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authorWill Newton <will.newton@linaro.org>2014-03-17 10:16:53 +0000
committerWill Newton <will.newton@linaro.org>2014-03-17 16:05:22 +0000
commit788bba368c2eaf8aa3fd2ca18d269395d6bc8afb (patch)
treeee5e373caa7cd2ea57f61e00ea3f9907fc2f3ece /nptl
parentae42bbc55a9e05976269026ddabcfb917f6e922f (diff)
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Fix __PTHREAD_MUTEX_HAVE_ELISION -Wundef warning
ChangeLog:

2014-03-17  Will Newton  <will.newton@linaro.org>

	* nptl/sysdeps/pthread/pthread.h: Check
	__PTHREAD_MUTEX_HAVE_ELISION is defined before testing
	its value.
Diffstat (limited to 'nptl')
-rw-r--r--nptl/sysdeps/pthread/pthread.h14
1 files changed, 9 insertions, 5 deletions
diff --git a/nptl/sysdeps/pthread/pthread.h b/nptl/sysdeps/pthread/pthread.h
index 1e0c5dc937..142da639e4 100644
--- a/nptl/sysdeps/pthread/pthread.h
+++ b/nptl/sysdeps/pthread/pthread.h
@@ -83,12 +83,16 @@ enum
 
 
 /* Mutex initializers.  */
-#if __PTHREAD_MUTEX_HAVE_ELISION == 1 /* 64bit layout.  */
-#define __PTHREAD_SPINS 0, 0
-#elif __PTHREAD_MUTEX_HAVE_ELISION == 2 /* 32bit layout.  */
-#define __PTHREAD_SPINS { 0, 0 }
+#ifdef __PTHREAD_MUTEX_HAVE_ELISION
+# if __PTHREAD_MUTEX_HAVE_ELISION == 1 /* 64bit layout.  */
+#  define __PTHREAD_SPINS 0, 0
+# elif __PTHREAD_MUTEX_HAVE_ELISION == 2 /* 32bit layout.  */
+#  define __PTHREAD_SPINS { 0, 0 }
+# else
+#  error "Unknown value of __PTHREAD_MUTEX_HAVE_ELISION"
+# endif
 #else
-#define __PTHREAD_SPINS 0
+# define __PTHREAD_SPINS 0
 #endif
 
 #ifdef __PTHREAD_MUTEX_HAVE_PREV