Fix latent bug in test_gdb_complete_cmd_multiple

A following patch will add the following to a testcase:

  test_gdb_completion_offers_commands "| "

And that tripped on a latent testsuite bug:

 (gdb) | PASS: gdb.base/shell.exp: tab complete "| "
 ^CQuit
 (gdb) complete |
 | !
 | +
 PASS: gdb.base/shell.exp: cmd complete "| "
 |  *** List may be truncated, max-completions reached. ***
 (gdb) FAIL: gdb.base/shell.exp: set max-completions 200
 set max-completions 200

The issue is that "|" ends up as part of a regexp, and "|" in regexps
has a special meaning...

Fix this with string_to_regexp.

gdb/testsuite/ChangeLog:
2019-07-03  Pedro Alves  <palves@redhat.com>

	* lib/completion-support.exp (test_gdb_complete_cmd_multiple): Use
	string_to_regexp.

diff --git a/gdb/testsuite/ChangeLog b/gdb/testsuite/ChangeLog
index 8a426ff..601348f 100644 (file)
--- a/gdb/testsuite/ChangeLog
+++ b/gdb/testsuite/ChangeLog
@@ -1,5 +1,10 @@
 2019-07-03  Pedro Alves  <palves@redhat.com>
 
+       * lib/completion-support.exp (test_gdb_complete_cmd_multiple): Use
+       string_to_regexp.
+
+2019-07-03  Pedro Alves  <palves@redhat.com>
+
        * gdb.base/options.exp (expect_none, expect_flag, expect_bool)
        (expect_integer): Adjust to expect "-string".
        (expect_string): New.

diff --git a/gdb/testsuite/lib/completion-support.exp b/gdb/testsuite/lib/completion-support.exp
index 3199e85..abe48b4 100644 (file)
--- a/gdb/testsuite/lib/completion-support.exp
+++ b/gdb/testsuite/lib/completion-support.exp
@@ -200,8 +200,9 @@ proc test_gdb_complete_cmd_multiple { cmd_prefix completion_word completion_list
     set expected_re [make_cmd_completion_list_re $cmd_prefix $completion_list $start_quote_char $end_quote_char]
 
     if {$max_completions} {
+       set cmd_prefix_re [string_to_regexp $cmd_prefix]
        append expected_re \
-           "$cmd_prefix \\*\\*\\* List may be truncated, max-completions reached\\. \\*\\*\\*.*\r\n"
+           "$cmd_prefix_re \\*\\*\\* List may be truncated, max-completions reached\\. \\*\\*\\*.*\r\n"
     }
 
     set cmd_re [string_to_regexp "complete $cmd_prefix$completion_word"]