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-rw-r--r--include/libc-internal.h4
1 files changed, 2 insertions, 2 deletions
diff --git a/include/libc-internal.h b/include/libc-internal.h
index 2f4f7fae3..7b2566f74 100644
--- a/include/libc-internal.h
+++ b/include/libc-internal.h
@@ -67,7 +67,7 @@ extern const char *__uclibc_progname attribute_hidden;
/* #include <alloca.h> */
#include <bits/stackinfo.h>
-#if _STACK_GROWS_DOWN
+#if defined(_STACK_GROWS_DOWN)
# define extend_alloca(buf, len, newlen) \
(__typeof (buf)) ({ size_t __newlen = (newlen); \
char *__newbuf = alloca (__newlen); \
@@ -76,7 +76,7 @@ extern const char *__uclibc_progname attribute_hidden;
else \
len = __newlen; \
__newbuf; })
-#elif _STACK_GROWS_UP
+#elif defined(_STACK_GROWS_UP)
# define extend_alloca(buf, len, newlen) \
(__typeof (buf)) ({ size_t __newlen = (newlen); \
char *__newbuf = alloca (__newlen); \