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-rw-r--r--include/c11/threads_posix.h2
-rw-r--r--include/c11/threads_win32.h2
2 files changed, 4 insertions, 0 deletions
diff --git a/include/c11/threads_posix.h b/include/c11/threads_posix.h
index 7e96715c24..f9c165df4e 100644
--- a/include/c11/threads_posix.h
+++ b/include/c11/threads_posix.h
@@ -27,7 +27,9 @@
* DEALINGS IN THE SOFTWARE.
*/
#include <stdlib.h>
+#ifndef assert
#include <assert.h>
+#endif
#include <limits.h>
#include <errno.h>
#include <unistd.h>
diff --git a/include/c11/threads_win32.h b/include/c11/threads_win32.h
index d4c2a72d27..5298a84321 100644
--- a/include/c11/threads_win32.h
+++ b/include/c11/threads_win32.h
@@ -26,7 +26,9 @@
* ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
* DEALINGS IN THE SOFTWARE.
*/
+#ifndef assert
#include <assert.h>
+#endif
#include <limits.h>
#include <errno.h>
#include <process.h> // MSVCRT