Thanks. Clearly your pthread_t type is not a scalar type. I found this post that might be relevant: http://sourceware.org/ml/pthreads-win32/2011/msg00000.html

Can you think of a way to define curl_thread_t_null differently so that the code works for you and other pthread implementations?

Alternatively we change the internal API to not do comparisons with the pthread_t value, which seems to be the proper way to do this.

Are you able to provide a patch

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** [bugs:#1314] Build failure cross-compiling for x86_64-w64-mingw32 target**
**Status:** open
**Created:** Mon Dec 23, 2013 05:01 PM UTC by Luke-Jr
**Last Updated:** Mon Dec 23, 2013 05:01 PM UTC
**Owner:** Daniel Stenberg
OS: Gentoo stable x86 (32-bit)
Target: crossdev x86_64-w64-mingw32 (MingW64)
Versions affected: at least 7.33.0 and 7.34.0
curl_threads.c: In function 'Curl_thread_create':
curl_threads.c:69:5: error: conversion to non-scalar type requested
curl_threads.c:76:5: error: conversion to non-scalar type requested
curl_threads.c: In function 'Curl_thread_destroy':
curl_threads.c:84:3: error: conversion to non-scalar type requested
curl_threads.c: In function 'Curl_thread_join':
curl_threads.c:92:3: error: conversion to non-scalar type requested
---
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