Mailing List Archive: segfault in GCRYCTL_SET_THREAD

segfault in GCRYCTL_SET_THREAD_CBS

Oct 27, 2009, 3:50 PM

Post #1 of 3 (1161 views)

The attached simple program tries to initialize gcrypt with pthread
support. On my debian system (testing/unstable, libgcrypt11 1.4.4-4)
this triggers a segfault during the call to
gcry_control(GCRYCTL_SET_THREAD_CBS).

What am i doing wrong? What have i missed?

--dkg

Re: segfault in GCRYCTL_SET_THREAD_CBS [ In reply to ]

wk at gnupg

Oct 28, 2009, 6:54 AM

Post #2 of 3 (1133 views)

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On Tue, 27 Oct 2009 23:50, dkg@fifthhorseman.net said:

- ret = gcry_control(GCRYCTL_SET_THREAD_CBS, gcry_threads_pthread);
+ ret = gcry_control(GCRYCTL_SET_THREAD_CBS, &gcry_threads_pthread);

This is the usual problem with general purpose ioctl-alike fucntions:
You don't have any type checking. I added examples to the docs.

Salam-Shalom,

Werner

--
Die Gedanken sind frei. Ausnahmen regelt ein Bundesgesetz.

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Re: segfault in GCRYCTL_SET_THREAD_CBS [ In reply to ]

dkg at fifthhorseman

Oct 28, 2009, 8:04 AM

Post #3 of 3 (1128 views)

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On 10/28/2009 09:54 AM, Werner Koch wrote:
> On Tue, 27 Oct 2009 23:50, dkg@fifthhorseman.net said:
>
> - ret = gcry_control(GCRYCTL_SET_THREAD_CBS, gcry_threads_pthread);
> + ret = gcry_control(GCRYCTL_SET_THREAD_CBS, &gcry_threads_pthread);
>
> This is the usual problem with general purpose ioctl-alike fucntions:
> You don't have any type checking. I added examples to the docs.

Thanks, Werner. That does fix it for me, and it seems obvious in
retrospect ;) I suspect having the examples in the docs will be useful.

Regards,

--dkg

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