# glfwReadImage() crash
**URL:** https://discourse.glfw.org/t/glfwreadimage-crash/466
**Category:** support
**Created:** [March 17, 2004, 7:33pm UTC](https://discourse.glfw.org/t/glfwreadimage-crash/466 "2004-03-17T19:33:31Z")
**Posts on this page:** 9
**Page:** 1
### Author:  [@system](https://discourse.glfw.org/u/system)
#### Post date: [March 17, 2004, 7:33pm UTC](https://discourse.glfw.org/t/glfwreadimage-crash/466/1 "2004-03-17T19:33:31Z")
**nobody** wrote on [Wednesday, March 17, 2004](https://sourceforge.net/p/glfw/discussion/247562/thread/2c4e564b/#87b2):
GLFWimage \*pointer1;
const char name[] = "pointer1.tga";
/\* ERROR \*/ if( ( glfwReadImage ( name, pointer1, GLFW\_NO\_RESCALE\_BIT ) ) == GL\_TRUE );
This compiles fine but crashes the program. If I use glfwLoadTexture2D() (which is not what I want :P) it doesn’t crash, so I guess the image i’m using is fine, right?
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### Author:  [@system](https://discourse.glfw.org/u/system)
#### Post date: [March 17, 2004, 8:45pm UTC](https://discourse.glfw.org/t/glfwreadimage-crash/466/2 "2004-03-17T20:45:02Z")
**[marcus256](https://sourceforge.net/u/marcus256/)** wrote on [Wednesday, March 17, 2004](https://sourceforge.net/p/glfw/discussion/247562/thread/2c4e564b/#87b2/508e):
Hello!
Looking into it…
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### Author:  [@system](https://discourse.glfw.org/u/system)
#### Post date: [March 17, 2004, 8:52pm UTC](https://discourse.glfw.org/t/glfwreadimage-crash/466/3 "2004-03-17T20:52:37Z")
**[marcus256](https://sourceforge.net/u/marcus256/)** wrote on [Wednesday, March 17, 2004](https://sourceforge.net/p/glfw/discussion/247562/thread/2c4e564b/#87b2/b142):
Uhm. Silly error. You need to do this:
GLFWimage pointer1;
const char name[] = "pointer1.tga";
if( ( glfwReadImage ( name, &pointer1, GLFW\_NO\_RESCALE\_BIT ) ) == GL\_TRUE );
"pointer1" must be a valid memory area - glfwReadImage does not create the GLFWimage stuct for you, it simply fills out its fields. Also, do not forget to call glfwFreeImage once you are done with your image.
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### Author:  [@system](https://discourse.glfw.org/u/system)
#### Post date: [March 18, 2004, 8:04am UTC](https://discourse.glfw.org/t/glfwreadimage-crash/466/4 "2004-03-18T08:04:52Z")
**nobody** wrote on [Thursday, March 18, 2004](https://sourceforge.net/p/glfw/discussion/247562/thread/2c4e564b/#87b2/f235):
Ahhh cool it’s solved now. Thanks man! What a quick response 🙂 Keep up the good work!
//here’s the code that works. Just added a line to allocate memory for the GLFWimage structure 🙂
GLFWimage \*pointer1;
pointer1 = new GLFWimage;
const char name[] = “pointer1.tga”;
glfwReadImage ( name, pointer1, GLFW\_NO\_RESCALE\_BIT );
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### Author:  [@system](https://discourse.glfw.org/u/system)
#### Post date: [October 30, 2007, 4:13pm UTC](https://discourse.glfw.org/t/glfwreadimage-crash/466/5 "2007-10-30T16:13:46Z")
**nobody** wrote on [Tuesday, October 30, 2007](https://sourceforge.net/p/glfw/discussion/247562/thread/2c4e564b/#9a34):
GLuint gl\_textures[MAX\_TEXTURES];
GLFWimage img[256];
if (!glfwReadImage("file.tga", &img[ID], 0))
printf("glfwReadImage(): failed; file: "%s"\n", file);
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### Author:  [@system](https://discourse.glfw.org/u/system)
#### Post date: [April 19, 2008, 3:48pm UTC](https://discourse.glfw.org/t/glfwreadimage-crash/466/6 "2008-04-19T15:48:02Z")
**nobody** wrote on [Saturday, April 19, 2008](https://sourceforge.net/p/glfw/discussion/247562/thread/2c4e564b/#f730):
thanks this was also my Problem. I think it would be usefull to put this information in the reference manual.
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### Author:  [@system](https://discourse.glfw.org/u/system)
#### Post date: [May 11, 2008, 5:40am UTC](https://discourse.glfw.org/t/glfwreadimage-crash/466/7 "2008-05-11T05:40:59Z")
**[zacs7](https://sourceforge.net/u/zacs7/)** wrote on [Sunday, May 11, 2008](https://sourceforge.net/p/glfw/discussion/247562/thread/2c4e564b/#619a):
What? Teach you C/C++ as-well?
Did you expect glfwReadImage() to allocate memory for you also? It doesn’t say that it does. It expects a pointer to a GLFWimage struct. It’s labeled as ‘in’ not ‘out’.
Love GLFW, keep up the good work.
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### Author:  [@system](https://discourse.glfw.org/u/system)
#### Post date: [May 11, 2008, 11:27am UTC](https://discourse.glfw.org/t/glfwreadimage-crash/466/8 "2008-05-11T11:27:13Z")
**[elmindreda](https://sourceforge.net/u/elmindreda/)** wrote on [Sunday, May 11, 2008](https://sourceforge.net/p/glfw/discussion/247562/thread/2c4e564b/#619a/f38d):
Please don’t bite people, it improves neither code nor mood.
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### Author:  [@system](https://discourse.glfw.org/u/system)
#### Post date: [May 12, 2008, 4:14am UTC](https://discourse.glfw.org/t/glfwreadimage-crash/466/9 "2008-05-12T04:14:30Z")
**nobody** wrote on [Monday, May 12, 2008](https://sourceforge.net/p/glfw/discussion/247562/thread/2c4e564b/#918a):
He didn’t bite…
I agree it’s implicit, regardless it’s not a GLFW issue.