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| author | Steven Bosscher <stevenb@suse.de> | 2005-01-01 16:15:23 +0000 |
|---|---|---|
| committer | Steven Bosscher <steven@gcc.gnu.org> | 2005-01-01 16:15:23 +0000 |
| commit | 43e05e45bcd3092ef7fb02e537ca7645607dbede (patch) | |
| tree | c6d40e9cbaa9fa337df7a271539a709395f1c913 /gcc/c-decl.c | |
| parent | 8e1d2e8278cc2bed80ad1a1564cee131996b6129 (diff) | |
| download | gcc-43e05e45bcd3092ef7fb02e537ca7645607dbede.zip gcc-43e05e45bcd3092ef7fb02e537ca7645607dbede.tar.gz gcc-43e05e45bcd3092ef7fb02e537ca7645607dbede.tar.bz2 | |
re PR middle-end/17544 (incorrect -Wunreachable-code warning for mains with a return statement)
* emit-rtl.c (add_insn_before): Fix comment typo.
PR middle-end/17544
* c-decl.c (finish_function): If compiling C99, annotate the
compiler generated return with the current file name and line 0.
* tree-cfg.c (remove_useless_stmts_warn_notreached): Only warn if
the source line is greater than 0.
(remove_bb): Likewise.
cp/
PR middle-end/17544
* decl.c (finish_function): Fix comment. Annotate the compiler
generated return with the current file name and line 0.
testsuite/
* gcc.dg/20041231-1.C: New test.
* g++.dg/warn/Wunreachable-code-1.C: New test.
From-SVN: r92784
Diffstat (limited to 'gcc/c-decl.c')
| -rw-r--r-- | gcc/c-decl.c | 11 |
1 files changed, 9 insertions, 2 deletions
diff --git a/gcc/c-decl.c b/gcc/c-decl.c index 2ff015e..a0053ed 100644 --- a/gcc/c-decl.c +++ b/gcc/c-decl.c @@ -1,6 +1,6 @@ /* Process declarations and variables for C compiler. Copyright (C) 1988, 1992, 1993, 1994, 1995, 1996, 1997, 1998, 1999, 2000, - 2001, 2002, 2003, 2004 Free Software Foundation, Inc. + 2001, 2002, 2003, 2004, 2005 Free Software Foundation, Inc. This file is part of GCC. @@ -29,6 +29,7 @@ Software Foundation, 59 Temple Place - Suite 330, Boston, MA #include "config.h" #include "system.h" #include "coretypes.h" +#include "input.h" #include "tm.h" #include "intl.h" #include "tree.h" @@ -6287,7 +6288,13 @@ finish_function (void) else { if (flag_isoc99) - c_finish_return (integer_zero_node); + { + tree stmt = c_finish_return (integer_zero_node); + /* Hack. We don't want the middle-end to warn that this + return is unreachable, so put the statement on the + special line 0. */ + annotate_with_file_line (stmt, input_filename, 0); + } } } |