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Bug 925318

Summary: dev-python/cython-3.0.8 fails to compile on MUSL+LTO
Product: Gentoo Linux Reporter: Agostino Sarubbo <ago>
Component: Current packagesAssignee: Python Gentoo Team <python>
Status: CONFIRMED ---    
Severity: normal CC: sam
Priority: Normal    
Version: unspecified   
Hardware: All   
OS: Linux   
Whiteboard:
Package list:
Runtime testing required: ---
Attachments: build log
stacktrace

Description Agostino Sarubbo gentoo-dev 2024-02-23 10:26:27 UTC
Created attachment 885803 [details]
build log

I'm setting up a new environment with speed in mind. I'm using musl + lto and I have disabled all (security) flags that add slowness (see CFLAGS from emerge --info)

cython fails without a particular reason, attached build log and emerge --info
Comment 1 Agostino Sarubbo gentoo-dev 2024-02-23 10:37:46 UTC
dmesg reports:

[Fri Feb 23 09:51:31 2024] python3.10[23773]: segfault at 7f2adce8dfd0 ip 00007f2ade263526 sp 00007f2adce8dfc0 error 6 in libpython3.10.so.1.0[7f2ade25d000+1d8000] likely on CPU 2 (core 0, socket 0)
[Fri Feb 23 09:51:31 2024] Code: ec 38 01 00 00 48 85 ff 0f 84 be 75 00 00 8b 47 20 48 89 f5 48 8b 77 10 49 89 fc 48 c7 44 24 78 00 00 00 00 41 89 d5 83 c0 01 <48> 89 74 24 10 89 47 20 3b 46 40 0f 8f 21 06 00 00 49 8b 54 24 30
Comment 2 Agostino Sarubbo gentoo-dev 2024-02-27 19:42:10 UTC
Created attachment 886134 [details]
stacktrace

I can get it working by compiling python with LDFLAGS="${LDFLAGS} -Wl,-z,stack-size=2097152" as suggested by sam.