Bug#1023649: ghc: FTBFS haskell-random powerpc (ghc Segmentation fault)

[Christian Marillat]

On 09 oct. 2023 09:32, John Paul Adrian Glaubitz <glaubitz at physik.fu-berlin.de> wrote:


[...]

> I think the interesting part would be the disassembly of
> base_GHCziFloat_floatToDigits_closure ()
> where the actual crash happened. Your disassembly seems to show parts
> of the segfault handler.

,----
| 10a19f20 <base_GHCziFloat_zdwzdsfloatToDigits_closure>:
| 10a19f20:       10 83 c0 48     vmulouh v4,v3,v24
| 10a19f24:       10 a2 0d bc     vaddeuqm v5,v2,v1,v22
| 10a19f28:       10 a1 9e 80     vsubuws v5,v1,v19
| 10a19f2c:       10 a1 9e b0     maddhd  r5,r1,r19,r26
| 10a19f30:       10 a1 9e d0     zvdotphssui r5,r1,r19
| 10a19f34:       10 a1 9f 10     .long 0x10a19f10
| 10a19f38:       00 00 00 00     .long 0x0
| 10a19f3c:       10 90 f7 d0     .long 0x1090f7d0
| 10a19f40:       10 a1 9c 18     vextdubvlx v5,v1,v19,r16
| 10a19f44:       10 a1 9c c0     vsubudm v5,v1,v19
| 10a19f48:       00 00 00 00     .long 0x0
| 10a19f4c:       10 90 f7 f0     maddhd  r4,r16,r30,r31
| 10a19f50:       10 a1 9c 08     vpmsumb v5,v1,v19
| 10a19f54:       10 a1 9f 00     vsubsbs v5,v1,v19
| 10a19f58:       10 a1 9f 3c     vaddeuqm v5,v1,v19,v28
| 10a19f5c:       00 00 00 00     .long 0x0
| 10a19f60:       10 90 f7 d0     .long 0x1090f7d0
| 10a19f64:       10 a1 9f 20     vmhaddshs v5,v1,v19,v28
| 10a19f68:       10 a1 9f 4c     psq_lux f5,r1,r19,1,6
| 10a19f6c:       00 00 00 00     .long 0x0
`----

Christian