commit e1828db8e75a56eebf8ede53e1ae4fcbd0f3376f
author Richard Biener <rguenther@suse.de> Fri Jul 18 09:02:09 2025 +0200
committer Richard Biener <rguenther@suse.de> Fri Jul 18 11:46:15 2025 +0200
tree 8027ae66cde8412a3cab7dbc7fefec236d549da2
parent a8512a65874d9de778c6b1bb8a101d254dce6472

tree-optimization/120924 - up --param uninit-max-chain-len

The PR shows that the uninit analysis limits are set too low in
cases we lower switches to ifs as happens on s390x for a linux
kernel TU.  This causes false positive uninit diagnostics as we
abort the attempt to prove that a value is initialized on all
paths.  The new testcase only would require upping to 9.

	PR tree-optimization/120924
	* params.opt (uninit-max-chain-len): Up from 8 to 12.

	* gcc.dg/uninit-pr120924.c: New testcase.

(cherry picked from commit cf9a479e3f909d5217e954788eb3c5b569e4bc52)