Use strtod instead of istringstream+locale for parsing floats.

src/compiler/preprocessor/numeric_lex.h

@@ -48,23 +48,10 @@ bool numeric_lex_int(const std::string &str, IntType *value)
 template <typename FloatType>
 bool numeric_lex_float(const std::string &str, FloatType *value)
 {
-// On 64-bit Intel Android, istringstream is broken.  Until this is fixed in
-// a newer NDK, don't use it.  Android doesn't have locale support, so this
-// doesn't have to force the C locale.
-// TODO(thakis): Remove this once this bug has been fixed in the NDK and
-// that NDK has been rolled into chromium.
-#if defined(ANGLE_PLATFORM_ANDROID) && __x86_64__
-    *value = strtod(str.c_str(), nullptr);
-    return errno != ERANGE;
-#else
-    std::istringstream stream(str);
-    // Force "C" locale so that decimal character is always '.', and
-    // not dependent on the current locale.
-    stream.imbue(std::locale::classic());
-
-    stream >> (*value);
-    return !stream.fail() && std::isfinite(*value);
-#endif
+    // Some platforms have issues with the usage of std::locale and std::stringstream and cause
+    // crashes. Usage of strtod appears to be safe.
+    *value = static_cast<FloatType>(strtod(str.c_str(), nullptr));
+    return errno != ERANGE && std::isfinite(*value);
 }
 
 }  // namespace pp.