Fixed an issue where a lexical block or inlined function might have bad debug

information generated for it. Say we have a concrete function "foo" which
has inlined function "a" which calls another inlined function "b":

    foo
1   {
2       {
            a ()
3           {
                b ()
4               {
                
                }
            }
        }
    }
    
Sometimes we see the compiler generate an address range in the DWARF for "foo"
(block 1 above) as say [0x1000-0x1100). Then the range for "a" is something
like [0x1050-0x1060) (note that it is correctly scoped within the "foo" 
address range). And then we get "b" which is a child of "a", yet the debug
info says it has a range of [0x1060-0x1080) (not contained within "a"). We now
detect this issue when making our blocks and add an extra range to "a".

Also added a new "lldb" logging category named "symbol" where we can find out
about symbol file errors and warnings.

llvm-svn: 140822

1 files changed, 3 insertions, 0 deletions

diff --git a/lldb/source/lldb-log.cpp b/lldb/source/lldb-log.cpp
index 737cdc4edfa..6dc32f0d378 100644
--- a/lldb/source/lldb-log.cpp
+++ b/lldb/source/lldb-log.cpp
@@ -135,6 +135,7 @@ lldb_private::DisableLog (Args &args, Stream *feedback_strm)
                 else if (0 == ::strncasecmp(arg, "host", 4))    flag_bits &= ~LIBLLDB_LOG_HOST;
                 else if (0 == ::strncasecmp(arg, "unwind", 6))  flag_bits &= ~LIBLLDB_LOG_UNWIND;
                 else if (0 == ::strncasecmp(arg, "types", 5))   flag_bits &= ~LIBLLDB_LOG_TYPES;
+                else if (0 == ::strncasecmp(arg, "symbol", 6))  flag_bits &= ~LIBLLDB_LOG_SYMBOLS;
                 else
                 {
                     feedback_strm->Printf ("error:  unrecognized log category '%s'\n", arg);
@@ -202,6 +203,7 @@ lldb_private::EnableLog (StreamSP &log_stream_sp, uint32_t log_options, Args &ar
             else if (0 == ::strncasecmp(arg, "host", 4))    flag_bits |= LIBLLDB_LOG_HOST;
             else if (0 == ::strncasecmp(arg, "unwind", 6))  flag_bits |= LIBLLDB_LOG_UNWIND;
             else if (0 == ::strncasecmp(arg, "types", 5))   flag_bits |= LIBLLDB_LOG_TYPES;
+            else if (0 == ::strncasecmp(arg, "symbol", 6))  flag_bits |= LIBLLDB_LOG_SYMBOLS;
             else
             {
                 feedback_strm->Printf("error: unrecognized log category '%s'\n", arg);
@@ -241,6 +243,7 @@ lldb_private::ListLogCategories (Stream *strm)
         "  step - log step related activities\n"
         "  unwind - log stack unwind activities\n"
         "  verbose - enable verbose logging\n"
+        "  symbol - log symbol related issues and warnings\n"
         "  watch - log watchpoint related activities\n"
         "  types - log type system related activities\n");
 }