[binutils-gdb] Hurd: Make gdb/reply_mig_hack.awk script compatible to "mawk"

[Thomas Schwinge <tschwinge at sourceware dot org>]

https://sourceware.org/git/gitweb.cgi?p=binutils-gdb.git;h=5eddd57823971bdb54f957d10c11ff3fc9f97b1e

commit 5eddd57823971bdb54f957d10c11ff3fc9f97b1e
Author: Thomas Schwinge <thomas@codesourcery.com>
Date:   Tue Jan 12 12:53:09 2016 +0100

    Hurd: Make gdb/reply_mig_hack.awk script compatible to "mawk"
    
    The "mawk" AWK implementation did't like that regular expression:
    
        mawk: [...]/gdb/reply_mig_hack.awk: line 98: regular expression compile failed (missing operand)
    
    	gdb/
    	* reply_mig_hack.awk: Rewrite one regular expression.

Diff:
---
 gdb/ChangeLog          | 4 ++++
 gdb/reply_mig_hack.awk | 2 +-
 2 files changed, 5 insertions(+), 1 deletion(-)

diff --git a/gdb/ChangeLog b/gdb/ChangeLog
index 099a9a9..73b001c 100644
--- a/gdb/ChangeLog
+++ b/gdb/ChangeLog
@@ -1,3 +1,7 @@
+2016-01-12  Thomas Schwinge  <thomas@codesourcery.com>
+
+	* reply_mig_hack.awk: Rewrite one regular expression.
+
 2016-01-11  Mike Frysinger  <vapier@gentoo.org>
 
 	* acinclude.m4: Include new warning.m4 file.
diff --git a/gdb/reply_mig_hack.awk b/gdb/reply_mig_hack.awk
index 1e2387a..e4c513b 100644
--- a/gdb/reply_mig_hack.awk
+++ b/gdb/reply_mig_hack.awk
@@ -95,7 +95,7 @@ parse_phase == 4 {
   print; next;
 }
 
-parse_phase == 5 && /^[ \t]*(auto |static |)const mach_msg_type_t/ {
+parse_phase == 5 && /^[ \t]*(auto |static )?const mach_msg_type_t/ {
   # The type check structure for an argument.
   arg_check_name[num_checks] = $(NF - 2);
   num_checks++;