Re: [PATCH] Add constant folding support for next{after,toward}{,f,l} (PR libstdc++/85466)

[Tom de Vries]

On 04/21/2018 07:36 PM, Jakub Jelinek wrote:
        * gcc.dg/nextafter-2.c: New test.

Hi,

FTR, I ran into a link error "unresolved symbol nexttowardf" using the 
standalone nvptx toolchain:
...
PASS: gcc.dg/nextafter-1.c (test for excess errors)
PASS: gcc.dg/nextafter-1.c execution test
PASS: gcc.dg/nextafter-1.c scan-tree-dump-not optimized "nextafter"
PASS: gcc.dg/nextafter-1.c scan-tree-dump-not optimized "nexttoward"
FAIL: gcc.dg/nextafter-2.c (test for excess errors)
UNRESOLVED: gcc.dg/nextafter-2.c compilation failed to produce executable
PASS: gcc.dg/nextafter-3.c (test for excess errors)
PASS: gcc.dg/nextafter-3.c execution test
PASS: gcc.dg/nextafter-3.c scan-tree-dump-not optimized "nextafter"
PASS: gcc.dg/nextafter-3.c scan-tree-dump-not optimized "nexttoward"
PASS: gcc.dg/nextafter-4.c (test for excess errors)
PASS: gcc.dg/nextafter-4.c execution test
PASS: gcc.dg/nextafter-4.c scan-tree-dump-not optimized "nextafter"
PASS: gcc.dg/nextafter-4.c scan-tree-dump-not optimized "nexttoward"
...

This failure exposes a newlib bug. I've submitted a patch here ( 
https://sourceware.org/ml/newlib/2018/msg00350.html ).

Thanks,
- Tom