1 files changed, 2 insertions, 1 deletions
diff --git a/ext/mwrap/mwrap.c b/ext/mwrap/mwrap.c
index 6109070..d08ebf0 100644
--- a/ext/mwrap/mwrap.c
+++ b/ext/mwrap/mwrap.c
@@ -291,6 +291,7 @@ static struct src_loc *update_stats_rcu(size_t size, uintptr_t caller)
                  const char *ptr = rb_source_location_cstr(&line);
                  size_t len;
                  size_t int_size = INT2STR_MAX;
+                static char buf[PATH_MAX + INT2STR_MAX + sizeof(*k) + 2];
  
                  generation = rb_gc_count();
  
@@ -298,7 +299,7 @@ static struct src_loc *update_stats_rcu(size_t size, uintptr_t caller)
  
                  /* avoid vsnprintf or anything which could call malloc here: */
                  len = strlen(ptr);
-                k = alloca(sizeof(*k) + len + 1 + int_size + 1);
+                k = (void *)buf;
                  k->total = size;
                  dst = mempcpy(k->k, ptr, len);
                  *dst++ = ':';