From: Martin Liska <mliska@suse.cz>
Date: Tue, 15 Dec 2020 08:59:04 +0000 (+0100)
Subject: lto: set nthreads_var to 1 if it is zero
X-Git-Tag: basepoints/gcc-12~2217
X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=cab1b0ebc00ea53040afcbe4b91e653a87915092;p=thirdparty%2Fgcc.git

lto: set nthreads_var to 1 if it is zero

gcc/ChangeLog:

	PR lto/98275
	* lto-wrapper.c: Do not use -j0 when we are unable to detect
	number of cores.
---

diff --git a/gcc/lto-wrapper.c b/gcc/lto-wrapper.c
index 68ccb1565219..da1305c16965 100644
--- a/gcc/lto-wrapper.c
+++ b/gcc/lto-wrapper.c
@@ -1780,6 +1780,8 @@ cont1:
 	{
 	  char buf[256];
 	  init_num_threads ();
+	  if (nthreads_var == 0)
+	    nthreads_var = 1;
 	  if (verbose)
 	    fprintf (stderr, "LTO parallelism level set to %ld\n",
 		     nthreads_var);