[libGD] #185 [Task opened] memory leaks in XpmReadFileToXpmImage()

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A new Flyspray task has been opened.  Details are below. 

User who did this - Takeshi Abe (Takeshi) 

Attached to Project - libGD
Summary - memory leaks in XpmReadFileToXpmImage() 
Task Type - Bug Report
Category - Image Import/Export
Status - Assigned
Assigned To - Takeshi Abe
Operating System - All
Severity - Medium
Priority - Normal
Reported Version - 2.0.35
Due in Version - 2.0.36
Due Date - Undecided
Details - As Brian Peschel reported in gd-devel;

the following function results in memleaks:
<code>
void XpmImageConverter::getImageDimensions()
{
    gdImagePtr image;
    char tmpFilename[_fname.length() + 1];

    // GD doesn't like const pointers :(
    strcpy(tmpFilename, _fname.c_str());
    if ((image = gdImageCreateFromXpm(tmpFilename)) == NULL)
    {
     	std::cerr << "Failed to open jpeg file \"" << _fname << "\"" << std::endl;
	return;
    }

    imageWidth = gdImageSX(image);
    imageHeight = gdImageSY(image);

    gdImageDestroy(image);
}
</code>

According to Valgrind, this is leaking a lot of memory (for small images, largest is 48x48 pixels, most are 24x24 pixels):
<code>
==16200== 32,731,968 bytes in 33 blocks are possibly lost in loss record 744 of 744
==16200==    at 0x4005525: malloc (vg_replace_malloc.c:149)
==16200==    by 0xD9067A: xpmParseData (in /usr/lib/libXpm.so.4.11.0)
==16200==    by 0xD893B9: XpmReadFileToXpmImage (in /usr/lib/libXpm.so.4.11.0)
==16200==    by 0x80CBED5: gdImageCreateFromXpm (in )
==16200==    by 0x437E45F: XpmImageConverter::getImageDimensions() ()
</code>

This is on Fedora 8, gcc 4.1.2-33, gd 2.0.35, and libXpm 3.5.7.


More information can be found at the following URL:
http://bugs.libgd.org/?do=details&task_id=185

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