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| author | Alon Zakai <azakai@google.com> | 2020-07-21 09:15:27 -0700 |
|---|---|---|
| committer | GitHub <noreply@github.com> | 2020-07-21 09:15:27 -0700 |
| commit | 71c9572e8bdcf05306e6df1fb3bd1afc924d2f83 (patch) | |
| tree | 2e29b9b952b2eced617f26d315ec5683821300dc /src/support/safe_integer.cpp | |
| parent | 8da3c515bd13b3621047849548b7dc0c5586ec89 (diff) | |
| download | binaryen-71c9572e8bdcf05306e6df1fb3bd1afc924d2f83.tar.gz binaryen-71c9572e8bdcf05306e6df1fb3bd1afc924d2f83.tar.bz2 binaryen-71c9572e8bdcf05306e6df1fb3bd1afc924d2f83.zip | |
Fix i32.trunc_f64_s of values near the limit of f64 representation (#2968)
See WebAssembly/spec#1223
Diffstat (limited to 'src/support/safe_integer.cpp')
| -rw-r--r-- | src/support/safe_integer.cpp | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/src/support/safe_integer.cpp b/src/support/safe_integer.cpp index d43f7a6aa..9b6b56be0 100644 --- a/src/support/safe_integer.cpp +++ b/src/support/safe_integer.cpp @@ -124,7 +124,7 @@ bool wasm::isInRangeI64TruncU(int32_t i) { * 3 21098765432 1098...432109...210 * --------------------------------- * 0 00000000000 0000...000000...000 0x0000000000000000 => 0 - * 0 10000011101 1111...111000...000 0x41dfffffffc00000 => 2147483647 (INT32_MAX) + * 0 10000011101 1111...111000...111 0x41dfffffffffffff => 2147483647.9999998 (rounds down to INT32_MAX) * 0 10000011110 1111...111100...000 0x41efffffffe00000 => 4294967295 (UINT32_MAX) * 0 10000111101 1111...111111...111 0x43dfffffffffffff => 9223372036854774784 (~INT64_MAX) * 0 10000111110 0000...000000...000 0x43e0000000000000 => 9223372036854775808 @@ -146,7 +146,7 @@ bool wasm::isInRangeI64TruncU(int32_t i) { bool wasm::isInRangeI32TruncS(int64_t i) { uint64_t u = i; - return (u <= 0x41dfffffffc00000ULL) || + return (u <= 0x41dfffffffffffffULL) || (u >= 0x8000000000000000ULL && u <= 0xc1e0000000000000ULL); } |