fixes for string ref and stack alloc

Signed-off-by: Pratik Mankawde <3397372+pratikmankawde@users.noreply.github.com>

include/xrpl/protocol/ErrorCodes.h

@@ -229,7 +229,7 @@ missing_field_error(std::string const& name)
 }
 
 inline Json::Value
-missing_field_error(Json::StaticString name)
+missing_field_error(Json::StaticString const& name)
 {
     return missing_field_error(std::string(name));
 }
@@ -247,7 +247,7 @@ object_field_error(std::string const& name)
 }
 
 inline Json::Value
-object_field_error(Json::StaticString name)
+object_field_error(Json::StaticString const& name)
 {
     return object_field_error(std::string(name));
 }
@@ -259,7 +259,7 @@ invalid_field_message(std::string const& name)
 }
 
 inline std::string
-invalid_field_message(Json::StaticString name)
+invalid_field_message(Json::StaticString const& name)
 {
     return invalid_field_message(std::string(name));
 }
@@ -271,7 +271,7 @@ invalid_field_error(std::string const& name)
 }
 
 inline Json::Value
-invalid_field_error(Json::StaticString name)
+invalid_field_error(Json::StaticString const& name)
 {
     return invalid_field_error(std::string(name));
 }
@@ -283,7 +283,7 @@ expected_field_message(std::string const& name, std::string const& type)
 }
 
 inline std::string
-expected_field_message(Json::StaticString name, std::string const& type)
+expected_field_message(Json::StaticString const& name, std::string const& type)
 {
     return expected_field_message(std::string(name), type);
 }
@@ -295,7 +295,7 @@ expected_field_error(std::string const& name, std::string const& type)
 }
 
 inline Json::Value
-expected_field_error(Json::StaticString name, std::string const& type)
+expected_field_error(Json::StaticString const& name, std::string const& type)
 {
     return expected_field_error(std::string(name), type);
 }

src/libxrpl/basics/Number.cpp

@@ -11,6 +11,7 @@
 #include <numeric>
 #include <stdexcept>
 #include <string>
+#include <string_view>
 #include <type_traits>
 #include <utility>
 
@@ -107,7 +108,7 @@ public:
         int& exponent,
         internalrep const& minMantissa,
         internalrep const& maxMantissa,
-        std::string location);
+        std::string_view location);
 
     // Modify the result to the correctly rounded value
     template <UnsignedMantissa T>
@@ -116,7 +117,7 @@ public:
 
     // Modify the result to the correctly rounded value
     void
-    doRound(rep& drops, std::string location);
+    doRound(rep& drops, std::string_view location);
 
 private:
     void
@@ -238,7 +239,7 @@ Number::Guard::doRoundUp(
     int& exponent,
     internalrep const& minMantissa,
     internalrep const& maxMantissa,
-    std::string location)
+    std::string_view location)
 {
     auto r = round();
     if (r == 1 || (r == 0 && (mantissa & 1) == 1))
@@ -254,7 +255,7 @@ Number::Guard::doRoundUp(
     }
     bringIntoRange(negative, mantissa, exponent, minMantissa);
     if (exponent > maxExponent)
-        throw std::overflow_error(location);
+        Throw<std::overflow_error>(std::string(location));
 }
 
 template <UnsignedMantissa T>
@@ -276,7 +277,7 @@ Number::Guard::doRoundDown(bool& negative, T& mantissa, int& exponent, internalr
 
 // Modify the result to the correctly rounded value
 void
-Number::Guard::doRound(rep& drops, std::string location)
+Number::Guard::doRound(rep& drops, std::string_view location)
 {
     auto r = round();
     if (r == 1 || (r == 0 && (drops & 1) == 1))
@@ -290,7 +291,7 @@ Number::Guard::doRound(rep& drops, std::string location)
             // or "(maxRep + 1) / 10", neither of which will round up when
             // converting to rep, though the latter might overflow _before_
             // rounding.
-            throw std::overflow_error(location);  // LCOV_EXCL_LINE
+            throw std::overflow_error(std::string(location));  // LCOV_EXCL_LINE
         }
         ++drops;
     }

src/libxrpl/protocol/STAmount.cpp

@@ -984,7 +984,12 @@ amountFromJson(SField const& name, Json::Value const& v)
     else if (v.isString())
     {
         std::string val = v.asString();
+        // Pre-allocate to avoid reallocation during split. This function is often
+        // called deep in the RPC stack (via JSON parsing) where stack space is
+        // limited. ASAN detected stack-buffer-overflow here at ~95% coroutine
+        // stack usage (1001376/1048576 bytes). Coroutine stack increased to 2MB.
         std::vector<std::string> elements;
+        elements.reserve(3);
         boost::split(elements, val, boost::is_any_of("\t\n\r ,/"));
 
         if (elements.size() > 3)