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fix Issue 18734 - bitnum parameter of core.bitop.bt should be signed #3141

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fix Issue 18734 - bitnum parameter of core.bitop.bt should be signed #3141

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2 changes: 1 addition & 1 deletion src/core/bitop.d
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Original file line number Diff line number Diff line change
Expand Up @@ -267,7 +267,7 @@ unittest
* (No longer an intrisic - the compiler recognizes the patterns
* in the body.)
*/
int bt(const scope size_t* p, size_t bitnum) pure @system
int bt(const scope size_t* p, ptrdiff_t bitnum) pure @system
{
static if (size_t.sizeof == 8)
return ((p[bitnum >> 6] & (1L << (bitnum & 63)))) != 0;
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