a7eb6819da
Every GPU API defines things this way, but C++ does not (until C++20). Forcing the shift-as-unsigned prevents UBSAN warnings. Bug: oss-fuzz:29093 Change-Id: Ie82e25c46e28446ffc42a40172ca6b272bf1c362 Reviewed-on: https://skia-review.googlesource.com/c/skia/+/363937 Reviewed-by: John Stiles <johnstiles@google.com> Commit-Queue: Brian Osman <brianosman@google.com>
27 lines
616 B
Plaintext
27 lines
616 B
Plaintext
uniform half4 colorRed, colorGreen;
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bool test() {
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bool ok = true;
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int x = 12 | 6;
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ok = ok && (x == 14);
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x = 254 & 7;
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ok = ok && (x == 6);
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x = 2 ^ 7;
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ok = ok && (x == 5);
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x = 1 << 4;
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ok = ok && (x == 16);
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// Left-shifting a negative integer is undefined in C++, but allowed in GPU shading languages.
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// https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=29093
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x = -2 << 2;
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ok = ok && (x == -8);
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x = 128 >> 2;
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ok = ok && (x == 32);
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x = 123 % 45;
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ok = ok && (x == 33);
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return ok;
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}
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half4 main() {
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return test() ? colorGreen : colorRed;
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}
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