Mercurial > projects > ldc
diff runtime/internal/arrayInit.d @ 1328:c78fd2d30da1
Changed array slice copying to call a runtime function when assertions or array bound checks are enabled instead of just doing a memcpy. This makes sure an exception is thrown if the copy is invalid (ie. different lengths or overlap). Fixes ticket #283 . Rebuilding the runtime is necessary.
| author | Tomas Lindquist Olsen <tomas.l.olsen gmail com> |
|---|---|
| date | Sun, 10 May 2009 02:23:05 +0200 |
| parents | 6b2c75bd86dd |
| children | b3ba2c6ff038 |
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--- a/runtime/internal/arrayInit.d Sun May 10 00:50:35 2009 +0200 +++ b/runtime/internal/arrayInit.d Sun May 10 02:23:05 2009 +0200 @@ -156,3 +156,14 @@ } return (len*elemsz)/newelemsz; } + +// slice copy when assertions are enabled +void _d_array_slice_copy(void* dst, size_t dstlen, void* src, size_t srclen) +{ + if (dstlen != srclen) + throw new Exception("lengths don't match for array copy"); + else if (dst+dstlen <= src || src+srclen <= dst) + llvm_memcpy(dst, src, dstlen, 0); + else + throw new Exception("overlapping array copy"); +}