Change cop_warnings from an SV holding the warnings bitmask to a

[perl5.git] / util.c

diff --git a/util.c b/util.c
index b4ed7f2..abd0db9 100644 (file)
--- a/util.c
+++ b/util.c
@@ -1531,7 +1531,18 @@ Perl_ckwarn_d(pTHX_ U32 w)
        ;
 }
 
-
+/* Set buffer=NULL to get a new one.  */
+STRLEN *
+Perl_new_warnings_bitfield(STRLEN *buffer, const char *const bits,
+                          STRLEN size) {
+    const MEM_SIZE len_wanted = sizeof(STRLEN) + size;
+
+    buffer = specialWARN(buffer) ? PerlMemShared_malloc(len_wanted)
+       : PerlMemShared_realloc(buffer, len_wanted);
+    buffer[0] = size;
+    Copy(bits, (buffer + 1), size, char);
+    return buffer;
+}
 
 /* since we've already done strlen() for both nam and val
  * we can use that info to make things faster than