EASY：如何附加Ç阵列中的一个释放内存正确呢？ [英] EASY: How does one release memory correctly in the attached C array?

问题描述

我只是试图找出为什么以下code正在泄漏内存，我有我无法正确释放内存阵列的一个有趣的感觉。这是一个更广泛的Objective-C的应用程序的C函数和我不是本地人到C ......我试着只用free（）的阵列上，但有一种感觉，这并不是故事的全部...

有人能看看，看看我在这里失踪。谢谢！

  CFIndex theNumberOfSettings = 3;
CTParagraphStyleSetting theSettings [3] =
{
    {kCTParagraphStyleSpecifierAlignment，sizeof的（CTTextAlignment），放大器;对齐}，
    {kCTParagraphStyleSpecifierLineSpacing，sizeof的（lineSpacing），放大器; lineSpacing}，
    {kCTParagraphStyleSpecifierHeadIndent，sizeof的（headIndent），放大器; headIndent}
};CTParagraphStyleRef theParagraphRef = CTParagraphStyleCreate（theSettings，theNumberOfSettings）;CFAttributedStringSetAttribute（attrString，CFRangeMake（0，CFAttributedStringGetLength（attrString）-1），kCTParagraphStyleAttributeName，theParagraphRef）;CFRelease（theParagraphRef）;
免费（theSettings）;
 

解决方案

您这样做，这不是在堆上分配释放内存。

I'm just trying to work out why the following code is leaking memory and I have a funny feeling that i'm not releasing the array memory correctly. This is a C function in a wider objective-c app and I'm not native to C... i've tried just using free() on the array, but have a feeling this isn't the whole story...

Could someone have a look and see what I'm missing here. Thanks!

CFIndex theNumberOfSettings = 3;
CTParagraphStyleSetting theSettings[3] =
{
    {kCTParagraphStyleSpecifierAlignment, sizeof(CTTextAlignment), &alignment},
    {kCTParagraphStyleSpecifierLineSpacing, sizeof(lineSpacing), &lineSpacing},
    {kCTParagraphStyleSpecifierHeadIndent, sizeof(headIndent), &headIndent}
};

CTParagraphStyleRef theParagraphRef = CTParagraphStyleCreate(theSettings, theNumberOfSettings);

CFAttributedStringSetAttribute(attrString, CFRangeMake(0, CFAttributedStringGetLength(attrString)-1), kCTParagraphStyleAttributeName, theParagraphRef);

CFRelease(theParagraphRef);
free(theSettings);

解决方案

You don't free memory that's not allocated on the heap.

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