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Merged
merged 1 commit into from
Jan 26, 2018
Merged

Print inlined functions on Windows #47252

merged 1 commit into from
Jan 26, 2018

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Zoxc
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@Zoxc Zoxc commented Jan 7, 2018

Split from #45637

r? @alexcrichton

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alexcrichton reviewed Jan 8, 2018
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src/libstd/sys_common/backtrace.rs Outdated
let skipped_before = 0;
// Look for the first occurence of a panic entry point
// Skip all frames before that
let skipped_before = frames.iter().position(|frame| {
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Did these leak in by accident? I think tidy failed to compile due to these maybe?

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I forgot to commit my code...

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Can this test also be updated?

@kennytm kennytm added the S-waiting-on-author Status: This is awaiting some action (such as code changes or more information) from the author. label Jan 8, 2018
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Was it possible to update the relevant test to avoid the special-casing of msvc?

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Zoxc commented Jan 8, 2018

It looks like location information disappeared from x86-32. I'll have to look into that.

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kennytm commented Jan 17, 2018

Hi @Zoxc! Have you checked the issue of 32-bit x86?

@kennytm kennytm mentioned this pull request Jan 17, 2018
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Zoxc commented Jan 17, 2018

I checked that similar code does work for C++. There might be some issue with either the FFI or debug information Rust generates. I'll try to use the C++ code to generate a stack trace for Rust code.

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Zoxc commented Jan 25, 2018 •
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I used a pointer instead of a u64 in SymGetLineFromInlineContext, which messed up the ABI on 32-bit platforms.

@Zoxc Zoxc force-pushed the backtrace-win branch 2 times, most recently from e059019 to 5253bab Compare January 25, 2018 08:29
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Zoxc commented Jan 25, 2018

This is now ready to be merged. The backtrace test still doesn't pass because the debug information we emit is not entirely correct.

@kennytm kennytm added S-waiting-on-review Status: Awaiting review from the assignee but also interested parties. and removed S-waiting-on-author Status: This is awaiting some action (such as code changes or more information) from the author. labels Jan 25, 2018
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@bors: r+

Ok, thanks for investigating!

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bors commented Jan 25, 2018

📌 Commit 5253bab has been approved by alexcrichton

@kennytm kennytm added S-waiting-on-bors Status: Waiting on bors to run and complete tests. Bors will change the label on completion. and removed S-waiting-on-review Status: Awaiting review from the assignee but also interested parties. labels Jan 25, 2018
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bors commented Jan 25, 2018

⌛ Testing commit 5253bab with merge 2b6205e...

bors added a commit that referenced this pull request Jan 25, 2018
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Auto merge of #47252 - Zoxc:backtrace-win, r=alexcrichton
2b6205e 
Print inlined functions on Windows

Split from #45637

r? @alexcrichton
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bors commented Jan 25, 2018

💔 Test failed - status-travis

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kennytm commented Jan 25, 2018 •
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dist-various-2 failed, cannot build on CloudABI, legit.

Just a missing field.

[00:47:16] warning: dropping unsupported crate type `dylib` for target `x86_64-unknown-cloudabi`
[00:47:16] 
[00:47:19] error[E0063]: missing field `inline_context` in initializer of `sys_common::backtrace::Frame`
[00:47:19]   --> libstd/sys/cloudabi/backtrace.rs:77:29
[00:47:19]    |
[00:47:19] 77 |         cx.frames[cx.idx] = Frame {
[00:47:19]    |                             ^^^^^ missing `inline_context`
[00:47:19] 
[00:47:21] error: aborting due to previous error
[00:47:21] 
[00:47:21] error: Could not compile `std`.

@kennytm kennytm added S-waiting-on-author Status: This is awaiting some action (such as code changes or more information) from the author. and removed S-waiting-on-bors Status: Waiting on bors to run and complete tests. Bors will change the label on completion. labels Jan 25, 2018
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Zoxc commented Jan 26, 2018

@bors r=alexcrichton

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bors commented Jan 26, 2018

📌 Commit 634f8cc has been approved by alexcrichton

@kennytm kennytm added S-waiting-on-bors Status: Waiting on bors to run and complete tests. Bors will change the label on completion. and removed S-waiting-on-author Status: This is awaiting some action (such as code changes or more information) from the author. labels Jan 26, 2018
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bors commented Jan 26, 2018

⌛ Testing commit 634f8cc with merge a97cd17...

bors added a commit that referenced this pull request Jan 26, 2018
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Auto merge of #47252 - Zoxc:backtrace-win, r=alexcrichton
a97cd17 
Print inlined functions on Windows

Split from #45637

r? @alexcrichton
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bors commented Jan 26, 2018

💔 Test failed - status-appveyor

@alexcrichton alexcrichton merged commit 634f8cc into rust-lang:master Jan 26, 2018
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Gonna merge anyway since all tests passed and it's just the appveyor timeout.

@pravic pravic mentioned this pull request Apr 24, 2018
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bors pushed a commit that referenced this pull request Jun 29, 2018
@moxian
Add a fallback for stacktrace printing for older Windows versions.
d39c66b 
PR #47252 switched stack inspection functions of dbghelp.dll
to their newer alternatives that also capture inlined context.
Unfortunately, said new alternatives are not present in older
dbghelp.dll versions.
In particular Windows 7 at the time of writing has dbghelp.dll
version 6.1.7601 from 2010, that lacks StackWalkEx and friends.

Fixes #50138
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