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-rw-r--r--Build/source/texk/web2c/cwebdir/ChangeLog4
-rw-r--r--Build/source/texk/web2c/cwebdir/cweave.w2
2 files changed, 5 insertions, 1 deletions
diff --git a/Build/source/texk/web2c/cwebdir/ChangeLog b/Build/source/texk/web2c/cwebdir/ChangeLog
index 6a278c0ae5c..3d07a58b253 100644
--- a/Build/source/texk/web2c/cwebdir/ChangeLog
+++ b/Build/source/texk/web2c/cwebdir/ChangeLog
@@ -1,5 +1,9 @@
2021-02-17 Andreas Scherer <https://ascherer.github.io>
+ * cweave.w: Fix 'Illegal hardware instruction on MacOS.
+
+2021-02-17 Andreas Scherer <https://ascherer.github.io>
+
* Makefile: Main CWEB modules depend on COMMON inteface.
2021-02-16 Andreas Scherer <https://ascherer.github.io>
diff --git a/Build/source/texk/web2c/cwebdir/cweave.w b/Build/source/texk/web2c/cwebdir/cweave.w
index 5cc62b1721a..c2284deb38a 100644
--- a/Build/source/texk/web2c/cwebdir/cweave.w
+++ b/Build/source/texk/web2c/cwebdir/cweave.w
@@ -1333,7 +1333,7 @@ boolean per_cent,boolean carryover@t\2\2@>)
if (*j--=='%' && (j==out_buf || *j!='\\')) {
*b--='%'; break;
}
- if (b<out_ptr) strncpy(out_buf+1,b+1,(size_t)(out_ptr-b));
+ if (b<out_ptr) memcpy(out_buf+1,b+1,(size_t)(out_ptr-b));
out_ptr-=b-out_buf;
}