nixpkgs/pkgs/development/libraries/glibc/fix-out-of-bounds-access-in-findidxwc.patch

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diff -ur glibc-2.27/locale/weightwc.h glibc-2.27-patched/locale/weightwc.h
--- glibc-2.27/locale/weightwc.h 2018-02-02 01:17:18.000000000 +0900
+++ glibc-2.27-patched/locale/weightwc.h 2020-01-12 04:54:16.044440602 +0900
@@ -94,19 +94,19 @@
if (cp[cnt] != usrc[cnt])
break;
- if (cnt < nhere - 1)
+ if (cnt < nhere - 1 || cnt == len)
{
cp += 2 * nhere;
continue;
}
- if (cp[nhere - 1] > usrc[nhere -1])
+ if (cp[nhere - 1] > usrc[nhere - 1])
{
cp += 2 * nhere;
continue;
}
- if (cp[2 * nhere - 1] < usrc[nhere -1])
+ if (cp[2 * nhere - 1] < usrc[nhere - 1])
{
cp += 2 * nhere;
continue;