search for: random_chunks

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2014 Apr 07
2
[LLVMdev] Loop unswitching creates dead code
Hi, I'm surprised by the result of compiling the following lines of code: for (int i = 0; i < RANDOM_CHUNKS; i++) { for (int j = 0; j < RANDOM_CHUNK_SIZE; j++) { random_text[i][j] = (int)(ran()*256); } } The problem happens when -fsanitize=undefined, -fno-sanitize-recover and -O3 are enabled. In this case, UndefinedBehaviorSanitizer inserts check for array index out of bounds, and for...