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[SR-947] Confusing error with swiftc if -o argument is directory #43559

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swift-ci opened this issue Mar 15, 2016 · 3 comments
Open

[SR-947] Confusing error with swiftc if -o argument is directory #43559

swift-ci opened this issue Mar 15, 2016 · 3 comments
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compiler The Swift compiler in itself feature A feature request or implementation improvement legacy driver Area → compiler: the integrated C++ legacy driver. Succeeded by the swift-driver project

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@swift-ci
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Previous ID SR-947
Radar rdar://problem/15975285
Original Reporter dbokser (JIRA User)
Type Improvement

Attachment: Download

Additional Detail from JIRA
Votes 0
Component/s Compiler
Labels Improvement, Driver
Assignee None
Priority Medium

md5: 353e17676ab0f8589148ea7012e37ce2

is duplicated by:

Issue Description:

If the the directory "test" exists and the following command is run:

swiftc test.swift

or more explicitly:
swiftc test.swift -o test

Then this error is outputted:
ld: can't open output file for writing: test, errno=21 for architecture x86_64
<unknown>:0: error: link command failed with exit code 1 (use -v to see invocation)

(Note: -v doesn't provide anything helpful). It was only after Googling that I discovered that errno 21 is already existing directory.

It would be nice to have a better error message like "Cannot create executable `test` because directory `test` already exists."
@belkadan
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The other option would be to use the same inferred name we would have used (the module name or "main"), but to put the output in the specified directory.

@modocache
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modocache mannequin commented Nov 18, 2016

This issue could be considered a subset of https://bugs.swift.org/browse/SR-2399. Maybe we should merge the two?

@belkadan
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Good call, marked that as a dup.

@swift-ci swift-ci transferred this issue from apple/swift-issues Apr 25, 2022
@AnthonyLatsis AnthonyLatsis added the feature A feature request or implementation label Nov 12, 2022
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compiler The Swift compiler in itself feature A feature request or implementation improvement legacy driver Area → compiler: the integrated C++ legacy driver. Succeeded by the swift-driver project
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@belkadan @swift-ci @AnthonyLatsis