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fix behavior safety checks

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git-svn-id: svn+ssh://svn.gna.org/svn/gnustep/libs/base/trunk@29846 72102866-910b-0410-8b05-ffd578937521
This commit is contained in:
Richard Frith-MacDonald 2010-03-05 08:39:41 +00:00
parent 45568ac01f
commit 4451967349
1 changed files with 34 additions and 5 deletions
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39
Source/Additions/GSObjCRuntime.m
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@ -788,12 +788,41 @@ GSObjCAddClassBehavior(Class receiver, Class behavior)
Method *methods;
Class behavior_super_class = class_getSuperclass(behavior);
NSCAssert(NO == class_isMetaClass(receiver), NSInvalidArgumentException);
NSCAssert(NO == class_isMetaClass(behavior), NSInvalidArgumentException);
if (YES == class_isMetaClass(receiver))
{
fprintf(stderr, "Trying to add behavior (%s) to meta class (%s)\n",
class_getName(behavior), class_getName(receiver));
abort();
}
if (YES == class_isMetaClass(behavior))
{
fprintf(stderr, "Trying to add meta class as behavior (%s) to (%s)\n",
class_getName(behavior), class_getName(receiver));
abort();
}
if (class_getInstanceSize(receiver) < class_getInstanceSize(behavior))
{
const char *b = class_getName(behavior);
const char *r = class_getName(receiver);
NSCAssert2(class_getInstanceSize(receiver) < class_getInstanceSize(behavior),
@"Trying to add behavior (%s) with instance size larger than class (%s)",
class_getName(behavior), class_getName(receiver));
#ifdef NeXT_Foundation_LIBRARY
fprintf(stderr, "Trying to add behavior (%s) with instance "
"size larger than class (%s)\n", b, r);
abort();
#else
/* As a special case we allow adding GSString/GSCString to the
* constant string class ... since we know the base library
* takes care not to access non-existent instance variables.
*/
if ((strcmp(b, "GSCString") && strcmp(b, "GSString"))
|| (strcmp(r, "NSConstantString") && strcmp(r, "NXConstantString")))
{
fprintf(stderr, "Trying to add behavior (%s) with instance "
"size larger than class (%s)\n", b, r);
abort();
}
#endif
}
BDBGPrintf("Adding behavior to class %s\n", class_getName(receiver));
BDBGPrintf(" instance methods from %s\n", class_getName(behavior));