From 4e1d704243a4f3c4ded47cd0d02427bb7efef069 Mon Sep 17 00:00:00 2001 From: =?UTF-8?q?Torbj=C3=B6rn=20SVENSSON?= Date: Tue, 25 Oct 2022 11:45:40 +0200 Subject: IRA: Make sure array is big enough MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit In commit 081c96621da, the call to resize_reg_info() was moved before the call to remove_scratches() and the latter one can increase the number of regs and that would cause an out of bounds usage on the reg_renumber global array. Without this patch, the following testcase randomly fails with: during RTL pass: ira In file included from /src/gcc/testsuite/gcc.dg/compat/struct-by-value-5b_y.c:13: /src/gcc/testsuite/gcc.dg/compat/struct-by-value-5b_y.c: In function 'checkgSf13': /src/gcc/testsuite/gcc.dg/compat/fp-struct-test-by-value-y.h:28:1: internal compiler error: Segmentation fault /src/gcc/testsuite/gcc.dg/compat/struct-by-value-5b_y.c:22:1: note: in expansion of macro 'TEST' gcc/ChangeLog: * ira.cc: Resize array after reg number increased. Co-Authored-By: Yvan ROUX Signed-off-by: Torbjörn SVENSSON --- gcc/ira.cc | 1 + 1 file changed, 1 insertion(+) (limited to 'gcc') diff --git a/gcc/ira.cc b/gcc/ira.cc index 42c9cea..d28a67b 100644 --- a/gcc/ira.cc +++ b/gcc/ira.cc @@ -5718,6 +5718,7 @@ ira (FILE *f) regstat_free_ri (); regstat_init_n_sets_and_refs (); regstat_compute_ri (); + resize_reg_info (); }; int max_regno_before_rm = max_reg_num (); -- cgit v1.1