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  • "Easy to use" is subjective. With a GCC extended assembly block, all we get is a line number pointing to the end of the block (the closing paren), and not the actual variable causing the problem. That's even with --track-origins. Commented Aug 17, 2015 at 15:54
  • @jww this is a gcc problem (not producing enough debug info), not a valgrind problem. It might go away if you compile your source with -ggdb or something, but I'd be surprised. I'm working in llvm backends and its much the same situation there. Commented Aug 18, 2015 at 5:20
  • It seems that purify is no longer a a good option: marlowa.blogspot.com.br/2015/08/the-death-of-purify.html Commented Jan 30, 2018 at 1:13