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UNREACHABLE now generates warning if hit in debug mode (as per philip's request - good idea :) )

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This was SVN commit r3123.
This commit is contained in:
janwas 2005-11-09 04:11:13 +00:00
parent 64f98cccc0
commit c3e70463d7
1 changed files with 6 additions and 2 deletions
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8
source/lib/lib.h
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@ -313,9 +313,13 @@ enum LibError
// indicates a piece of code cannot be reached (e.g. because all
// control paths before it end up returning). this is mostly for
// human benefit, but it may also help optimization.
// human benefit, but it may also help optimization and warns in debug mode.
#if MSC_VERSION
# define UNREACHABLE __assume(0)
# ifndef NDEBUG
# define UNREACHABLE debug_warn("hit supposedly unreachable code");
# else
# define UNREACHABLE __assume(0)
# endif
#else
# define UNREACHABLE
#endif