[Pkg-haskell-maintainers] Bug#740010: catching HttpExceptions doesn't work in DAV monad

[Joey Hess]

Package: libghc-dav-dev
Version: 0.6.1-1
Severity: normal

It seems that http exceptions get thrown as some kind of
stringy-exception type, accidentially. 

I would expect the attached testcase to print
"existsDav returned <some error>"
but instead it crashes with an uncaught exception.

Note that the implementation of mkCol in DAV itself uses a similar
catchJust, so is probably affected by this bug.

-- System Information:
Debian Release: jessie/sid
  APT prefers unstable
  APT policy: (500, 'unstable'), (1, 'experimental')
Architecture: amd64 (x86_64)
Foreign Architectures: i386

Kernel: Linux 3.10-3-amd64 (SMP w/4 CPU cores)
Locale: LANG=en_US.utf8, LC_CTYPE=en_US.utf8 (charmap=UTF-8)
Shell: /bin/sh linked to /bin/dash

Versions of packages libghc-dav-dev depends on:
ii  ghc [libghc-containers-dev-0.5.0.0-ab1da]                    7.6.3-7
ii  libc6                                                        2.18-1
pn  libghc-base-dev-4.6.0.1-8aa5d                                <none>
pn  libghc-bytestring-dev-0.10.0.2-4f932                         <none>
ii  libghc-case-insensitive-dev [libghc-case-insensitive-dev-1.  1.1.0.2-1
ii  libghc-either-dev [libghc-either-dev-4.1-d240c]              4.1-1+b1
ii  libghc-errors-dev [libghc-errors-dev-1.4.5-31759]            1.4.5-1
ii  libghc-http-client-dev [libghc-http-client-dev-0.2.0.1-0720  0.2.0.1-2+b1
ii  libghc-http-client-tls-dev [libghc-http-client-tls-dev-0.2.  0.2.0.0-1+b2
ii  libghc-http-types-dev [libghc-http-types-dev-0.8.3-4e8ed]    0.8.3-1+b2
ii  libghc-lens-dev [libghc-lens-dev-3.10-03619]                 3.10-1+b3
ii  libghc-lifted-base-dev [libghc-lifted-base-dev-0.2.0.3-635d  0.2.0.3-2+b1
ii  libghc-monad-control-dev [libghc-monad-control-dev-0.3.2.2-  0.3.2.2-1
pn  libghc-mtl-dev-2.1.2-94c72                                   <none>
ii  libghc-transformers-base-dev [libghc-transformers-base-dev-  0.4.1-5
pn  libghc-transformers-dev-0.3.0.0-ff2bb                        <none>
ii  libghc-xml-conduit-dev [libghc-xml-conduit-dev-1.1.0.9-f8c7  1.1.0.9-1+b4
ii  libghc-xml-hamlet-dev [libghc-xml-hamlet-dev-0.4.0.4-8fcf1]  0.4.0.4-2+b7
ii  libicu52                                                     52.1-3
ii  zlib1g                                                       1:1.2.8.dfsg-1

libghc-dav-dev recommends no packages.

Versions of packages libghc-dav-dev suggests:
ii  libghc-dav-doc   0.6.1-1
ii  libghc-dav-prof  0.6.1-1

-- no debconf information

-- 
see shy jo
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