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GCC's nested functions are implemented with trampolines, so there will be a performance penalty. For the amount that you gain, they seem like a bad idea. Tying
by mtdewcmu 12y ago
GCC's nested functions are implemented with trampolines, so there will be a performance penalty. For the amount that you gain, they seem like a bad idea. Tying your code to GCC for the sake of a small amount of convenience is a bad idea.
- billsix 12y agoThe question to which I responded did not inquire about performance nor about portability http://tirania.org/blog/archive/2011/Feb-17.html http://tirania.org/blog/archive/2011/Feb-17.html
- graphitemaster 12y agoWith things like PaX the trampoline method won't work, gcc now creates thunks, which are essentially heap allocated thunks of memory (hence the name) with PROT_EXEC.