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ggc-page.c (ggc_pch_write_object): Initialize emptyBytes.

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./:	* ggc-page.c (ggc_pch_write_object): Initialize emptyBytes.
	* sdbout.c (sdb_debug_hooks): Initialize non-SDB_DEBUGGING_INFO
	version.

	* c-decl.c (finish_decl): If -Wc++-compat, warn about
	uninitialized const.
testsuite/:
	* gcc.dg/Wcxx-compat-17.c: New testcase.

From-SVN: r148710
This commit is contained in:
Ian Lance Taylor 2009-06-19 15:32:43 +00:00 • committed by Ian Lance Taylor
parent dc491a250a
commit 642324bb16
6 changed files with 75 additions and 3 deletions
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9
gcc/ChangeLog
View file

@ -1,3 +1,12 @@
2009-06-19 Ian Lance Taylor <iant@google.com>
* ggc-page.c (ggc_pch_write_object): Initialize emptyBytes.
* sdbout.c (sdb_debug_hooks): Initialize non-SDB_DEBUGGING_INFO
version.
* c-decl.c (finish_decl): If -Wc++-compat, warn about
uninitialized const.
2009-06-19 Ian Lance Taylor <iant@google.com>
* dse.c (struct store_info): Rename bitmap field to bmap. Change

8
gcc/c-decl.c
View file

@ -4352,6 +4352,14 @@ finish_decl (tree decl, location_t init_loc, tree init,
push_cleanup (decl, cleanup, false);
}
}
if (warn_cxx_compat
&& TREE_CODE (decl) == VAR_DECL
&& TREE_READONLY (decl)
&& !DECL_EXTERNAL (decl)
&& DECL_INITIAL (decl) == NULL_TREE)
warning_at (DECL_SOURCE_LOCATION (decl), OPT_Wc___compat,
"uninitialized const %qD is invalid in C++", decl);
}
/* Given a parsed parameter declaration, decode it into a PARM_DECL. */

2
gcc/ggc-page.c
View file

@ -2165,7 +2165,7 @@ ggc_pch_write_object (struct ggc_pch_data *d ATTRIBUTE_UNUSED,
size_t size, bool is_string ATTRIBUTE_UNUSED)
{
unsigned order;
static const char emptyBytes[256];
static const char emptyBytes[256] = { 0 };
if (size < NUM_SIZE_LOOKUP)
order = size_lookup[size];

34
gcc/sdbout.c
View file

@ -1,6 +1,6 @@
/* Output sdb-format symbol table information from GNU compiler.
Copyright (C) 1988, 1992, 1993, 1994, 1995, 1996, 1997, 1998, 1999,
2000, 2001, 2002, 2003, 2004, 2005, 2007, 2008
2000, 2001, 2002, 2003, 2004, 2005, 2007, 2008, 2009
Free Software Foundation, Inc.
This file is part of GCC.
@ -1698,7 +1698,37 @@ sdbout_init (const char *input_file_name ATTRIBUTE_UNUSED)
#else /* SDB_DEBUGGING_INFO */
/* This should never be used, but its address is needed for comparisons. */
const struct gcc_debug_hooks sdb_debug_hooks;
const struct gcc_debug_hooks sdb_debug_hooks =
{
0, /* init */
0, /* finish */
0, /* define */
0, /* undef */
0, /* start_source_file */
0, /* end_source_file */
0, /* begin_block */
0, /* end_block */
0, /* ignore_block */
0, /* source_line */
0, /* begin_prologue */
0, /* end_prologue */
0, /* end_epilogue */
0, /* begin_function */
0, /* end_function */
0, /* function_decl */
0, /* global_decl */
0, /* type_decl */
0, /* imported_module_or_decl */
0, /* deferred_inline_function */
0, /* outlining_inline_function */
0, /* label */
0, /* handle_pch */
0, /* var_location */
0, /* switch_text_section */
0, /* set_name */
0 /* start_end_main_source_file */
};
#endif /* SDB_DEBUGGING_INFO */

4
gcc/testsuite/ChangeLog
View file

@ -1,3 +1,7 @@
2009-06-19 Ian Lance Taylor <iant@google.com>
* gcc.dg/Wcxx-compat-17.c: New testcase.
2009-06-19 Ian Lance Taylor <iant@google.com>
* gcc.dg/Wcxx-compat-15.c: New testcase.

21
gcc/testsuite/gcc.dg/Wcxx-compat-17.c Normal file
View file

@ -0,0 +1,21 @@
/* { dg-do compile } */
/* { dg-options "-Wc++-compat" } */
const int v1; /* { dg-warning "invalid in C\[+\]\[+\]" } */
const char * const v2; /* { dg-warning "invalid in C\[+\]\[+\]" } */
struct s { int f1; int f2; };
const struct s v3; /* { dg-warning "invalid in C\[+\]\[+\]" } */
const int v4 = 1;
const char * const v5 = 0;
const struct s v6 = { 0, 0 };
const struct s v7 = { 0 };
void
f()
{
const int v11; /* { dg-warning "invalid in C\[+\]\[+\]" } */
const char * const v12; /* { dg-warning "invalid in C\[+\]\[+\]" } */
const struct s v13; /* { dg-warning "invalid in C\[+\]\[+\]" } */
const int v14 = 1;
const char * const v15 = 0;
const struct s v16 = { 0, 0 };
const struct s v17 = { 0 };
}