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Full Discussion: c calling conventions
Top Forums Programming c calling conventions Post 302432005 by jasondj on Wednesday 23rd of June 2010 12:17:50 PM
Old 06-23-2010
There are some security issues that can also arise if a user is intimately familiar with how parameters are pushed on to the stack. Buffer overflow attacks, stack smashing, and heap smashing are all common ways to attack vulnerable code. Additionally, format string issues might allow a user to view what is on the stack. Imagine if you wrote a C program that takes user input and prints back what the user typed. Now imagine what would happen if the user typed "%x%x%x%x%x%x..." it would essentially print whats on the stack in hex format.
 

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GLPUSHNAME(3G)															    GLPUSHNAME(3G)

NAME
glPushName, glPopName - push and pop the name stack C SPECIFICATION
void glPushName( GLuint name ) PARAMETERS
name Specifies a name that will be pushed onto the name stack. C SPECIFICATION
void glPopName( void ) DESCRIPTION
The name stack is used during selection mode to allow sets of rendering commands to be uniquely identified. It consists of an ordered set of unsigned integers and is initially empty. glPushName causes name to be pushed onto the name stack. glPopName pops one name off the top of the stack. The maximum name stack depth is implementation-dependent; call GL_MAX_NAME_STACK_DEPTH to find out the value for a particular implementa- tion. It is an error to push a name onto a full stack, or to pop a name off an empty stack. It is also an error to manipulate the name stack between the execution of glBegin and the corresponding execution of glEnd. In any of these cases, the error flag is set and no other change is made to GL state. The name stack is always empty while the render mode is not GL_SELECT. Calls to glPushName or glPopName while the render mode is not GL_SELECT are ignored. ERRORS
GL_STACK_OVERFLOW is generated if glPushName is called while the name stack is full. GL_STACK_UNDERFLOW is generated if glPopName is called while the name stack is empty. GL_INVALID_OPERATION is generated if glPushName or glPopName is executed between a call to glBegin and the corresponding call to glEnd. ASSOCIATED GETS
glGet with argument GL_NAME_STACK_DEPTH glGet with argument GL_MAX_NAME_STACK_DEPTH SEE ALSO
glInitNames(3G), glLoadName(3G), glRenderMode(3G), glSelectBuffer(3G) GLPUSHNAME(3G)
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