gdbsupport: remove FUNCTION_NAME

__func__ is standard C++11:

    https://en.cppreference.com/w/cpp/language/function

Also, in C++11, __func__ expands to the demangled function name, so the
mention in the comment above FUNCTION_NAME doesn't apply anymore.
Finally, in places where FUNCTION_NAME is used, I think it's enough to
print the function name, no need to print the whole signature.
Therefore, I propose to just remove FUNCTION_NAME and update users to
use the standard __func__.

Change-Id: I778f28155422b044402442dc18d42d0cded1017d

2 files changed, 2 insertions, 33 deletions

diff --git a/gdbsupport/common-utils.h b/gdbsupport/common-utils.h
index 1e90a5c..af07847 100644
--- a/gdbsupport/common-utils.h
+++ b/gdbsupport/common-utils.h
@@ -24,27 +24,7 @@
 #include <vector>
 #include "gdbsupport/byte-vector.h"
 #include "gdbsupport/gdb_unique_ptr.h"
-
 #include "poison.h"
-
-/* If possible, define FUNCTION_NAME, a macro containing the name of
-   the function being defined.  Since this macro may not always be
-   defined, all uses must be protected by appropriate macro definition
-   checks (Eg: "#ifdef FUNCTION_NAME").
-
-   Version 2.4 and later of GCC define a magical variable `__PRETTY_FUNCTION__'
-   which contains the name of the function currently being defined.
-   This is broken in G++ before version 2.6.
-   C9x has a similar variable called __func__, but prefer the GCC one since
-   it demangles C++ function names.  */
-#if (GCC_VERSION >= 2004)
-#define FUNCTION_NAME		__PRETTY_FUNCTION__
-#else
-#if defined __STDC_VERSION__ && __STDC_VERSION__ >= 199901L
-#define FUNCTION_NAME		__func__  /* ARI: func */
-#endif
-#endif
-
 #include "gdb_string_view.h"
 
 /* xmalloc(), xrealloc() and xcalloc() have already been declared in
diff --git a/gdbsupport/gdb_assert.h b/gdbsupport/gdb_assert.h
index 00553a7..bc8ad7b 100644
--- a/gdbsupport/gdb_assert.h
+++ b/gdbsupport/gdb_assert.h
@@ -33,29 +33,18 @@
 
 #define gdb_assert(expr)                                                      \
   ((void) ((expr) ? 0 :                                                       \
-	   (gdb_assert_fail (#expr, __FILE__, __LINE__, FUNCTION_NAME), 0)))
+	   (gdb_assert_fail (#expr, __FILE__, __LINE__, __func__), 0)))
 
 /* This prints an "Assertion failed" message, asking the user if they
    want to continue, dump core, or just exit.  */
-#if defined (FUNCTION_NAME)
 #define gdb_assert_fail(assertion, file, line, function)                      \
   internal_error (file, line, _("%s: Assertion `%s' failed."),                \
 		  function, assertion)
-#else
-#define gdb_assert_fail(assertion, file, line, function)                      \
-  internal_error (file, line, _("Assertion `%s' failed."),                    \
-		  assertion)
-#endif
 
 /* The canonical form of gdb_assert (0).
    MESSAGE is a string to include in the error message.  */
 
-#if defined (FUNCTION_NAME)
-#define gdb_assert_not_reached(message) \
-  internal_error (__FILE__, __LINE__, "%s: %s", FUNCTION_NAME, _(message))
-#else
 #define gdb_assert_not_reached(message) \
-  internal_error (__FILE__, __LINE__, _(message))
-#endif
+  internal_error (__FILE__, __LINE__, "%s: %s", __func__, _(message))
 
 #endif /* COMMON_GDB_ASSERT_H */