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| author | Tamar Christina <tamar@zhox.com> | 2017-10-03 13:37:52 -0400 |
|---|---|---|
| committer | Ben Gamari <ben@smart-cactus.org> | 2017-10-03 15:16:27 -0400 |
| commit | ec9ac20d0964c9f1323105b5a2df24f50d4fe3ef (patch) | |
| tree | 5e21ede1766511cc09b1eb46e7f571d36f3c34ae /includes/rts | |
| parent | 55001c0c9934de2cf94d3879cea20c0faf73695c (diff) | |
| download | haskell-ec9ac20d0964c9f1323105b5a2df24f50d4fe3ef.tar.gz | |
Add ability to produce crash dumps on Windows
It's often hard to debug things like segfaults on Windows,
mostly because gdb isn't always of use and users don't know
how to effectively use it.
This patch provides a way to create a crash drump by passing
`+RTS --generate-crash-dumps` as an option. If any unhandled
exception is triggered a dump is made that contains enough
information to be able to diagnose things successfully.
Currently the created dumps are a bit big because I include
all registers, code and threads information.
This looks like
```
$ testsuite/tests/rts/derefnull.run/derefnull.exe +RTS
--generate-crash-dumps
Access violation in generated code when reading 0000000000000000
Crash dump created. Dump written to:
E:\msys64\tmp\ghc-20170901-220250-11216-16628.dmp
```
Test Plan: ./validate
Reviewers: austin, hvr, bgamari, erikd, simonmar
Reviewed By: bgamari, simonmar
Subscribers: rwbarton, thomie
Differential Revision: https://phabricator.haskell.org/D3912
Diffstat (limited to 'includes/rts')
| -rw-r--r-- | includes/rts/Flags.h | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/includes/rts/Flags.h b/includes/rts/Flags.h index e67f176560..4cc267072d 100644 --- a/includes/rts/Flags.h +++ b/includes/rts/Flags.h @@ -190,6 +190,7 @@ typedef struct _MISC_FLAGS { Time tickInterval; /* units: TIME_RESOLUTION */ bool install_signal_handlers; bool install_seh_handlers; + bool generate_dump_file; bool machineReadable; StgWord linkerMemBase; /* address to ask the OS for memory * for the linker, NULL ==> off */ |