[binutils-gdb] Fix compilation error with clang in gdb/testsuite/gdb.base/jit-main.c

[binutils-gdb] Fix compilation error with clang in gdb/testsuite/gdb.base/jit-main.c

[Gary Benson]

https://sourceware.org/git/gitweb.cgi?p=binutils-gdb.git;h=e0c45f305525bbc3fd95024e4517a52d1c371868

commit e0c45f305525bbc3fd95024e4517a52d1c371868
Author: Gary Benson <gbenson@redhat.com>
Date:   Mon Apr 20 15:05:01 2020 +0100

    Fix compilation error with clang in gdb/testsuite/gdb.base/jit-main.c
    
    Clang fails to compile the above file, with the following error:
      warning: while loop has empty body [-Wempty-body]
    
    This prevents the following testcases from executing:
      gdb.base/jit.exp
      gdb.base/jit-so.exp

Diff:
---
 gdb/testsuite/ChangeLog           | 4 ++++
 gdb/testsuite/gdb.base/jit-main.c | 2 +-
 2 files changed, 5 insertions(+), 1 deletion(-)

diff --git a/gdb/testsuite/ChangeLog b/gdb/testsuite/ChangeLog
index b24efc772b2..03771144256 100644
--- a/gdb/testsuite/ChangeLog
+++ b/gdb/testsuite/ChangeLog
@@ -1,3 +1,7 @@
+2020-04-20  Gary Benson <gbenson@redhat.com>
+
+	* gdb.base/jit-main.c: Fix compilation error with clang.
+
 2020-04-17  Kamil Rytarowski  <n54@gmx.com>
 
 	* gdb.base/attach-twice.c: Include "sys/types.h".
diff --git a/gdb/testsuite/gdb.base/jit-main.c b/gdb/testsuite/gdb.base/jit-main.c
index 40958ef5b54..37c2a31b3f2 100644
--- a/gdb/testsuite/gdb.base/jit-main.c
+++ b/gdb/testsuite/gdb.base/jit-main.c
@@ -128,7 +128,7 @@ update_locations (const void *const addr, int idx)
 
 /* Used to spin waiting for GDB.  */
 volatile int wait_for_gdb = ATTACH;
-#define WAIT_FOR_GDB while (wait_for_gdb)
+#define WAIT_FOR_GDB do {} while (wait_for_gdb)
 
 /* The current process's PID.  GDB retrieves this.  */
 int mypid;