(reposted) Fix -fprofile-use warnings/errors.

[Phil Muldoon <pmuldoon at redhat dot com>]

Phil Muldoon <pmuldoon@redhat.com> writes:

> Phil Muldoon <pmuldoon@redhat.com> writes:
>
>> This patch corrects (and in some cases, appeases) compiler warnings
>> generated through the use of -fprofile-use.  We've had a variant patch
>> for sometime in the Fedora GDB.  This updates HEAD.
>
> And just as soon as I post the patch I realize some of the profile data
> was stale.  Sorry for the noise, but I will post another (larger) patch
> very shortly.

Here is an updated patch


2010-11-19  Phil Muldoon  <pmuldoon@redhat.com>

	* cris-tdep.c (cris_software_single_step): Initialize variables
          to appease fprofile-use warnings.
        * macroexp.c (expand): Ditto.
        * remote-m32r-sdi.c: Ditto.
        * xcoffread.c (read_xcoff_symtab): Ditto.
        * gcore.c (objfile_find_memory_regions): Ditto.
        * infcall.c (find_function_addr): Ditto.
        * printcmd.c (sym_info): Ditto.
        * symfile.c (overlay_invalidate_all, find_pc_overlay,
          find_pc_mapped_section, list_overlays_command,
          map_overlay_command, unmap_overlay_command): Ditto.
        * xcoffread.c (read_xcoff_symtab): Ditto.

gdbserver:

2010-11-19  Phil Muldoon  <pmuldoon@redhat.com>

        * linux-x86-low.c (ATTR_NOINLINE_NOCLONE): Define.
        (add_insns): Use ATTR_NOLINE_NOCLONE.

--
diff --git a/gdb/cris-tdep.c b/gdb/cris-tdep.c
index 52a89de..7045cb9 100644
--- a/gdb/cris-tdep.c
+++ b/gdb/cris-tdep.c
@@ -2134,10 +2134,15 @@ cris_software_single_step (struct frame_info *frame)
   struct gdbarch *gdbarch = get_frame_arch (frame);
   struct address_space *aspace = get_frame_address_space (frame);
   inst_env_type inst_env;
+  int status;
+
+  /* GCC -fprofile-use warning.  */
+  memset (&inst_env, 0, sizeof (inst_env));
 
   /* Analyse the present instruction environment and insert 
      breakpoints.  */
-  int status = find_step_target (frame, &inst_env);
+  status = find_step_target (frame, &inst_env);
+
   if (status == -1)
     {
       /* Could not find a target.  Things are likely to go downhill 
diff --git a/gdb/gcore.c b/gdb/gcore.c
index 9fc0a7f..e45a8df 100644
--- a/gdb/gcore.c
+++ b/gdb/gcore.c
@@ -465,7 +465,7 @@ objfile_find_memory_regions (find_memory_region_ftype func, void *obfd)
 {
   /* Use objfile data to create memory sections.  */
   struct objfile *objfile;
-  struct obj_section *objsec;
+  struct obj_section *objsec = NULL; /* GCC -fprofile-use warning.  */
   bfd_vma temp_bottom, temp_top;
 
   /* Call callback function for each objfile section.  */
diff --git a/gdb/gdbserver/linux-x86-low.c b/gdb/gdbserver/linux-x86-low.c
index 49e9e55..bfd4698 100644
--- a/gdb/gdbserver/linux-x86-low.c
+++ b/gdb/gdbserver/linux-x86-low.c
@@ -89,6 +89,12 @@ static const char *xmltarget_amd64_linux_no_xml = "@<target>\
 #define ARCH_GET_GS 0x1004
 #endif
 
+#if defined(__GNUC__)
+#  define ATTR_NOINLINE_NOCLONE __attribute__((noinline, noclone))
+#else
+#  define ATTR_NOINLINE_NOCLONE
+#endif
+
 /* Per-process arch-specific data we want to keep.  */
 
 struct arch_process_info
@@ -1520,7 +1526,7 @@ x86_install_fast_tracepoint_jump_pad (CORE_ADDR tpoint, CORE_ADDR tpaddr,
 						adjusted_insn_addr_end);
 }
 
-static void
+static void ATTR_NOINLINE_NOCLONE
 add_insns (unsigned char *start, int len)
 {
   CORE_ADDR buildaddr = current_insn_ptr;
diff --git a/gdb/infcall.c b/gdb/infcall.c
index 7f60e56..0f63baf 100644
--- a/gdb/infcall.c
+++ b/gdb/infcall.c
@@ -235,7 +235,7 @@ find_function_addr (struct value *function, struct type **retval_type)
   struct gdbarch *gdbarch = get_type_arch (ftype);
   enum type_code code = TYPE_CODE (ftype);
   struct type *value_type = NULL;
-  CORE_ADDR funaddr;
+  CORE_ADDR funaddr = 0;  /* GCC -fprofile-use warning.  */
 
   /* If it's a member function, just look at the function
      part of it.  */
diff --git a/gdb/macroexp.c b/gdb/macroexp.c
index 86689c3..972e953 100644
--- a/gdb/macroexp.c
+++ b/gdb/macroexp.c
@@ -1184,6 +1184,9 @@ expand (const char *id,
       struct macro_buffer va_arg_name;
       int is_varargs = 0;
 
+      /* GCC false -fprofile-use warning.  */
+      memset (&va_arg_name, 0, sizeof (va_arg_name));
+
       if (def->argc >= 1)
 	{
 	  if (strcmp (def->argv[def->argc - 1], "...") == 0)
diff --git a/gdb/printcmd.c b/gdb/printcmd.c
index 5586767..a518958 100644
--- a/gdb/printcmd.c
+++ b/gdb/printcmd.c
@@ -1089,7 +1089,7 @@ sym_info (char *arg, int from_tty)
 {
   struct minimal_symbol *msymbol;
   struct objfile *objfile;
-  struct obj_section *osect;
+  struct obj_section *osect = NULL;   /* GCC -fprofile-use warning.  */
   CORE_ADDR addr, sect_addr;
   int matches = 0;
   unsigned int offset;
diff --git a/gdb/remote-m32r-sdi.c b/gdb/remote-m32r-sdi.c
index 2b67927..bd06950 100644
--- a/gdb/remote-m32r-sdi.c
+++ b/gdb/remote-m32r-sdi.c
@@ -273,7 +273,7 @@ send_three_arg_cmd (unsigned char cmd, unsigned long arg1, unsigned long arg2,
 static unsigned char
 recv_char_data (void)
 {
-  unsigned char val;
+  unsigned char val = 0;  /* GCC -fprofile-use warning.  */
 
   recv_data (&val, 1);
   return val;
diff --git a/gdb/symfile.c b/gdb/symfile.c
index f1c2941..098962b 100644
--- a/gdb/symfile.c
+++ b/gdb/symfile.c
@@ -2872,7 +2872,7 @@ static void
 overlay_invalidate_all (void)
 {
   struct objfile *objfile;
-  struct obj_section *sect;
+  struct obj_section *sect = NULL; /* GCC -fprofile-use warning.  */
 
   ALL_OBJSECTIONS (objfile, sect)
     if (section_is_overlay (sect))
@@ -3050,7 +3050,8 @@ struct obj_section *
 find_pc_overlay (CORE_ADDR pc)
 {
   struct objfile *objfile;
-  struct obj_section *osect, *best_match = NULL;
+  /* GCC -fprofile-use warning.  Set to NULL*/
+  struct obj_section *osect = NULL, *best_match = NULL;
 
   if (overlay_debugging)
     ALL_OBJSECTIONS (objfile, osect)
@@ -3077,7 +3078,7 @@ struct obj_section *
 find_pc_mapped_section (CORE_ADDR pc)
 {
   struct objfile *objfile;
-  struct obj_section *osect;
+  struct obj_section *osect = NULL;  /* GCC -fprofile-use warning.  */
 
   if (overlay_debugging)
     ALL_OBJSECTIONS (objfile, osect)
@@ -3095,7 +3096,7 @@ list_overlays_command (char *args, int from_tty)
 {
   int nmapped = 0;
   struct objfile *objfile;
-  struct obj_section *osect;
+  struct obj_section *osect = NULL;   /* GCC -fprofile-use warning.  */
 
   if (overlay_debugging)
     ALL_OBJSECTIONS (objfile, osect)
@@ -3134,7 +3135,9 @@ void
 map_overlay_command (char *args, int from_tty)
 {
   struct objfile *objfile, *objfile2;
-  struct obj_section *sec, *sec2;
+  /* GCC -fprofile-use warning.  Set to NULL*/
+  struct obj_section *sec = NULL, *sec2 = NULL;
+
 
   if (!overlay_debugging)
     error (_("\
@@ -3179,7 +3182,7 @@ void
 unmap_overlay_command (char *args, int from_tty)
 {
   struct objfile *objfile;
-  struct obj_section *sec;
+  struct obj_section *sec = NULL; /* GCC-fprofile-use warning.  */
 
   if (!overlay_debugging)
     error (_("\
diff --git a/gdb/xcoffread.c b/gdb/xcoffread.c
index 902d48f..196fec1 100644
--- a/gdb/xcoffread.c
+++ b/gdb/xcoffread.c
@@ -961,6 +961,9 @@ read_xcoff_symtab (struct partial_symtab *pst)
   CORE_ADDR last_csect_val;
   int last_csect_sec;
 
+  /* GCC -fprofile-use warning.  */
+  memset (&fcn_aux_saved, 0, sizeof (fcn_aux_saved));
+
   this_symtab_psymtab = pst;
 
   /* Get the appropriate COFF "constants" related to the file we're