Debugger: Remove workaround for GDB < 7.2 missing frame.block

This practically means that the >= 7.2 requirement is now a hard
requirement.

Change-Id: I6c3abbc625443ded182d2da101e04d96e3bed26d
Reviewed-by: Friedemann Kleint <Friedemann.Kleint@digia.com>

share/qtcreator/dumper/bridge.py

@@ -154,13 +154,6 @@ try:
             warn("FRAME NOT ACCESSIBLE FOR UNKNOWN REASONS")
             return []
 
-        # New in 7.2
-        hasBlock = 'block' in __builtin__.dir(frame)
-
-        items = []
-        #warn("HAS BLOCK: %s" % hasBlock)
-        if hasBlock:
-            #warn("IS GOOD: %s " % varList)
         try:
             block = frame.block()
             #warn("BLOCK: %s " % block)
@@ -171,6 +164,7 @@ try:
             warn("BLOCK NOT ACCESSIBLE FOR UNKNOWN REASONS")
             return items
 
+        items = []
         shadowed = {}
         while True:
             if block is None:
@@ -238,70 +232,6 @@ try:
                 break
 
             block = block.superblock
-        else:
-            # Assuming gdb 7.0 release or 6.8-symbianelf.
-            filename = createTempFile()
-            #warn("VARLIST: %s " % varList)
-            #warn("FILENAME: %s " % filename)
-            gdb.execute("set logging off")
-#            gdb.execute("set logging redirect off")
-            gdb.execute("set logging file %s" % filename)
-#            gdb.execute("set logging redirect on")
-            gdb.execute("set logging on")
-            try:
-                gdb.execute("info args")
-                # We cannot use "info locals" as at least 6.8-symbianelf
-                # aborts as soon as we hit unreadable memory.
-                # gdb.execute("interpreter mi '-stack-list-locals 0'")
-                # results in &"Recursive internal problem.\n", so we have
-                # the frontend pass us the list of locals.
-
-                # There are two cases, either varList is empty, so we have
-                # to fetch the list here, or it is not empty with the
-                # first entry being a dummy.
-                if len(varList) == 0:
-                    gdb.execute("info locals")
-                else:
-                    varList = varList[1:]
-            except:
-                pass
-            gdb.execute("set logging off")
-#            gdb.execute("set logging redirect off")
-
-            try:
-                temp = open(filename, "r")
-                for line in temp:
-                    if len(line) == 0 or line.startswith(" "):
-                        continue
-                    # The function parameters
-                    pos = line.find(" = ")
-                    if pos < 0:
-                        continue
-                    varList.append(line[0:pos])
-                temp.close()
-            except:
-                pass
-            removeTempFile(filename)
-            #warn("VARLIST: %s " % varList)
-            for name in varList:
-                #warn("NAME %s " % name)
-                item = LocalItem()
-                item.iname = "local." + name
-                item.name = name
-                try:
-                    item.value = frame.read_var(name)  # this is a gdb value
-                except RuntimeError:
-                    pass
-                    #continue
-                except:
-                    # Something breaking the list, like intermediate gdb warnings
-                    # like 'Warning: can't find linker symbol for virtual table for
-                    # `std::less<char const*>' value\n\nwarning:  found
-                    # `myns::QHashData::shared_null' instead [...]
-                    # that break subsequent parsing. Chicken out and take the
-                    # next "usable" line.
-                    continue
-                items.append(item)
 
         return items