cpp: Deprecate Error::asString and update users

* lang/cpp/src/error.h (Error::asString): Mark as deprecated.
* lang/cpp/src/context.cpp (operator<<),
lang/cpp/src/editinteractor.cpp (edit_interactor_callback_impl),
lang/cpp/tests/run-getkey.cpp (main),
lang/cpp/tests/run-keylist.cpp (main),
lang/cpp/tests/run-wkdlookup.cpp (main): Use Error::asStdString instead
of Error::asString.
--

GnuPG-bug-id: 7188

3 files changed, 7 insertions, 4 deletions

diff --git a/lang/cpp/src/context.cpp b/lang/cpp/src/context.cpp
index 4882c80c..8150d08b 100644
--- a/lang/cpp/src/context.cpp
+++ b/lang/cpp/src/context.cpp
@@ -195,7 +195,7 @@ Error Error::fromCode(unsigned int err, unsigned int src)
 
 std::ostream &operator<<(std::ostream &os, const Error &err)
 {
-    return os << "GpgME::Error(" << err.encodedError() << " (" << err.asString() << "))";
+    return os << "GpgME::Error(" << err.encodedError() << " (" << err.asStdString() << "))";
 }
 
 Context::KeyListModeSaver::KeyListModeSaver(Context *ctx)
diff --git a/lang/cpp/src/editinteractor.cpp b/lang/cpp/src/editinteractor.cpp
index 72ed92f7..84ddf398 100644
--- a/lang/cpp/src/editinteractor.cpp
+++ b/lang/cpp/src/editinteractor.cpp
@@ -138,7 +138,7 @@ public:
                         if (writeAll(fd, result, len) != len) {
                             err = Error::fromSystemError();
                             if (ei->debug) {
-                                std::fprintf(ei->debug, "EditInteractor: Could not write to fd %d (%s)\n", fd, err.asString());
+                                std::fprintf(ei->debug, "EditInteractor: Could not write to fd %d (%s)\n", fd, err.asStdString().c_str());
                             }
                             goto error;
                         }
@@ -147,7 +147,7 @@ public:
                     if (writeAll(fd, "\n", 1) != 1) {
                         err = Error::fromSystemError();
                         if (ei->debug) {
-                            std::fprintf(ei->debug, "EditInteractor: Could not write to fd %d (%s)\n", fd, err.asString());
+                            std::fprintf(ei->debug, "EditInteractor: Could not write to fd %d (%s)\n", fd, err.asStdString().c_str());
                         }
                         goto error;
                     }
diff --git a/lang/cpp/src/error.h b/lang/cpp/src/error.h
index bc970e36..000b562b 100644
--- a/lang/cpp/src/error.h
+++ b/lang/cpp/src/error.h
@@ -47,7 +47,10 @@ public:
     explicit Error(unsigned int e) : mErr(e), mMessage() {}
 
     const char *source() const;
-    const char *asString() const;
+    /* This function is deprecated. Use asStdString() instead. asString() may
+     * return wrongly encoded (i.e. not UTF-8) results on Windows for the main
+     * thread if the function was first called from a secondary thread. */
+    GPGMEPP_DEPRECATED const char *asString() const;
     std::string asStdString() const;
 
     int code() const;