Date: Wed, 01 May 2019 21:17:59 +0000 From: bugzilla-noreply@freebsd.org To: bugs@FreeBSD.org Subject: [Bug 237699] Hex printing with subr_prf cuts off zero-padded MSB Message-ID: <bug-237699-227@https.bugs.freebsd.org/bugzilla/>
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https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=237699 Bug ID: 237699 Summary: Hex printing with subr_prf cuts off zero-padded MSB Product: Base System Version: CURRENT Hardware: Any OS: Any Status: New Severity: Affects Many People Priority: --- Component: kern Assignee: bugs@FreeBSD.org Reporter: contact@knnspeed.com Hi, Using a a print function that uses subr_prf.c with an argument of %#016qx has the first two padding 0s cut off. This only impacts zeros added by padding, as data does not get cut. It appears to be an issue in kvprintf in the section with the "number:" label. I'm trying to print an AVX register, using %#016qx%qx%qx%qx, but I think this would show up on any architecture on... a very large number of BSD versions? I believe it has something to do with this part of the kvprintf "number:" section--I think 2 characters are being erroneously subtracted, but I haven't had an opportunity to really read through kvprintf and figure out how to fix this without accidentally harming anything else: if (!ladjust && padc == '0') dwidth = width - tmp; I also noticed that FreeBSD uses subr_prf.c V8.3, though I know I've seen a V8.4 floating around... -- You are receiving this mail because: You are the assignee for the bug.help
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