Check for too large C objects. Also avoids GCC warnings (currently tr…

…iggered

with LTO).


git-svn-id: https://svn.r-project.org/R/trunk@87305 00db46b3-68df-0310-9c12-caf00c1e9a41

src/main/memory.c

@@ -3570,11 +3570,15 @@ void R_chk_free(void *ptr)
 
 void *R_chk_memcpy(void *dest, const void *src, size_t n)
 {
+    if (n >= PTRDIFF_MAX)
+	error(_("object is too large (%llu bytes)"), (unsigned long long)n);
     return n ? memcpy(dest, src, n) : dest;
 }
 
 void *R_chk_memset(void *s, int c, size_t n)
 {
+    if (n >= PTRDIFF_MAX)
+	error(_("object is too large (%llu bytes)"), (unsigned long long)n);
     return n ? memset(s, c, n) : s;
 }