Gentoo Archives: gentoo-user

From: Meino.Cramer@×××.de
To: gentoo-user@l.g.o
Subject: Re: [gentoo-user] [OT] program compiled with libcrypt on Raspberry PI (running Gentoo) hangs when run
Date: Sun, 26 Jun 2016 16:19:51
Message-Id: 20160626161937.GC23516@solfire
In Reply to: [gentoo-user] [OT] program compiled with libcrypt on Raspberry PI (running Gentoo) hangs when run by Dan Johansson
1 Dan Johansson <Dan.Johansson@×××.nu> [16-06-26 18:12]:
2 > The following code snippet compiles find but when run it just hangs forever:
3 >
4 > $ cat x.c
5 > #include <stdio.h>
6 > #include <unistd.h>
7 > #include <crypt.h>
8 >
9 > int main() {
10 > printf("Running test\n");
11 > char *encrypted = crypt("blablabla","ab");
12 > if(!encrypted || strcmp(encrypted,"ab.h7fshjf89f")) {
13 > printf("Fail\n");
14 > } else {
15 > printf("OK\n");
16 > }
17 > }
18 >
19 > $ gcc -o xout x.c -lcrypt
20 >
21 > $ ./xout
22 > Running test
23 >
24 > <here the program just hangs and needs to be killed with ^C>
25 >
26 > The same code runs fine on my desktop.
27 > Any suggestions what could be my problem?
28 >
29 > --
30 > Dan Johansson, <http://www.dmj.nu>
31 > ***************************************************
32 > This message is printed on 100% recycled electrons!
33 > ***************************************************
34 >
35
36 Hi Dan,
37
38 this is just a shot in the dark and most likely I will miss the
39 target...but...
40
41 Off what kind of memory you are running this code?
42 Das "cryot()" returns a pointer to newly acquired memory?
43 May be this memory is not RAM but flash/EEPROM?
44 If crypt() expects already allocated memory at the
45 pointers adress this may work on a PC because its
46 short and the stack is relatively large and you hit
47 nothing ... so it runs accidentally (so to say) and
48 fails on a Raspi...
49
50 Only some random thoughts...
51
52 Good luck!
53 Best regards,
54 Meino

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