Previous discussion: https://news.ycombinator.com/item?id=30238928

To inline my comment in the previous thread:

Just for some context, the MPW C compiler that produced those messages was actually not developed internally at Apple, but was rather done by Green Hills Software [1] under contract as mentioned on the wikipedia page [2] and its source [3] which is funnily enough about this exact same topic.

[1] https://en.m.wikipedia.org/wiki/Green_Hills_Software

[2] https://en.m.wikipedia.org/wiki/Macintosh_Programmer%27s_Wor...

[3] https://web.archive.org/web/20140528005901/http://lists.appl...