[binutils-gdb] Fix early return in foreach_with_prefix

[Pedro Alves <palves@sourceware.org>]

https://sourceware.org/git/gitweb.cgi?p=binutils-gdb.git;h=a26c8de0ee938a48bc6f6232cdfac1a5eabaa778

commit a26c8de0ee938a48bc6f6232cdfac1a5eabaa778
Author: Pedro Alves <palves@redhat.com>
Date:   Wed Jul 3 18:05:20 2019 +0100

    Fix early return in foreach_with_prefix
    
    I noticed that an early return in a foreach_with_prefix block does not
    cause the outer scope to return, like:
    
      foreach_with_prefix var {"foo" "bar"} {
         return
      }
      # Control continues here, but it should not.
    
    The problem is that we're missing the usual "return -code" treatment.
    This commit fixes it.
    
    gdb/testsuite/ChangeLog:
    2019-07-03  Pedro Alves  <palves@redhat.com>
    
    	* lib/gdb.exp (foreach_with_prefix): Use "catch" and
    	"return -code".

Diff:
---
 gdb/testsuite/ChangeLog   | 5 +++++
 gdb/testsuite/lib/gdb.exp | 9 ++++++++-
 2 files changed, 13 insertions(+), 1 deletion(-)

diff --git a/gdb/testsuite/ChangeLog b/gdb/testsuite/ChangeLog
index 38dcfd3..90b5f8f 100644
--- a/gdb/testsuite/ChangeLog
+++ b/gdb/testsuite/ChangeLog
@@ -1,5 +1,10 @@
 2019-07-03  Pedro Alves  <palves@redhat.com>
 
+	* lib/gdb.exp (foreach_with_prefix): Use "catch" and
+	"return -code".
+
+2019-07-03  Pedro Alves  <palves@redhat.com>
+
 	PR cli/24732
 	* gdb.base/shell.exp: Load completion-support.exp.
 	Adjust expected error output.  Add completion tests.
diff --git a/gdb/testsuite/lib/gdb.exp b/gdb/testsuite/lib/gdb.exp
index da36ec0..41f0ef5 100644
--- a/gdb/testsuite/lib/gdb.exp
+++ b/gdb/testsuite/lib/gdb.exp
@@ -2025,7 +2025,14 @@ proc foreach_with_prefix {var list body} {
     upvar 1 $var myvar
     foreach myvar $list {
 	with_test_prefix "$var=$myvar" {
-	    uplevel 1 $body
+	    set code [catch {uplevel 1 $body} result]
+	}
+
+	if {$code == 1} {
+	    global errorInfo errorCode
+	    return -code $code -errorinfo $errorInfo -errorcode $errorCode $result
+	} else {
+	    return -code $code $result
 	}
     }
 }