Forum : ST7/STM8
Original Post
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September 1, 2010 - 2:52pm
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Hi, I want to keep optimization enabled but force a certain section of code not to be removed/changed during optimization. For example, when debugging sometimes it's nice to check preprocessor definitions by assigning to a temp variable, but I don't do anything with that variable so it would get optimized out. Is there a way to do something like this? #define X (12*34) // Would be 408 #define Y ((X-56)/78) // Would be 4 void init() { unsigned int u; // temporary local variable for debugging ... //** Don't optimize this section!! u = X; // Set breakpoint here u = Y; // Check me //** } ... |
Hi,
Declaring variable u as volatile will forbid any optimization on it:
I hope it helps.
Best Regards,
Vincent
Thank you, Vincent, that is a helpful trick; I forgot I could do that.