doc: install: document bootstrap-ubsan

gcc/ChangeLog:
	PR other/116948

	* doc/install.texi (Building a native compiler): Mention bootstrap-ubsan.

diff --git a/gcc/doc/install.texi b/gcc/doc/install.texi
index b562b0f38d6c39d00f971cec5a0363fd279998c5..d1fc7220db9dc5eacba083af71b1823505ca1aff 100644 (file)
--- a/gcc/doc/install.texi
+++ b/gcc/doc/install.texi
@@ -3147,6 +3147,10 @@ Compiles GCC itself using HWAddress Sanitization in order to catch invalid
 memory accesses within the GCC code.  This option is only available on AArch64
 systems that are running Linux kernel version 5.4 or later.
 
+@item @samp{bootstrap-ubsan}
+Compiles GCC itself using Undefined Behavior Sanitization in order to catch
+undefined behavior within the GCC code.
+
 @end table
 
 @section Building a cross compiler