Date: Fri, 14 Oct 2022 00:40:08 +0000 From: bugzilla-noreply@freebsd.org To: bugs@FreeBSD.org Subject: [Bug 267032] diff(1) -U and -C with very large number of context may produce incorrect line indicator Message-ID: <bug-267032-227@https.bugs.freebsd.org/bugzilla/>
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https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=3D267032 Bug ID: 267032 Summary: diff(1) -U and -C with very large number of context may produce incorrect line indicator Product: Base System Version: 13.0-RELEASE Hardware: Any OS: Any Status: New Severity: Affects Only Me Priority: --- Component: bin Assignee: bugs@FreeBSD.org Reporter: freebsd-bug-report-yf@yf.bsdclub.org diff(1) can accept number of context lines up to INT_MAX-1, however, it can cause signed integer overflow while calculating line number in line indicat= or. e.g. on FreeBSD/amd64, $ /usr/bin/diff -U2147483645 /usr/src/usr.bin/diff/diff.h /usr/src/usr.bin/diff/diff.c | /usr/bin/grep '^@@' @@ -1,117 +1,659 @@ @@ --2147483646,0 +-2147483647,0 @@ @@ --2147483634,0 +-2147483643,0 @@ @@ --2147483622,0 +-2147483635,0 @@ @@ --2147483619,0 +-2147483631,0 @@ @@ --2147483616,0 +-2147483627,0 @@ @@ --2147483613,0 +-2147483625,0 @@ @@ --2147483598,0 +-2147483615,0 @@ @@ --2147483596,0 +-2147483612,0 @@ @@ --2147483595,0 +-2147483597,0 @@ @@ --2147483588,0 +-2147483581,0 @@ @@ --2147483574,0 +-2147483535,0 @@ @@ --2147483573,0 +-2147483167,0 @@ @@ --2147483571,0 +-2147483165,0 @@ @@ --2147483562,0 +-2147483158,0 @@ @@ --2147483561,0 +-2147483142,0 @@ @@ --2147483559,0 +-2147483140,0 @@ @@ --2147483555,0 +-2147483135,0 @@ @@ --2147483550,0 +-2147483129,0 @@ @@ --2147483538,0 +-2147483124,0 @@ @@ --2147483534,0 +-2147482992,0 @@ I tried it on FreeBSD/amd64 13.0-RELEASE, with diff built from source broug= ht from commit 3736b2dd327050d2e6c925964b210eccbaac51ab in main branch. --=20 You are receiving this mail because: You are the assignee for the bug.=
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