Added test case checking initialization of memory layout

src/plugins/e-acsl/tests/runtime/hidden_malloc.c

+/* run.config
+   COMMENT: Malloc executed by a library function
+*/
+
+#include <limits.h>
+#include <stdlib.h>
+
+int main(int argc, const char **argv) {
+  /* If the second argument of `realpath` is NULL it uses malloc.
+     Make sure that memory layout has been initialized. */
+  char *cwd = realpath(".", NULL);
+  return 0;
+}

src/plugins/e-acsl/tests/runtime/oracle/gen_hidden_malloc.c

+/* Generated by Frama-C */
+#include "stdlib.h"
+char *__gen_e_acsl_literal_string;
+/*@ assigns \result, *((char *)x_1 + (0 ..));
+    assigns \result \from *(x_0 + (0 ..)), *((char *)x_1 + (0 ..));
+    assigns *((char *)x_1 + (0 ..))
+      \from *(x_0 + (0 ..)), *((char *)x_1 + (0 ..));
+ */
+extern int ( /* missing proto */ realpath)(char const *x_0, void *x_1);
+
+void __e_acsl_globals_init(void)
+{
+  __gen_e_acsl_literal_string = ".";
+  __e_acsl_store_block((void *)__gen_e_acsl_literal_string,sizeof("."));
+  __e_acsl_full_init((void *)__gen_e_acsl_literal_string);
+  __e_acsl_mark_readonly((void *)__gen_e_acsl_literal_string);
+  return;
+}
+
+int main(int argc, char const **argv)
+{
+  int __retres;
+  int tmp;
+  __e_acsl_memory_init(& argc,(char ***)(& argv),(size_t)8);
+  __e_acsl_globals_init();
+  tmp = realpath(__gen_e_acsl_literal_string,(void *)0);
+  char *cwd = (char *)tmp;
+  __retres = 0;
+  __e_acsl_memory_clean();
+  return __retres;
+}
+
+

src/plugins/e-acsl/tests/runtime/oracle/hidden_malloc.res.oracle

+tests/runtime/hidden_malloc.c:11:[kernel] warning: Calling undeclared function realpath. Old style K&R code?
+[e-acsl] beginning translation.
+tests/runtime/hidden_malloc.c:11:[kernel] warning: Neither code nor specification for function realpath, generating default assigns from the prototype
+[e-acsl] translation done in project "e-acsl".
+tests/runtime/hidden_malloc.c:11:[value] warning: Completely invalid destination for assigns clause *((char *)x_1 + (0 ..)).
+                 Ignoring.