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fix dereferencing null pointer

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git-svn-id: svn+ssh://svn.gna.org/svn/gnustep/libs/base/trunk@32543 72102866-910b-0410-8b05-ffd578937521
This commit is contained in:
rfm 2011-03-13 10:14:11 +00:00
parent a9b73e8804
commit 2ce7b39e04
1 changed files with 47 additions and 19 deletions
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32
Source/ObjectiveC2/runtime.c
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@ -722,8 +722,14 @@ method_getName(Method method)
unsigned
method_getNumberOfArguments(Method method)
{
const char *types = method->method_types;
if (0 == method)
{
return 0;
}
else
{
unsigned int count = 0;
const char *types = method->method_types;
while ('\0' != *types)
{
@ -732,9 +738,19 @@ method_getNumberOfArguments(Method method)
}
return count - 1;
}
}
void
method_getReturnType(Method method, char *dst, size_t dst_len)
{
if (0 == method)
{
if (dst_len > 0)
{
dst[0] = '\0';
}
}
else
{
//TODO: Coped and pasted code. Factor it out.
const char *types = method->method_types;
@ -745,20 +761,31 @@ method_getReturnType(Method method, char *dst, size_t dst_len)
memcpy(dst, types, length);
dst[length] = '\0';
}
else
else if (dst_len > 0)
{
memcpy(dst, types, dst_len);
}
}
}
const char *
method_getTypeEncoding(Method method)
{
if (0 == method)
{
return 0;
}
return method->method_types;
}
IMP
method_setImplementation(Method method, IMP imp)
{
if (0 == method)
{
return (IMP)0;
}
else
{
IMP old = (IMP) method->method_imp;
@ -766,6 +793,7 @@ method_setImplementation(Method method, IMP imp)
objc_updateDtableForClassContainingMethod(method);
return old;
}
}
id
objc_getClass(const char *name)