From: Uwe Hermann <redacted>
Date: Sun, 22 Jul 2018 15:07:26 +0000 (+0200)
Subject: Fix multiple C++ bindings warnings with gcc 8.
X-Git-Url: https://sigrok.org/gitaction?a=commitdiff_plain;h=0875f11de44e337397d13af3daf616ec48df6b76;p=libsigrok.git

Fix multiple C++ bindings warnings with gcc 8.

  bindings/cxx/classes.cpp: In function ‘int sigrok::call_log_callback(void*, int, const char*, __va_list_tag*)’:
  bindings/cxx/classes.cpp:242:17: warning: catching polymorphic type ‘class sigrok::Error’ by value [-Wcatch-value=]
    } catch (Error e) {
                   ^
  In file included from bindings/cxx/classes.cpp:1667:
  bindings/cxx/enums.cpp: In static member function ‘static Glib::VariantBase sigrok::ConfigKey::parse_string(std::__cxx11::string, sr_datatype)’:
  bindings/cxx/enums.cpp:789:13: warning: catching polymorphic type ‘class std::invalid_argument’ by value [-Wcatch-value=]
      } catch (invalid_argument) {
               ^~~~~~~~~~~~~~~~
  bindings/cxx/enums.cpp:804:13: warning: catching polymorphic type ‘class std::invalid_argument’ by value [-Wcatch-value=]
      } catch (invalid_argument) {
               ^~~~~~~~~~~~~~~~
---

diff --git a/bindings/cxx/ConfigKey_methods.cpp b/bindings/cxx/ConfigKey_methods.cpp
index ee0a74eb..9c3668ff 100644
--- a/bindings/cxx/ConfigKey_methods.cpp
+++ b/bindings/cxx/ConfigKey_methods.cpp
@@ -90,7 +90,7 @@ Glib::VariantBase ConfigKey::parse_string(string value, enum sr_datatype dt)
 		case SR_T_FLOAT:
 			try {
 				variant = g_variant_new_double(stod(value));
-			} catch (invalid_argument) {
+			} catch (invalid_argument&) {
 				throw Error(SR_ERR_ARG);
 			}
 			break;
@@ -105,7 +105,7 @@ Glib::VariantBase ConfigKey::parse_string(string value, enum sr_datatype dt)
 		case SR_T_INT32:
 			try {
 				variant = g_variant_new_int32(stoi(value));
-			} catch (invalid_argument) {
+			} catch (invalid_argument&) {
 				throw Error(SR_ERR_ARG);
 			}
 			break;
diff --git a/bindings/cxx/classes.cpp b/bindings/cxx/classes.cpp
index bf826e3c..5bc5dc2f 100644
--- a/bindings/cxx/classes.cpp
+++ b/bindings/cxx/classes.cpp
@@ -239,7 +239,7 @@ static int call_log_callback(void *cb_data, int loglevel,
 
 	try {
 		(*callback)(LogLevel::get(loglevel), message.get());
-	} catch (Error e) {
+	} catch (Error &e) {
 		return e.result;
 	}