X-Git-Url: http://review.tizen.org/git/?a=blobdiff_plain;f=include%2Falloca.h;h=f741d25d5479fde3b8db0e232c0bd20c7291882f;hb=0f1753c9c476b500f52755d1cc07c1eb6927e49a;hp=b99c3d152b63347a6ff1a9f29b7a6136b4b552c2;hpb=a85b5cb4d4a5fc56e2b38638d270bf2daa67eb6c;p=platform%2Fupstream%2Fglibc.git

diff --git a/include/alloca.h b/include/alloca.h
index b99c3d1..f741d25 100644
--- a/include/alloca.h
+++ b/include/alloca.h
@@ -20,9 +20,13 @@ libc_hidden_proto (__libc_alloca_cutoff)
 
 #include <allocalim.h>
 
+#ifndef stackinfo_alloca_round
+# define stackinfo_alloca_round(l) (((l) + 15) & -16)
+#endif
+
 #if _STACK_GROWS_DOWN
 # define extend_alloca(buf, len, newlen) \
-  (__typeof (buf)) ({ size_t __newlen = (newlen);			      \
+  (__typeof (buf)) ({ size_t __newlen = stackinfo_alloca_round (newlen);      \
 		      char *__newbuf = __alloca (__newlen);		      \
 		      if (__newbuf + __newlen == (char *) buf)		      \
 			len += __newlen;				      \
@@ -31,10 +35,10 @@ libc_hidden_proto (__libc_alloca_cutoff)
 		      __newbuf; })
 #elif _STACK_GROWS_UP
 # define extend_alloca(buf, len, newlen) \
-  (__typeof (buf)) ({ size_t __newlen = (newlen);			      \
+  (__typeof (buf)) ({ size_t __newlen = stackinfo_alloca_round (newlen);      \
 		      char *__newbuf = __alloca (__newlen);		      \
 		      char *__buf = (buf);				      \
-		      if (__buf + __newlen == __newbuf)			      \
+		      if (__buf + len == __newbuf)			      \
 			{						      \
 			  len += __newlen;				      \
 			  __newbuf = __buf;				      \
@@ -49,15 +53,24 @@ libc_hidden_proto (__libc_alloca_cutoff)
 
 #if defined stackinfo_get_sp && defined stackinfo_sub_sp
 # define alloca_account(size, avar) \
-  ({ void *old__ = stackinfo_get_sp ();			\
-     void *m__ = __alloca (size);			\
-     avar += stackinfo_sub_sp (old__);			\
+  ({ void *old__ = stackinfo_get_sp ();					      \
+     void *m__ = __alloca (size);					      \
+     avar += stackinfo_sub_sp (old__);					      \
+     m__; })
+# define extend_alloca_account(buf, len, newlen, avar) \
+  ({ void *old__ = stackinfo_get_sp ();					      \
+     void *m__ = extend_alloca (buf, len, newlen);			      \
+     avar += stackinfo_sub_sp (old__);					      \
      m__; })
 #else
 # define alloca_account(size, avar) \
-  ({ size_t s__ = (size);		    \
-     avar += s__;			    \
+  ({ size_t s__ = (size);						      \
+     avar += s__;							      \
      __alloca (s__); })
+# define extend_alloca_account(buf, len, newlen, avar) \
+  ({ size_t s__ = (newlen);						      \
+     avar += s__;							      \
+     extend_alloca (buf, len, s__); })
 #endif
 
 #endif