| Summary: | test/test-bezier.c dumps core on arm64/ppc/ppc64el | ||||||
|---|---|---|---|---|---|---|---|
| Product: | xorg | Reporter: | Timo Aaltonen <tjaalton> | ||||
| Component: | Input/libinput | Assignee: | Peter Hutterer <peter.hutterer> | ||||
| Status: | RESOLVED FIXED | QA Contact: | Xorg Project Team <xorg-team> | ||||
| Severity: | normal | ||||||
| Priority: | medium | CC: | peter.hutterer, rohini9889 | ||||
| Version: | unspecified | ||||||
| Hardware: | Other | ||||||
| OS: | All | ||||||
| Whiteboard: | |||||||
| i915 platform: | i915 features: | ||||||
| Attachments: |
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This appears to be a result of optimization.
With -O0
Breakpoint 1, test_nonzero_x_linear () at test-bezier.c:157
157 assert(bezier[x] > bezier[x-1]);
(gdb) p bezier
$6 = {0 <repeats 409 times>, 1, 2, 4, 5, 7, 9, 10, 12, 14, 15, 17, 19, 21, 22,
With -O2:
(gdb) p bezier
$1 = {0 <repeats 410 times>, 1, 3, 5, 7, 9, 10, 12, 14, 15, 17, 19, 20, 22,
That extra 0 at -O2 triggers the bug. There are other entries that don't match either, but only this one would trigger the bug.
yep, that works, thanks commit 72fb6d304eec6eeeac6b42963c2729134d56de57 Author: Peter Hutterer <peter.hutterer@who-t.net> Date: Tue Feb 28 14:45:29 2017 +1000 test: fix a test failure on ppc64(le) and aarch64 |
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Created attachment 129969 [details] build log on ppc Hi, 0.24.0 added a new test for wacom, but running it fails on (at least) these archs. Build log attached.