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fix compile error when building zig w/ clang

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errors as reported on macOS w/ Xcode 10.1, 10.2 and 11.0:

src/ir.cpp:23285:16: error: variable 'bits' is used uninitialized whenever 'if' condition is false [-Werror,-Wsometimes-uninitialized]
    } else if (float_type->id == ZigTypeIdFloat)
               ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
src/ir.cpp:23288:13: note: uninitialized use occurs here
    switch (bits) {
            ^~~~
src/ir.cpp:23285:12: note: remove the 'if' if its condition is always true
    } else if (float_type->id == ZigTypeIdFloat)
           ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
src/ir.cpp:23281:18: note: initialize the variable 'bits' to silence this warning
    unsigned bits;
This commit is contained in:
Michael Dusan 2019-06-24 15:30:28 -04:00 committed by Andrew Kelley
parent 24400d5882
commit de2b0cd722
1 changed files with 8 additions and 2 deletions
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10
src/ir.cpp
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@ -23280,10 +23280,16 @@ static void ir_eval_float_op(IrAnalyze *ira, IrInstructionFloatOp *source_instr,
BuiltinFnId fop = source_instr->op;
unsigned bits;
if (float_type->id == ZigTypeIdComptimeFloat) {
switch (float_type->id) {
case ZigTypeIdComptimeFloat:
bits = 128;
} else if (float_type->id == ZigTypeIdFloat)
break;
case ZigTypeIdFloat:
bits = float_type->data.floating.bit_count;
break;
default:
zig_unreachable();
}
switch (bits) {
case 16: {