+#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__); \
+ 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__; \
+ __alloca (s__); })
+# define extend_alloca_account(buf, len, newlen, avar) \
+ ({ size_t s__ = (newlen); \
+ avar += s__; \
+ extend_alloca (buf, len, s__); })
+#endif
+