ext/cosmos/ext/crc/crc.c in cosmos-3.6.3 vs ext/cosmos/ext/crc/crc.c in cosmos-3.7.0

@@ -88,12 +88,12 @@
 /*
  * Calculate a 16-bit CRC
  */
 static VALUE crc16_calculate(int argc, VALUE* argv, VALUE self)
 {
-  VALUE param_data = Qnil;
-  VALUE param_seed = Qnil;
+  volatile VALUE param_data = Qnil;
+  volatile VALUE param_seed = Qnil;
   unsigned char* data = NULL;
   unsigned short* table = NULL;
   int i = 0;
   long length = 0;
   unsigned short crc = 0;
@@ -165,12 +165,12 @@
 /*
  * Calculate a 32-bit CRC
  */
 static VALUE crc32_calculate(int argc, VALUE* argv, VALUE self)
 {
-  VALUE param_data = Qnil;
-  VALUE param_seed = Qnil;
+  volatile VALUE param_data = Qnil;
+  volatile VALUE param_seed = Qnil;
   unsigned char* data = NULL;
   unsigned int* table = NULL;
   int i = 0;
   long length = 0;
   unsigned int crc = 0;
@@ -242,11 +242,11 @@
 /*
  * Calculate a 64-bit CRC
  */
 static VALUE crc64_calculate(int argc, VALUE* argv, VALUE self)
 {
-  VALUE param_data = Qnil;
-  VALUE param_seed = Qnil;
+  volatile VALUE param_data = Qnil;
+  volatile VALUE param_seed = Qnil;
   unsigned char* data = NULL;
   unsigned long long* table = NULL;
   int i = 0;
   long length = 0;
   unsigned long long crc = 0;