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Re: Global and Static Variable initialisation Problem on MAC-OSX 10.3.3 & GCC 3.3 ........




On Feb 6, 2006, at 10:20 AM, Cliff Russell wrote:

Gaurav,

Generally getting global and static variables to work correctly is relatively straight forward. Can you post some code snippets showing the general organization of the classes and object you are having trouble with, and perhaps someone on the list can help.

The only things that I can think of that could cause the problems your seeing are, either a misunderstanding of how global and static variables work. Or, you in your code you have one or more global or static variables that depend on other global/static variables being initialized. Some compilers allow you to control the order that globals and statics are initialized, I don't know if gcc is one of those compilers. Typically, the safest route is to write your code in such a way that the order that global and statics are initialized isn't important.

C (and C++) offer no guarantees that about the order that global variables are initialized other than constant init will happen before nontrivial ctors (for c++). Relying on the order is a mistake and your code _will_ break.


- Steve

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References: 
 >Global and Static Variable initialisation Problem on MAC-OSX 10.3.3 & GCC 3.3 ........ (From: Gaurav Kumar <email@hidden>)
 >Re: Global and Static Variable initialisation Problem on MAC-OSX 10.3.3 & GCC 3.3 ........ (From: Cliff Russell <email@hidden>)



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