Don't create _Complex type name if there is no target type name

This causes gdb to crash in strlen.

Happens if init_complex_type is called for a type created by
dbx_init_float_type in stabsread.c.

gdb/ChangeLog:

2020-10-22  Hannes Domani  <ssbssa@yahoo.de>

	* gdbtypes.c (init_complex_type): Check target type name.

diff --git a/gdb/ChangeLog b/gdb/ChangeLog
index 4358b449856ebb6c2992040ccc24115ef8724564..4baafd41094a5084e540094c833220ad90426c4b 100644 (file)
--- a/gdb/ChangeLog
+++ b/gdb/ChangeLog
@@ -1,3 +1,7 @@
+2020-10-22  Hannes Domani  <ssbssa@yahoo.de>
+
+       * gdbtypes.c (init_complex_type): Check target type name.
+
 2020-10-22  Simon Marchi  <simon.marchi@polymtl.ca>
 
        PR gdb/26693

diff --git a/gdb/gdbtypes.c b/gdb/gdbtypes.c
index b7c8ec8e6432bccccbe27f8c24f885e5a349e0a6..a40ae5f30eba8b277bb88c73928726e2be25feab 100644 (file)
--- a/gdb/gdbtypes.c
+++ b/gdb/gdbtypes.c
@@ -3283,7 +3283,7 @@ init_complex_type (const char *name, struct type *target_type)
 
   if (TYPE_MAIN_TYPE (target_type)->flds_bnds.complex_type == nullptr)
     {
-      if (name == nullptr)
+      if (name == nullptr && target_type->name () != nullptr)
        {
          char *new_name
            = (char *) TYPE_ALLOC (target_type,