GDB: Test that we can step inside function.

tests/gdb/gdb_test_guest.c

Index: tests/gdb/gdb_test_guest.c
===================================================================
--- tests/gdb/gdb_test_guest.c	(revision 9391)
+++ tests/gdb/gdb_test_guest.c	(working copy)
@@ -6,6 +6,7 @@
 
 #include <assert.h>
 #include <string.h>
+#include <alloca.h>
 
 int global_var;
 
@@ -40,6 +41,12 @@
   return global_var;
 }
 
+void function_with_prolog(int arg) {
+  int local_var = arg - 1;
+  global_var = local_var;
+  alloca(1);

[Mark Seaborn, 2012/08/09 00:00:02]

Please add a comment to explain what calling alloca() does here.

[halyavin, 2012/08/09 12:29:20]

Done.

+}
+
 int main(int argc, char **argv) {
   assert(argc >= 2);
 
@@ -58,5 +65,10 @@
     nested_calls(1);
     return 0;
   }
+  if (strcmp(argv[1], "step_from_func_start") == 0) {

[Mark Seaborn, 2012/08/09 00:00:02]

Would it be easier to follow if the entry point name matched the function name?

[halyavin, 2012/08/09 12:29:20]

Done.

+    global_var = 0;
+    function_with_prolog(2);
+    return 0;
+  }
   return 1;
 }