pthread_create segmentation fault with pthread_create.c 552












0















I am getting a segmentation fault right after I am creating a thread. The thread that I am creating is globally defined list. gdb descriptioncode Stdout does not print the print statement right after pthread_create. Would appreciate any help










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  • 2





    can you edit question with code snippet ? what you doing ? like mcve

    – ntshetty
    Nov 22 '18 at 3:35








  • 1





    Welcome to Stack Overflow. Please read the About and How to Ask pages now, especially the latter. We'll need an MCVE (Minimal, Complete, and Verifiable example) included in the question; sending us to somewhere offsite in an image isn't OK — we can't copy the code and experiment with it, all else apart.

    – Jonathan Leffler
    Nov 22 '18 at 3:59











  • t1 is probably NULL [or points to random memory] on your first pthread_create call, as it is the only value you pass in that could cause a segfault, but it's difficult to know without the rest of your code.

    – Craig Estey
    Nov 22 '18 at 5:50











  • Thank you all for the suggestions. Will be better in the future. @CraigEstey You were right. I forgot to malloc what t1 was equal to. Thank you for pointing this out!

    – treatyoself
    Nov 23 '18 at 16:34
















0















I am getting a segmentation fault right after I am creating a thread. The thread that I am creating is globally defined list. gdb descriptioncode Stdout does not print the print statement right after pthread_create. Would appreciate any help










share|improve this question


















  • 2





    can you edit question with code snippet ? what you doing ? like mcve

    – ntshetty
    Nov 22 '18 at 3:35








  • 1





    Welcome to Stack Overflow. Please read the About and How to Ask pages now, especially the latter. We'll need an MCVE (Minimal, Complete, and Verifiable example) included in the question; sending us to somewhere offsite in an image isn't OK — we can't copy the code and experiment with it, all else apart.

    – Jonathan Leffler
    Nov 22 '18 at 3:59











  • t1 is probably NULL [or points to random memory] on your first pthread_create call, as it is the only value you pass in that could cause a segfault, but it's difficult to know without the rest of your code.

    – Craig Estey
    Nov 22 '18 at 5:50











  • Thank you all for the suggestions. Will be better in the future. @CraigEstey You were right. I forgot to malloc what t1 was equal to. Thank you for pointing this out!

    – treatyoself
    Nov 23 '18 at 16:34














0












0








0








I am getting a segmentation fault right after I am creating a thread. The thread that I am creating is globally defined list. gdb descriptioncode Stdout does not print the print statement right after pthread_create. Would appreciate any help










share|improve this question














I am getting a segmentation fault right after I am creating a thread. The thread that I am creating is globally defined list. gdb descriptioncode Stdout does not print the print statement right after pthread_create. Would appreciate any help







c multithreading






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asked Nov 22 '18 at 3:28









treatyoselftreatyoself

55




55








  • 2





    can you edit question with code snippet ? what you doing ? like mcve

    – ntshetty
    Nov 22 '18 at 3:35








  • 1





    Welcome to Stack Overflow. Please read the About and How to Ask pages now, especially the latter. We'll need an MCVE (Minimal, Complete, and Verifiable example) included in the question; sending us to somewhere offsite in an image isn't OK — we can't copy the code and experiment with it, all else apart.

    – Jonathan Leffler
    Nov 22 '18 at 3:59











  • t1 is probably NULL [or points to random memory] on your first pthread_create call, as it is the only value you pass in that could cause a segfault, but it's difficult to know without the rest of your code.

    – Craig Estey
    Nov 22 '18 at 5:50











  • Thank you all for the suggestions. Will be better in the future. @CraigEstey You were right. I forgot to malloc what t1 was equal to. Thank you for pointing this out!

    – treatyoself
    Nov 23 '18 at 16:34














  • 2





    can you edit question with code snippet ? what you doing ? like mcve

    – ntshetty
    Nov 22 '18 at 3:35








  • 1





    Welcome to Stack Overflow. Please read the About and How to Ask pages now, especially the latter. We'll need an MCVE (Minimal, Complete, and Verifiable example) included in the question; sending us to somewhere offsite in an image isn't OK — we can't copy the code and experiment with it, all else apart.

    – Jonathan Leffler
    Nov 22 '18 at 3:59











  • t1 is probably NULL [or points to random memory] on your first pthread_create call, as it is the only value you pass in that could cause a segfault, but it's difficult to know without the rest of your code.

    – Craig Estey
    Nov 22 '18 at 5:50











  • Thank you all for the suggestions. Will be better in the future. @CraigEstey You were right. I forgot to malloc what t1 was equal to. Thank you for pointing this out!

    – treatyoself
    Nov 23 '18 at 16:34








2




2





can you edit question with code snippet ? what you doing ? like mcve

– ntshetty
Nov 22 '18 at 3:35







can you edit question with code snippet ? what you doing ? like mcve

– ntshetty
Nov 22 '18 at 3:35






1




1





Welcome to Stack Overflow. Please read the About and How to Ask pages now, especially the latter. We'll need an MCVE (Minimal, Complete, and Verifiable example) included in the question; sending us to somewhere offsite in an image isn't OK — we can't copy the code and experiment with it, all else apart.

– Jonathan Leffler
Nov 22 '18 at 3:59





Welcome to Stack Overflow. Please read the About and How to Ask pages now, especially the latter. We'll need an MCVE (Minimal, Complete, and Verifiable example) included in the question; sending us to somewhere offsite in an image isn't OK — we can't copy the code and experiment with it, all else apart.

– Jonathan Leffler
Nov 22 '18 at 3:59













t1 is probably NULL [or points to random memory] on your first pthread_create call, as it is the only value you pass in that could cause a segfault, but it's difficult to know without the rest of your code.

– Craig Estey
Nov 22 '18 at 5:50





t1 is probably NULL [or points to random memory] on your first pthread_create call, as it is the only value you pass in that could cause a segfault, but it's difficult to know without the rest of your code.

– Craig Estey
Nov 22 '18 at 5:50













Thank you all for the suggestions. Will be better in the future. @CraigEstey You were right. I forgot to malloc what t1 was equal to. Thank you for pointing this out!

– treatyoself
Nov 23 '18 at 16:34





Thank you all for the suggestions. Will be better in the future. @CraigEstey You were right. I forgot to malloc what t1 was equal to. Thank you for pointing this out!

– treatyoself
Nov 23 '18 at 16:34












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