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GCC 5 and -Wstrict-aliasing in JSON.h
2018 Aug 14
3
GCC 5 and -Wstrict-aliasing in JSON.h
...ssed in is a union, why not simply take the union member of the appropriate type? I don't think that GCC would produce this warning unnecessarily. You are in dangerous waters. -- Andrew Haley Java Platform Lead Engineer Red Hat UK Ltd. <https://www.redhat.com> EAC8 43EB D3EF DB98 CC77 2FAD A5CD 6035 332F A671
uplink call quality issues
2006 Jan 15
6
uplink call quality issues
...o the CPU load in the asterisk server has been graphed and does not exceed the normal CPU load levels Any assistance will be very much appreciated PolAus _________________________________________________________________ Buy now @ Tradingpost.com.au http://a.ninemsn.com.au/b.aspx?URL=http%3A%2F%2Fad%2Eau%2Edoubleclick%2Enet%2Fclk%3B24875379%3B12369854%3Ba%3Fhttp%3A%2F%2Fwww%2Etradingpost%2Ecom%2Eau%3Freferrer%3DnmsnHMetagv1&_t=752643439&_r=hotmailtagline&_m=EXT
GCC 5 and -Wstrict-aliasing in JSON.h
2018 Aug 10
4
GCC 5 and -Wstrict-aliasing in JSON.h
在 2018-08-10 06:20, Kim Gräsman 写道: > On Fri, Aug 10, 2018 at 12:02 AM, Jonathan Wakely <jwakely.gcc at gmail.com> > wrote: >> >> If GCC 4.9.3 thinks there's an aliasing violation it might >> misoptimise. It doesn't matter if it's right or not, it matters if it >> treats the code as undefined or not. >> >> And apparently GCC does think
GCC 5 and -Wstrict-aliasing in JSON.h
2018 Aug 10
2
GCC 5 and -Wstrict-aliasing in JSON.h
...nless the object > stored in the memory at that address was stored as the union type. > > Do not lie to the compiler or it will get its revenge. > > -- > Andrew Haley > Java Platform Lead Engineer > Red Hat UK Ltd. <https://www.redhat.com> > EAC8 43EB D3EF DB98 CC77 2FAD A5CD 6035 332F A671 > -------------- next part -------------- An HTML attachment was scrubbed... URL: <http://lists.llvm.org/pipermail/llvm-dev/attachments/20180810/ba826ae9/attachment.html>
GCC 5 and -Wstrict-aliasing in JSON.h
2018 Aug 12
4
GCC 5 and -Wstrict-aliasing in JSON.h
I did some more extensive testing and found that all GCCs older than 7 trigger the warning, but only if CMAKE_BUILD_TYPE=Release (which I guess indicates optimizations are enabled). There's a patch up for disabling the warning here: https://reviews.llvm.org/D50607. I still feel a little uncomfortable, because I think Jonathan makes an excellent point -- if GCC thinks there's a
mounting a snapshot for backup.
2009 Jul 01
1
mounting a snapshot for backup.
Hi I have an ocfs2 volume (1.4.1) on lvm2, which is made available on 2 nodes via dual primary drbd that is on it. I wanted to backup my volume, so naturally I made a snapshot of it via the lvm2, and tried to mount it for backing up. However, I got the following error in dmesg : [319981.478168] (23483,0):ocfs2_fill_super:700 ERROR: Unable to create per-mount debugfs root. I then searched
[locking/paravirt] static_key_disable_cpuslocked(): static key 'virt_spin_lock_key+0x0/0x20' used before call to jump_label_init()
2017 Oct 30
3
[locking/paravirt] static_key_disable_cpuslocked(): static key 'virt_spin_lock_key+0x0/0x20' used before call to jump_label_init()
...8086:2faa [ 34.207961] EDAC sbridge: Seeking for: PCI ID 8086:2fab [ 34.207965] EDAC sbridge: Seeking for: PCI ID 8086:2fab [ 34.207970] EDAC sbridge: Seeking for: PCI ID 8086:2fab [ 34.207973] EDAC sbridge: Seeking for: PCI ID 8086:2fac [ 34.207980] EDAC sbridge: Seeking for: PCI ID 8086:2fad [ 34.207988] EDAC sbridge: Seeking for: PCI ID 8086:2f68 [ 34.207991] EDAC sbridge: Seeking for: PCI ID 8086:2f68 [ 34.207996] EDAC sbridge: Seeking for: PCI ID 8086:2f68 [ 34.207998] EDAC sbridge: Seeking for: PCI ID 8086:2f79 [ 34.208015] EDAC sbridge: Seeking for: PCI ID 8086:2f79 [...
[locking/paravirt] static_key_disable_cpuslocked(): static key 'virt_spin_lock_key+0x0/0x20' used before call to jump_label_init()
2017 Oct 30
3
[locking/paravirt] static_key_disable_cpuslocked(): static key 'virt_spin_lock_key+0x0/0x20' used before call to jump_label_init()
...8086:2faa [ 34.207961] EDAC sbridge: Seeking for: PCI ID 8086:2fab [ 34.207965] EDAC sbridge: Seeking for: PCI ID 8086:2fab [ 34.207970] EDAC sbridge: Seeking for: PCI ID 8086:2fab [ 34.207973] EDAC sbridge: Seeking for: PCI ID 8086:2fac [ 34.207980] EDAC sbridge: Seeking for: PCI ID 8086:2fad [ 34.207988] EDAC sbridge: Seeking for: PCI ID 8086:2f68 [ 34.207991] EDAC sbridge: Seeking for: PCI ID 8086:2f68 [ 34.207996] EDAC sbridge: Seeking for: PCI ID 8086:2f68 [ 34.207998] EDAC sbridge: Seeking for: PCI ID 8086:2f79 [ 34.208015] EDAC sbridge: Seeking for: PCI ID 8086:2f79 [...