# HG changeset patch
# User Mike Becker <universe@uap-core.de>
# Date 1632672111 -7200
# Node ID 38ee262e8b946bad0357bc3be5f061029f57f3de
# Parent  f1e4c6dabfb4419cbc7801c9c5e11119ff4433bf
add attributes to allocator functions

diff -r f1e4c6dabfb4 -r 38ee262e8b94 src/allocator.c
--- a/src/allocator.c	Sun Sep 26 17:58:27 2021 +0200
+++ b/src/allocator.c	Sun Sep 26 18:01:51 2021 +0200
@@ -29,21 +29,23 @@
 #include "cx/allocator.h"
 
 #include <stdlib.h>
-#include <errno.h>
 
-void *cx_malloc_stdlib(void *unused, size_t n) {
+__attribute__((malloc))
+void *cx_malloc_stdlib(__attribute__((unused)) void *d, size_t n) {
     return malloc(n);
 }
 
-void *cx_realloc_stdlib(void *unused, void *mem, size_t n) {
+void *cx_realloc_stdlib(__attribute__((unused)) void *d, void *mem, size_t n) {
     return realloc(mem, n);
 }
 
-void *cx_calloc_stdlib(void *unused, size_t nelem, size_t n) {
+__attribute__((malloc))
+void *cx_calloc_stdlib(__attribute__((unused)) void *d, size_t nelem, size_t n) {
     return calloc(nelem, n);
 }
 
-void cx_free_stdlib(void *unused, void *mem) {
+__attribute__((nonnull))
+void cx_free_stdlib(__attribute__((unused)) void *d, void *mem) {
     free(mem);
 }
 
@@ -60,6 +62,8 @@
 };
 CxAllocator cxDefaultAllocator = &cx_default_allocator;
 
+/* IMPLEMENTATION OF HIGH LEVEL API */
+
 void *cxMalloc(CxAllocator allocator, size_t n) {
     return allocator->cl->malloc(allocator->data, n);
 }
@@ -69,10 +73,6 @@
 }
 
 int cxReallocate(CxAllocator allocator, void **mem, size_t n) {
-    if (mem == NULL) {
-        errno = EINVAL;
-        return 1;
-    }
     void* nmem = allocator->cl->realloc(allocator->data, *mem, n);
     if (nmem == NULL) {
         return 1;
diff -r f1e4c6dabfb4 -r 38ee262e8b94 src/cx/allocator.h
--- a/src/cx/allocator.h	Sun Sep 26 17:58:27 2021 +0200
+++ b/src/cx/allocator.h	Sun Sep 26 18:01:51 2021 +0200
@@ -118,6 +118,7 @@
  * @param n the number of bytes
  * @return a pointer to the allocated memory
  */
+__attribute__ ((malloc))
 void *cxMalloc(CxAllocator allocator, size_t n);
 
 /**
@@ -149,6 +150,7 @@
  * @param n the new size in bytes
  * @return zero on success, non-zero on failure
  */
+__attribute__ ((nonnull))
 int cxReallocate(CxAllocator allocator, void **mem, size_t n);
 
 /**
@@ -159,6 +161,7 @@
  * @param n the size of each element in bytes
  * @return a pointer to the allocated memory
  */
+__attribute__ ((malloc))
 void *cxCalloc(CxAllocator allocator, size_t nelem, size_t n);
 
 /**
@@ -169,6 +172,7 @@
  * @param allocator the allocator
  * @param mem a pointer to the block to free
  */
+__attribute__((nonnull))
 void cxFree(CxAllocator allocator, void *mem);
 
 #ifdef __cplusplus
diff -r f1e4c6dabfb4 -r 38ee262e8b94 test/test_allocator.c
--- a/test/test_allocator.c	Sun Sep 26 17:58:27 2021 +0200
+++ b/test/test_allocator.c	Sun Sep 26 18:01:51 2021 +0200
@@ -60,12 +60,6 @@
     free(test);
 }
 
-void test_reallocate_null(void) {
-    int rval = cxReallocate(cxDefaultAllocator, NULL, 16);
-    CU_ASSERT_NOT_EQUAL(rval, 0);
-    CU_ASSERT_EQUAL(errno, EINVAL);
-}
-
 void test_default_calloc(void) {
     void *test = cxCalloc(cxDefaultAllocator, 8, 2);
     CU_ASSERT_PTR_NOT_NULL(test)
@@ -96,7 +90,6 @@
             !CU_add_test(suite, "test of malloc()", test_default_malloc)||
             !CU_add_test(suite, "test of realloc()", test_default_realloc) ||
             !CU_add_test(suite, "test of realloc() via cxReallocate", test_default_reallocate) ||
-            !CU_add_test(suite, "test of cxReallocate with NULL", test_reallocate_null) ||
             !CU_add_test(suite, "test of calloc()", test_default_calloc) ||
             !CU_add_test(suite, "test of free()", test_default_free)
             ) {