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How to track down a “double free or corruption” error
...{
char *x = malloc(100);
free(x);
free(x);
return 0;
}
[sand@PS-CNTOS-64-S11 testbox]$ vim t1.c
[sand@PS-CNTOS-64-S11 testbox]$ cc -g t1.c -o t1
[sand@PS-CNTOS-64-S11 testbox]$ ./t1
*** glibc detected *** ./t1: double free or corruption (top): 0x00000000058f7010 ***
======= Backtrace: =========...
How to compile a 64-bit application using Visual C++ 2010 Express?
Is there a simple way to compile a 64 bit app with the 32-bit edition of Visual C++ 2010 Express? What configurations, if any, are necessary?
...
How to display Base64 images in HTML?
I'm having trouble displaying a Base64 image inline.
11 Answers
11
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Binary Data in JSON String. Something better than Base64
... bytes as five characters. However, this is only a 7% improvement over base64, it's more expensive to compute, and implementations are less common than for base64 so it's probably not a win.
You could also simply map every input byte to the corresponding character in U+0000-U+00FF, then do the mini...
How to maintain aspect ratio using HTML IMG tag
...hoto in our application. I have set both its height and width attribute to 64. I need to show any image resolution (e.g. 256x256, 1024x768, 500x400, 205x246, etc.) as 64x64. But by setting the height and width attributes of an img tag to 64, it's not maintaining the aspect ratio, so the image looks ...
Should I use Python 32bit or Python 64bit
I have a win7 64bit installation. Must I use Python 64bit? What are the differences between the 32bit and 64bit Python versions anyway? Do different Python packages (such as south, django, mysqldb etc) support only 32bit/64bit?
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Encoding an image file with base64
I want to encode an image into a string using the base64 module. I've ran into a problem though. How do I specify the image I want to be encoded? I tried using the directory to the image, but that simply leads to the directory being encoded. I want the actual image file to be encoded.
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Can't start Eclipse - Java was started but returned exit code=13
...ing combinations of OS, JDK and Eclipse bitness. In my case, I was using a 64-bit JDK with a 32-bit Eclipse on a 64-bit OS. After downgrading the JDK to 32-bit, Eclipse started working.
Use one of the following combinations.
32-bit OS, 32-bit JDK, 32-bit Eclipse (32-bit only)
64-bit OS, 32-bit JD...
ArrayBuffer to base64 encoded string
I need an efficient (read native) way to convert an ArrayBuffer to a base64 string which needs to be used on a multipart post.
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Does Java casting introduce overhead? Why?
...will need to branch (or fault) on an incorrect branch. ISAs such as 32-bit ARM have conditional instruction and may be able to have the sad path pass through the happy path.
Interfaces are more difficult due to multiple inheritance of interface. Generally the last two casts to interfaces are cached...