�H�U�L��L�U�H�M�L��I��L�M�H�E�H�$�1�H��P]�Hello, World!S�R���<��CaT��-lswiftCore

A simple test case is attached.

Related: https://bugs.swift.org/browse/SR-5004
@belkadan
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I don't think you can just add -whole-module-optimization using -Xswiftc. The package manager has to know about it to link your project correctly. Right, @aciidb0mb3r?

@swift-ci swift-ci transferred this issue from apple/swift-issues Apr 25, 2022
@shahmishal shahmishal transferred this issue from apple/swift May 4, 2022
This issue was closed.
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@belkadan @tayloraswift