Remove buildsym_init

Now that buildsym_init does nothing, it can be removed.

gdb/ChangeLog
2018-07-20  Tom Tromey  <tom@tromey.com>

	* coffread.c (coff_symtab_read): Update.
	* xcoffread.c (xcoff_psymtab_to_symtab_1): Update.
	(xcoff_new_init): Update.
	* mipsread.c (mipscoff_new_init): Update.
	* mdebugread.c (mdebug_build_psymtabs): Update.
	* elfread.c (elf_new_init): Update.
	* dwarf2read.c (process_full_comp_unit, process_full_type_unit):
	Update.
	* dbxread.c (dbx_new_init, dbx_psymtab_to_symtab_1)
	(coffstab_build_psymtabs, elfstab_build_psymtabs)
	(stabsect_build_psymtabs): Update.
	* buildsym.h (buildsym_init): Don't declare.
	* buildsym.c: Update comment.
	(prepare_for_building): Remove.
	(start_symtab, restart_symtab): Update.
	(reset_symtab_globals): Update comment.
	(buildsym_init): Remove.

10 files changed, 27 insertions, 50 deletions

diff --git a/gdb/ChangeLog b/gdb/ChangeLog
index 2176298..308b067 100644
--- a/gdb/ChangeLog
+++ b/gdb/ChangeLog
@@ -1,5 +1,25 @@
 2018-07-20  Tom Tromey  <tom@tromey.com>
 
+	* coffread.c (coff_symtab_read): Update.
+	* xcoffread.c (xcoff_psymtab_to_symtab_1): Update.
+	(xcoff_new_init): Update.
+	* mipsread.c (mipscoff_new_init): Update.
+	* mdebugread.c (mdebug_build_psymtabs): Update.
+	* elfread.c (elf_new_init): Update.
+	* dwarf2read.c (process_full_comp_unit, process_full_type_unit):
+	Update.
+	* dbxread.c (dbx_new_init, dbx_psymtab_to_symtab_1)
+	(coffstab_build_psymtabs, elfstab_build_psymtabs)
+	(stabsect_build_psymtabs): Update.
+	* buildsym.h (buildsym_init): Don't declare.
+	* buildsym.c: Update comment.
+	(prepare_for_building): Remove.
+	(start_symtab, restart_symtab): Update.
+	(reset_symtab_globals): Update comment.
+	(buildsym_init): Remove.
+
+2018-07-20  Tom Tromey  <tom@tromey.com>
+
 	* xcoffread.c (read_xcoff_symtab, process_xcoff_symbol): Update.
 	* stabsread.c (patch_block_stabs, define_symbol, read_type)
 	(read_enum_type, common_block_start, common_block_end)
diff --git a/gdb/buildsym.c b/gdb/buildsym.c
index 5503132..d7f8f48 100644
--- a/gdb/buildsym.c
+++ b/gdb/buildsym.c
@@ -25,7 +25,6 @@
 
    The basic way this module is used is as follows:
 
-   buildsym_init ();
    scoped_free_pendings free_pending;
    cust = start_symtab (...);
    ... read debug info ...
@@ -40,7 +39,6 @@
 
    Reading DWARF Type Units is another variation:
 
-   buildsym_init ();
    scoped_free_pendings free_pending;
    cust = start_symtab (...);
    ... read debug info ...
@@ -49,7 +47,6 @@
    And then reading subsequent Type Units within the containing "Comp Unit"
    will use a second flow:
 
-   buildsym_init ();
    scoped_free_pendings free_pending;
    cust = restart_symtab (...);
    ... read debug info ...
@@ -57,7 +54,6 @@
 
    dbxread.c and xcoffread.c use another variation:
 
-   buildsym_init ();
    scoped_free_pendings free_pending;
    cust = start_symtab (...);
    ... read debug info ...
@@ -985,19 +981,6 @@ get_macro_table (void)
   return buildsym_compunit->get_macro_table ();
 }
 
-/* Init state to prepare for building a symtab.
-   Note: This can't be done in buildsym_init because dbxread.c and xcoffread.c
-   can call start_symtab+end_symtab multiple times after one call to
-   buildsym_init.  */
-
-static void
-prepare_for_building ()
-{
-  /* These should have been reset either by successful completion of building
-     a symtab, or by the scoped_free_pendings destructor.  */
-  gdb_assert (buildsym_compunit == nullptr);
-}
-
 /* Start a new symtab for a new source file in OBJFILE.  Called, for example,
    when a stabs symbol of type N_SO is seen, or when a DWARF
    TAG_compile_unit DIE is seen.  It indicates the start of data for
@@ -1014,7 +997,9 @@ struct compunit_symtab *
 start_symtab (struct objfile *objfile, const char *name, const char *comp_dir,
 	      CORE_ADDR start_addr, enum language language)
 {
-  prepare_for_building ();
+  /* These should have been reset either by successful completion of building
+     a symtab, or by the scoped_free_pendings destructor.  */
+  gdb_assert (buildsym_compunit == nullptr);
 
   buildsym_compunit = new struct buildsym_compunit (objfile, name, comp_dir,
 						    language, start_addr);
@@ -1051,7 +1036,9 @@ void
 restart_symtab (struct compunit_symtab *cust,
 		const char *name, CORE_ADDR start_addr)
 {
-  prepare_for_building ();
+  /* These should have been reset either by successful completion of building
+     a symtab, or by the scoped_free_pendings destructor.  */
+  gdb_assert (buildsym_compunit == nullptr);
 
   buildsym_compunit
     = new struct buildsym_compunit (COMPUNIT_OBJFILE (cust),
@@ -1135,11 +1122,7 @@ watch_main_source_file_lossage (void)
     }
 }
 
-/* Reset state after a successful building of a symtab.
-   This exists because dbxread.c and xcoffread.c can call
-   start_symtab+end_symtab multiple times after one call to buildsym_init,
-   and before the scoped_free_pendings destructor is called.
-   We keep the free_pendings list around for dbx/xcoff sake.  */
+/* Reset state after a successful building of a symtab.  */
 
 static void
 reset_symtab_globals (void)
@@ -1748,14 +1731,3 @@ get_global_symbols ()
   gdb_assert (buildsym_compunit != nullptr);
   return &buildsym_compunit->m_global_symbols;
 }
-
-
-
-/* Initialize anything that needs initializing when starting to read a
-   fresh piece of a symbol file, e.g. reading in the stuff
-   corresponding to a psymtab.  */
-
-void
-buildsym_init ()
-{
-}
diff --git a/gdb/buildsym.h b/gdb/buildsym.h
index bb4cef0..9f04314 100644
--- a/gdb/buildsym.h
+++ b/gdb/buildsym.h
@@ -171,8 +171,6 @@ extern struct compunit_symtab *end_expandable_symtab (CORE_ADDR end_addr,
 
 extern void augment_type_symtab (void);
 
-extern void buildsym_init ();
-
 extern struct context_stack *push_context (int desc, CORE_ADDR valu);
 
 extern struct context_stack pop_context ();
diff --git a/gdb/coffread.c b/gdb/coffread.c
index 9649db4..23dee4c 100644
--- a/gdb/coffread.c
+++ b/gdb/coffread.c
@@ -804,7 +804,6 @@ coff_symtab_read (minimal_symbol_reader &reader,
   CORE_ADDR tmpaddr;
   struct minimal_symbol *msym;
 
-  buildsym_init ();
   scoped_free_pendings free_pending;
 
   /* Work around a stdio bug in SunOS4.1.1 (this makes me nervous....
diff --git a/gdb/dbxread.c b/gdb/dbxread.c
index df03df4..db49243 100644
--- a/gdb/dbxread.c
+++ b/gdb/dbxread.c
@@ -567,7 +567,6 @@ static void
 dbx_new_init (struct objfile *ignore)
 {
   stabsread_new_init ();
-  buildsym_init ();
   init_header_files ();
 }
 
@@ -2164,7 +2163,6 @@ dbx_psymtab_to_symtab_1 (struct objfile *objfile, struct partial_symtab *pst)
     {
       /* Init stuff necessary for reading in symbols */
       stabsread_init ();
-      buildsym_init ();
       scoped_free_pendings free_pending;
       file_string_table_offset = FILE_STRING_OFFSET (pst);
       symbol_size = SYMBOL_SIZE (pst);
@@ -3037,7 +3035,6 @@ coffstab_build_psymtabs (struct objfile *objfile,
     perror_with_name (name);
 
   stabsread_new_init ();
-  buildsym_init ();
   free_header_files ();
   init_header_files ();
 
@@ -3125,7 +3122,6 @@ elfstab_build_psymtabs (struct objfile *objfile, asection *stabsect,
     perror_with_name (name);
 
   stabsread_new_init ();
-  buildsym_init ();
   free_header_files ();
   init_header_files ();
 
@@ -3227,7 +3223,6 @@ stabsect_build_psymtabs (struct objfile *objfile, char *stab_name,
     perror_with_name (name);
 
   stabsread_new_init ();
-  buildsym_init ();
   free_header_files ();
   init_header_files ();
 
diff --git a/gdb/dwarf2read.c b/gdb/dwarf2read.c
index 805eaf2..985a233 100644
--- a/gdb/dwarf2read.c
+++ b/gdb/dwarf2read.c
@@ -10241,7 +10241,6 @@ process_full_comp_unit (struct dwarf2_per_cu_data *per_cu,
 
   baseaddr = ANOFFSET (objfile->section_offsets, SECT_OFF_TEXT (objfile));
 
-  buildsym_init ();
   scoped_free_pendings free_pending;
 
   /* Clear the list here in case something was left over.  */
@@ -10344,7 +10343,6 @@ process_full_type_unit (struct dwarf2_per_cu_data *per_cu,
   gdb_assert (per_cu->is_debug_types);
   sig_type = (struct signatured_type *) per_cu;
 
-  buildsym_init ();
   scoped_free_pendings free_pending;
 
   /* Clear the list here in case something was left over.  */
diff --git a/gdb/elfread.c b/gdb/elfread.c
index a5c4cdf..10daef0 100644
--- a/gdb/elfread.c
+++ b/gdb/elfread.c
@@ -1325,7 +1325,6 @@ static void
 elf_new_init (struct objfile *ignore)
 {
   stabsread_new_init ();
-  buildsym_init ();
 }
 
 /* Perform any local cleanups required when we are done with a particular
diff --git a/gdb/mdebugread.c b/gdb/mdebugread.c
index 0bc7fa6..240498a 100644
--- a/gdb/mdebugread.c
+++ b/gdb/mdebugread.c
@@ -344,7 +344,6 @@ mdebug_build_psymtabs (minimal_symbol_reader &reader,
   debug_info = info;
 
   stabsread_new_init ();
-  buildsym_init ();
   free_header_files ();
   init_header_files ();
         
diff --git a/gdb/mipsread.c b/gdb/mipsread.c
index 3bdc507..52130da 100644
--- a/gdb/mipsread.c
+++ b/gdb/mipsread.c
@@ -54,7 +54,6 @@ static void
 mipscoff_new_init (struct objfile *ignore)
 {
   stabsread_new_init ();
-  buildsym_init ();
 }
 
 /* Initialize to read a symbol file (nothing to do).  */
diff --git a/gdb/xcoffread.c b/gdb/xcoffread.c
index 9268a3f..ba377d4 100644
--- a/gdb/xcoffread.c
+++ b/gdb/xcoffread.c
@@ -1870,7 +1870,6 @@ xcoff_psymtab_to_symtab_1 (struct objfile *objfile, struct partial_symtab *pst)
     {
       /* Init stuff necessary for reading in symbols.  */
       stabsread_init ();
-      buildsym_init ();
 
       scoped_free_pendings free_pending;
       read_xcoff_symtab (objfile, pst);
@@ -1922,7 +1921,6 @@ static void
 xcoff_new_init (struct objfile *objfile)
 {
   stabsread_new_init ();
-  buildsym_init ();
 }
 
 /* Do initialization in preparation for reading symbols from OBJFILE.