Building the pu branch at commit 8b49f5c076c using Travis-Ci all linux builds worked but the two OSX builds failed with: CC ident.o CC json-writer.o json-writer.c:123:38: error: format specifies type 'uintmax_t' (aka 'unsigned long') but the argument has type 'uint64_t' (aka 'unsigned long long') [-Werror,-Wformat] strbuf_addf(&jw->json, ":%"PRIuMAX, value); json-writer.c:228:37: error: format specifies type 'uintmax_t' (aka 'unsigned long') but the argument has type 'uint64_t' (aka 'unsigned long long') [-Werror,-Wformat] strbuf_addf(&jw->json, "%"PRIuMAX, value); Corrected in Patch 1/1 by casting value to uintmax_t. Wink Saville (1): json-writer: add cast to uintmax_t json-writer.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) -- 2.16.2