Closed Bug 1156300 Opened 5 years ago Closed 4 years ago
Filename Case doesn't fix up directory names
MozReview Request: bug 1156300 - symbolstore.py FixFilenameCase doesn't fix up directory names. r?gps
58 bytes, text/x-review-board-request
The file links on this crash report point to 'libglesv2' when it should be 'libGLESv2': https://crash-stats.mozilla.com/report/index/0f483195-ad7b-4096-a594-47b212150404
I think nowadays we could use GetFinalPathNameByHandle: https://msdn.microsoft.com/en-us/library/windows/desktop/aa364962.aspx
This bug is lacking context, but: https://dxr.mozilla.org/mozilla-central/rev/aa90f482e16db77cdb7dea84564ea1cbd8f7f6b3/toolkit/crashreporter/tools/symbolstore.py#733 When we dump symbols from PDB files we attempt to normalize the case of source filenames to match what's on the filesystem. Visual C++ tries its hardest to make life difficult for us by using arbitrary case. Unfortunately until recently there weren't actually any APIs for getting the canonical filename case, so this is a PITA.
Who do I need to bribe to get this fixed?
I was just stymied by this bug. See https://bugzilla.mozilla.org/show_bug.cgi?id=1262351#c6.
I will fix this when I'm back home with my Windows machine on Friday.
Assignee: nobody → ted
I did `mach buildsymbols` with this patch locally, and grepping xul.sym file it produced shows lines like: ``` FILE 40997 hg:192.168.1.10//build/mozilla-central:dom/indexedDB/ActorsChild.h:d9b1a9829c8e ``` So this seems to do the trick. (Also I wrote tests for it, and they pass, so that's nice.) Try push just to sanity check I didn't break anything in weird ways.
Review commit: https://reviewboard.mozilla.org/r/45451/diff/#index_header See other reviews: https://reviewboard.mozilla.org/r/45451/
Attachment #8739945 - Flags: review?(gps)
Apparently Python 3 has os._getfinalpathname on Windows that calls this under the hood: https://hg.python.org/cpython/file/v3.5.1/Modules/posixmodule.c#l3801 That would have made this patch easier!
Comment on attachment 8739945 [details] MozReview Request: bug 1156300 - symbolstore.py FixFilenameCase doesn't fix up directory names. r?gps https://reviewboard.mozilla.org/r/45451/#review42025 ::: toolkit/crashreporter/tools/symbolstore.py:765 (Diff revision 1) > + size = ctypes.windll.kernel32.GetFinalPathNameByHandleW(handle, > + None, > + 0, > + 0) > + buf = ctypes.create_unicode_buffer(size) > + if ctypes.windll.kernel32.GetFinalPathNameByHandleW(handle, > + buf, > + size, > + 0) > 0: I would have allocated a fixed length buffer and called GetFinalPathNameByHandleW once then sliced. But meh.
https://reviewboard.mozilla.org/r/45451/#review42025 > I would have allocated a fixed length buffer and called GetFinalPathNameByHandleW once then sliced. But meh. Unfortunately this is the only sensible way to handle arbitrary path sizes. I, too, hate the Win32 API for this, but it's the best you can do with C.
(In reply to Ted Mielczarek [:ted.mielczarek] from comment #9) > https://treeherder.mozilla.org/#/jobs?repo=try&revision=dd359dac5063 I downloaded the symbols from this build to further sanity check and they look sensible: ``` FILE 174525 hg:hg.mozilla.org/try:dom/indexedDB/IndexedDatabase.h:c92a58752328 ```
I did a test crash and it looks good: https://crash-stats.mozilla.com/report/index/23ba3e17-ff30-41e8-96b9-8db122160412
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