[LEDE-DEV] [PATCH] gcc: 7.2: remove mips patch causing broken code

Kevin Darbyshire-Bryant kevin at darbyshire-bryant.me.uk
Mon Dec 18 06:07:56 PST 2017



> On 18 Dec 2017, at 10:12, Felix Fietkau <nbd at nbd.name> wrote:
> 
> On 2017-12-18 11:07, Kevin Darbyshire-Bryant wrote:
>> Hi Felix,
>> 
>> Thanks for explaining that.  I suspect you’re right that there’s an underlying bug in gcc mips.  So ideally we need some code that exposes the bug when using -O2 (or even just -funroll_loops) Looking at FS 814 there’s a hint in there that uhttpd was similarly affected…and not solved by the patch drop.  So what to do if there’s a bug just lurking to bite us?
> 
> If possible, reproduce it on uhttpd with an unmodified upstream version
> of GCC and open up a bug report.
> 
> - Felix

Sadly I’m unable to reproduce the uhttpd issue - frustrating.

Cheers,

Kevin D-B

GPG fingerprint: 012C ACB2 28C6 C53E 9775  9123 B3A2 389B 9DE2 334A
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