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| author | Alon Zakai <alonzakai@gmail.com> | 2015-11-05 19:18:48 -0800 |
|---|---|---|
| committer | Alon Zakai <alonzakai@gmail.com> | 2015-11-05 19:18:48 -0800 |
| commit | bafa09a4ae9df0a1eb97847a2c1eb51bfac0de5c (patch) | |
| tree | b51cd002d8f3cee28fbc73de2a02b6f6bdd22a35 /src/wasm-interpreter.h | |
| parent | 72b5a8e5effd9043f1e868e399ef84648a869a15 (diff) | |
| download | binaryen-bafa09a4ae9df0a1eb97847a2c1eb51bfac0de5c.tar.gz binaryen-bafa09a4ae9df0a1eb97847a2c1eb51bfac0de5c.tar.bz2 binaryen-bafa09a4ae9df0a1eb97847a2c1eb51bfac0de5c.zip | |
divide by 0
Diffstat (limited to 'src/wasm-interpreter.h')
| -rw-r--r-- | src/wasm-interpreter.h | 20 |
1 files changed, 16 insertions, 4 deletions
diff --git a/src/wasm-interpreter.h b/src/wasm-interpreter.h index 7b8812d69..8277ec579 100644 --- a/src/wasm-interpreter.h +++ b/src/wasm-interpreter.h @@ -369,8 +369,14 @@ public: case Add: return Flow(Literal(l + r)); case Sub: return Flow(Literal(l - r)); case Mul: return Flow(Literal(l * r)); - case DivS: return Flow(Literal(l / r)); - case DivU: return Flow(Literal(int32_t(uint32_t(l) / uint32_t(r)))); + case DivS: { + if (r == 0) trap(); + return Flow(Literal(l / r)); + } + case DivU: { + if (r == 0) trap(); + return Flow(Literal(int32_t(uint32_t(l) / uint32_t(r)))); + } case RemS: return Flow(Literal(l % r)); case RemU: return Flow(Literal(int32_t(uint32_t(l) % uint32_t(r)))); case And: return Flow(Literal(l & r)); @@ -387,8 +393,14 @@ public: case Add: return Flow(Literal(l + r)); case Sub: return Flow(Literal(l - r)); case Mul: return Flow(Literal(l * r)); - case DivS: return Flow(Literal(l / r)); - case DivU: return Flow(Literal(int64_t(uint64_t(l) / uint64_t(r)))); + case DivS: { + if (r == 0) trap(); + return Flow(Literal(l / r)); + } + case DivU: { + if (r == 0) trap(); + return Flow(Literal(int32_t(uint32_t(l) / uint32_t(r)))); + } case RemS: return Flow(Literal(l % r)); case RemU: return Flow(Literal(int64_t(uint64_t(l) % uint64_t(r)))); case And: return Flow(Literal(l & r)); |