add noexcept

Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>

Author: NikolajBjorner

src/tactic/tactic_exception.h

@@ -26,7 +26,7 @@ class tactic_exception : public z3_exception {
     std::string m_msg;
 public:
     tactic_exception(std::string && msg) : m_msg(std::move(msg)) {}
-    char const * what() const override { return m_msg.c_str(); }
+    char const * what() const noexcept override { return m_msg.c_str(); }
 };
 
 #define TACTIC_CANCELED_MSG      Z3_CANCELED_MSG

src/util/checked_int64.h

@@ -29,7 +29,7 @@ Revision History:
 
 
 class overflow_exception : public z3_exception {
-    char const* what() const override { return "checked_int64 overflow/underflow"; }
+    char const* what() const noexcept override { return "checked_int64 overflow/underflow"; }
 };
 
 template<bool CHECK>

src/util/mpff.h

@@ -182,15 +182,15 @@ class mpff_manager {
     static bool field() { return true; }
 
     class exception : public z3_exception {
-        char const * what() const override { return "multi-precision floating point (mpff) exception"; }
+        char const * what() const noexcept override { return "multi-precision floating point (mpff) exception"; }
     };
 
     class overflow_exception : public exception {
-        char const * what() const override { return "multi-precision floating point (mpff) overflow"; }
+        char const * what() const noexcept override { return "multi-precision floating point (mpff) overflow"; }
     };
 
     class div0_exception : public exception {
-        char const * what() const override { return "multi-precision floating point (mpff) division by zero"; }
+        char const * what() const noexcept override { return "multi-precision floating point (mpff) division by zero"; }
     };
 
     mpff_manager(unsigned prec = 2, unsigned initial_capacity = 1024);

src/util/mpfx.h

@@ -129,15 +129,15 @@ class mpfx_manager {
     static bool field() { return true; }
 
     class exception : public z3_exception {
-        char const * what() const override { return "multi-precision fixed point (mpfx) exception"; }
+        char const * what() const noexcept override { return "multi-precision fixed point (mpfx) exception"; }
     };
 
     class overflow_exception : public exception {
-        char const * what() const override { return "multi-precision fixed point (mpfx) overflow"; }
+        char const * what() const noexcept override { return "multi-precision fixed point (mpfx) overflow"; }
     };
 
     class div0_exception : public exception {
-        char const * what() const override { return "multi-precision fixed point (mpfx) division by zero"; }
+        char const * what() const noexcept override { return "multi-precision fixed point (mpfx) division by zero"; }
     };
 
     mpfx_manager(unsigned int_sz = 2, unsigned frac_sz = 1, unsigned initial_capacity = 1024);