[binutils-gdb] Match rustc beta versions

[Tom Tromey <tromey@sourceware.org>]

https://sourceware.org/git/gitweb.cgi?p=binutils-gdb.git;h=7410508723bf20c29ea8d5888eee9c45e5fae0a2

commit 7410508723bf20c29ea8d5888eee9c45e5fae0a2
Author: Tom Tromey <tom@tromey.com>
Date:   Fri Mar 25 13:36:32 2022 -0600

    Match rustc beta versions
    
    The rust_compiler_version proc extracts the Rust compiler version from
    the "rustc --version" output.  For a beta compiler, the output looks
    like:
    
        rustc 1.60.0-beta.6 (7bccde197 2022-03-22)
    
    This patch slightly relaxes the regexp -- removing a space -- so that
    this can be understood by this proc.

Diff:
---
 gdb/testsuite/lib/rust-support.exp | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/gdb/testsuite/lib/rust-support.exp b/gdb/testsuite/lib/rust-support.exp
index 0d39566df73..85e5b021e21 100644
--- a/gdb/testsuite/lib/rust-support.exp
+++ b/gdb/testsuite/lib/rust-support.exp
@@ -104,7 +104,7 @@ gdb_caching_proc rust_compiler_version {
     } else {
 	set output [lindex [remote_exec host "$rustc --version --verbose"] 1]
 	foreach line [split $output \n] {
-	    if {[regexp "rustc (\[0-9.\]+) .*\$" $output ignore version]} {
+	    if {[regexp "rustc (\[0-9.\]+).*\$" $output ignore version]} {
 		return $version
 	    }
 	}