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torque: workaround stod() limitations on Solaris

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std::stod() on Solaris does not currently handle hex strings.
This commit provides a workaround based on strtol() until proper
stod() support is available.

This was encountered while updating Node.js to V8 8.8. For more
details see the following comment:

https://github.com/nodejs/node/pull/36139#issuecomment-740131942

Change-Id: I16ed80a817f6d9105e7153b10824b1fee8520432
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2692746
Reviewed-by: Michael Stanton <mvstanton@chromium.org>
Commit-Queue: Michael Stanton <mvstanton@chromium.org>
Cr-Commit-Position: refs/heads/master@{#73255}
This commit is contained in:
cjihrig 2021-02-17 10:19:54 -05:00 committed by Commit Bot
parent 7585aaf3e3
commit 1648e050ca
1 changed files with 11 additions and 0 deletions
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11
src/torque/torque-parser.cc
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@ -1834,7 +1834,18 @@ base::Optional<ParseResult> MakeNumberLiteralExpression(
// Meanwhile, we type it as constexpr float64 when out of int32 range.
double value = 0;
try {
#if defined(V8_OS_SOLARIS)
// stod() on Solaris does not currently support hex strings. Use strtol()
// specifically for hex literals until stod() support is available.
if (number.find("0x") == std::string::npos &&
number.find("0X") == std::string::npos) {
value = std::stod(number);
} else {
value = static_cast<double>(strtol(number.c_str(), nullptr, 0));
}
#else
value = std::stod(number);
#endif // !defined(V8_OS_SOLARIS)
} catch (const std::out_of_range&) {
Error("double literal out-of-range").Throw();
}