Tcl 8.6.1 was released more than half a decade ago, so not much of a point still documenting this Tcl 8.6 GA regression.
Committed. Perhaps I'll backport to the GCC 9 branch as well. Gerald 2019-08-04 Gerald Pfeifer <ger...@pfeifer.com> * doc/install.texi (Prerequisites): Remove reference to Tcl 8.6 bug that was fixed in Tcl 8.6.1. Index: gcc/doc/install.texi =================================================================== --- gcc/doc/install.texi (revision 274087) +++ gcc/doc/install.texi (working copy) @@ -442,10 +442,7 @@ Necessary when modifying @command{gperf} input fil @itemx Tcl Necessary to run the GCC testsuite; see the section on testing for -details. Tcl 8.6 has a known regression in RE pattern handling that -make parts of the testsuite fail. See -@uref{http://core.tcl.tk/tcl/tktview/267b7e2334ee2e9de34c4b00d6e72e2f1997085f} -for more information. This bug has been fixed in 8.6.1. +details. @item autogen version 5.5.4 (or later) and @itemx guile version 1.4.1 (or later)