3 Sep
2019
3 Sep
'19
7:31 p.m.
On Mon, Sep 02, 2019 at 10:55:53PM -0700, Nathan Chancellor wrote:
On Thu, Aug 29, 2019 at 09:59:48AM +0000, David Laight wrote:
From: Nathan Chancellor
Sent: 28 August 2019 19:45
...
However, I think that -fno-builtin-* would be appropriate here because we are providing our own setjmp implementation, meaning clang should not be trying to do anything with the builtin implementation like building a declaration for it.
Isn't implementing setjmp impossible unless you tell the compiler that you function is 'setjmp-like' ?
No idea, PowerPC is the only architecture that does such a thing.
Since setjmp can return more than once, yes, exciting things can happen if you do not tell the compiler about this.
Segher