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-rw-r--r--include/alloca.h13
1 files changed, 13 insertions, 0 deletions
diff --git a/include/alloca.h b/include/alloca.h
index 563d7868bd..7d243fd4ac 100644
--- a/include/alloca.h
+++ b/include/alloca.h
@@ -46,4 +46,17 @@ extern int __libc_alloca_cutoff (size_t size) __attribute__ ((const));
__alloca (((len) = (newlen)))
#endif
+#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__; })
+#else
+# define alloca_account(size, avar) \
+ ({ size_t s__ = (size); \
+ avar += size__; \
+ __alloca (size__); })
+#endif
+
#endif