From: Jan Kratochvil <jan.kratochvil@redhat.com>
Date: Thu, 5 Dec 2013 15:16:14 +0000 (+0100)
Subject: Fix test FAIL with -O2
X-Git-Tag: elfutils-0.158~47
X-Git-Url: http://git.ipfire.org/?a=commitdiff_plain;h=f88863fbb3a7380ad8c7ebcdf6dceb023f3ccf75;p=thirdparty%2Felfutils.git

Fix test FAIL with -O2

Signed-off-by: Jan Kratochvil <jan.kratochvil@redhat.com>
---

diff --git a/tests/ChangeLog b/tests/ChangeLog
index 899256825..9e4cd9afc 100644
--- a/tests/ChangeLog
+++ b/tests/ChangeLog
@@ -1,3 +1,8 @@
+2013-12-05  Jan Kratochvil  <jan.kratochvil@redhat.com>
+
+	Fix test FAIL with -O2.
+	* backtrace-child.c (sigusr2): Add NOINLINE_NOCLONE and final asm stub.
+
 2013-12-05  Mark Wielaard  <mjw@redhat.com>
 
 	* backtrace-data.c (main): If unsupported also print to stderr.
diff --git a/tests/backtrace-child.c b/tests/backtrace-child.c
index 2bc0eded2..0db125899 100644
--- a/tests/backtrace-child.c
+++ b/tests/backtrace-child.c
@@ -93,7 +93,7 @@ static int ptraceme, gencore;
 
 /* Execution will arrive here from jmp by an artificial ptrace-spawn signal.  */
 
-static void
+static NOINLINE_NOCLONE void
 sigusr2 (int signo)
 {
   assert (signo == SIGUSR2);
@@ -105,6 +105,8 @@ sigusr2 (int signo)
     }
   /* Here we dump the core for --gencore.  */
   raise (SIGABRT);
+  /* Avoid tail call optimization for the raise call.  */
+  asm volatile ("");
 }
 
 static NOINLINE_NOCLONE void