Re: [gentoo-user] [OT] program compiled with libcrypt on Raspberry PI (running Gentoo) hangs when run

[Dan Johansson]

On 26.06.2016 21:25, Dan Johansson wrote:
> On 26.06.2016 18:19, Meino.Cramer@×××.de wrote:
>> Dan Johansson <Dan.Johansson@×××.nu> [16-06-26 18:12]:
>>> The following code snippet compiles find but when run it just hangs forever:
>>>
>>> $ cat x.c
>>> #include <stdio.h>
>>> #include <unistd.h>
>>> #include <crypt.h>
>>>
>>> int main() {
>>>         printf("Running test\n");
>>>         char *encrypted = crypt("blablabla","ab");
>>>         if(!encrypted || strcmp(encrypted,"ab.h7fshjf89f")) {
>>>                 printf("Fail\n");
>>>         } else {
>>>                 printf("OK\n");
>>>         }
>>> }
>>>
>>> $ gcc -o xout x.c -lcrypt
>>>
>>> $ ./xout
>>> Running test
>>>
>>> <here the program just hangs and needs to be killed with ^C>
>>>
>>> The same code runs fine on my desktop.
>>> Any suggestions what could be my problem?
>>>
>>> --
>> Hi Dan,
>>
>> this is just a shot in the dark and most likely I will miss the
>> target...but...
>>
>> Off what kind of memory you are running this code?
>> Das "cryot()" returns a pointer to newly acquired memory?
>> May be this memory is not RAM but flash/EEPROM?
>> If crypt() expects already allocated memory at the
>> pointers adress this may work on a PC because its
>> short and the stack is relatively large and you hit
>> nothing ... so it runs accidentally (so to say) and
>> fails on a Raspi...
>>
>> Only some random thoughts...
>
> It's running in "normal" RAM. And I think if it was something like that
> other software would also have problem, which it has not.

I did an "emerge --oneshot sys-libs/glibc" and, voila, now it works.

Sorry for the waste of bandwidth.

-- 
Dan Johansson
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