src/share/native/common/check_code.c

rev 8822 : 8024854: PPC64: Basic changes and files to build the class library on AIX
Reviewed-by: alanb, prr, sla, chegar, michaelm, mullan, art
Contributed-by: luchsh@linux.vnet.ibm.com, spoole@linux.vnet.ibm.com, thomas.stuefe@sap.com

*** 88,97 ****
--- 88,132 ----
  #include "jni.h"
  #include "jvm.h"
  #include "classfile_constants.h"
  #include "opcodes.in_out"
  
+ /* On AIX malloc(0) and calloc(0, ...) return a NULL pointer, which is legal,
+  * but the code here does not handles it. So we wrap the methods and return non-NULL
+  * pointers even if we allocate 0 bytes.
+  */
+ #ifdef _AIX
+ static int aix_dummy;
+ static void* aix_malloc(size_t len) {
+   if (len == 0) {
+     return &aix_dummy;
+   }
+   return malloc(len);
+ }
+ 
+ static void* aix_calloc(size_t n, size_t size) {
+   if (n == 0) {
+     return &aix_dummy;
+   }
+   return calloc(n, size);
+ }
+ 
+ static void aix_free(void* p) {
+   if (p == &aix_dummy) {
+     return;
+   }
+   free(p);
+ }
+ 
+ #undef malloc
+ #undef calloc
+ #undef free
+ #define malloc aix_malloc
+ #define calloc aix_calloc
+ #define free aix_free
+ #endif
+ 
  #ifdef __APPLE__
  /* use setjmp/longjmp versions that do not save/restore the signal mask */
  #define setjmp _setjmp
  #define longjmp _longjmp
  #endif