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| author | Doug Evans <dje@google.com> | 2012-06-07 17:30:12 +0000 |
|---|---|---|
| committer | Doug Evans <dje@google.com> | 2012-06-07 17:30:12 +0000 |
| commit | 034e5797f031bded01cfdf48546300ec862bc36b (patch) | |
| tree | be5093432602819d24659894373eecc555298243 | |
| parent | fef632e18b6b6ff62fe93803650caba68fe9f33a (diff) | |
| download | gdb-034e5797f031bded01cfdf48546300ec862bc36b.zip gdb-034e5797f031bded01cfdf48546300ec862bc36b.tar.gz gdb-034e5797f031bded01cfdf48546300ec862bc36b.tar.bz2 | |
* dwarf2read.c (dwarf2_cu): Add comment.
| -rw-r--r-- | gdb/ChangeLog | 4 | ||||
| -rw-r--r-- | gdb/dwarf2read.c | 10 |
2 files changed, 13 insertions, 1 deletions
diff --git a/gdb/ChangeLog b/gdb/ChangeLog index 46188d1..6e5d0872 100644 --- a/gdb/ChangeLog +++ b/gdb/ChangeLog @@ -1,3 +1,7 @@ +2012-06-07 Doug Evans <dje@google.com> + + * dwarf2read.c (dwarf2_cu): Add comment. + 2012-06-06 Maciej W. Rozycki <macro@codesourcery.com> * mips-tdep.c (mips_pseudo_register_type): Remove tdep local diff --git a/gdb/dwarf2read.c b/gdb/dwarf2read.c index 23779ac..589361e 100644 --- a/gdb/dwarf2read.c +++ b/gdb/dwarf2read.c @@ -412,7 +412,15 @@ struct dwarf2_cu /* To be copied to symtab->call_site_htab. */ htab_t call_site_htab; - /* Non-NULL if this CU came from a DWO file. */ + /* Non-NULL if this CU came from a DWO file. + There is an invariant here that is important to remember: + Except for attributes copied from the top level DIE in the "main" + (or "stub") file in preparation for reading the DWO file + (e.g., DW_AT_GNU_addr_base), we KISS: there is only *one* CU. + Either there isn't a DWO file (in which case this is NULL and the point + is moot), or there is and either we're not going to read it (in which + case this is NULL) or there is and we are reading it (in which case this + is non-NULL). */ struct dwo_unit *dwo_unit; /* The DW_AT_addr_base attribute if present, zero otherwise |