diff options
| -rw-r--r-- | src/wasm-s-parser.h | 12 |
1 files changed, 8 insertions, 4 deletions
diff --git a/src/wasm-s-parser.h b/src/wasm-s-parser.h index 30ee0da02..0d3b60786 100644 --- a/src/wasm-s-parser.h +++ b/src/wasm-s-parser.h @@ -706,17 +706,20 @@ private: std::cerr << "make constant " << str << " ==> " << ret->value << '\n'; return ret; } - if (str[0] == 'n' && str[1] == 'a' && str[2] == 'n' && str[3] == ':') { - assert(str[4] == '0' && str[5] == 'x'); + bool negative = str[0] == '-'; + const char *positive = negative ? str + 1 : str; + if (positive[0] == 'n' && positive[1] == 'a' && positive[2] == 'n' && positive[3] == ':') { + assert(positive[4] == '0' && positive[5] == 'x'); switch (type) { case f32: { union { uint32_t pattern; float f; } u; - std::istringstream istr(str+4); + std::istringstream istr(positive+4); istr >> std::hex >> u.pattern; u.pattern |= 0x7f800000; + if (negative) u.pattern |= -1; if (!isnan(u.f)) u.pattern |= 1; assert(isnan(u.f)); ret->value.f32 = u.f; @@ -727,9 +730,10 @@ private: uint64_t pattern; double d; } u; - std::istringstream istr(str+4); + std::istringstream istr(positive+4); istr >> std::hex >> u.pattern; u.pattern |= 0x7ff0000000000000LL; + if (negative) u.pattern |= -1LL; if (!isnan(u.d)) u.pattern |= 1; assert(isnan(u.d)); ret->value.f64 = u.d; |