patches/gcc/4.3.5/110-trampolinewarn.patch
author Anthony Foiani <anthony.foiani@gmail.com>
Thu Apr 26 19:55:59 2012 -0600 (2012-04-26)
changeset 2939 58974be61289
parent 1461 35b30f8fb307
permissions -rw-r--r--
Allow multi-word "install" command.

Autoconf can determine that the correct install command includes flags,
e.g., "/usr/bin/install -c". When using this as a command, we can't
enclose the value in double-quotes, as that makes some shells use the
whole expression as a filename:

# this is the value returned by autoconf and stored in CT_install
$ ins="/usr/bin/install -c"

# if we call it with quotes, the command is not found
$ "${ins}"
bash: /usr/bin/install -c: No such file or directory

# removing the quotes lets it work as expected
$ ${ins}
/usr/bin/install: missing file operand
Try `/usr/bin/install --help' for more information.

Signed-Off-By: Anthony Foiani <anthony.foiani@gmail.com>
     1 Original patch from: ../4.3.2/110-trampolinewarn.patch
     2 
     3 -= BEGIN original header =-
     4 Original patch from gentoo: gentoo/src/patchsets/gcc/4.3.1/gentoo/00_all_gcc-trampolinewarn.patch
     5 	This trivial patch causes gcc to emit a warning whenever
     6 	it generates a trampoline.  These are otherwise hard to
     7 	locate.  It is rigged to default ON - to have it default
     8 	to OFF remove the text 'Init(1)' from the common.opt
     9 	patch, leaving just 'Common Var(warn_trampolines)'.
    10 	Kevin F. Quinn <kevquinn@gentoo.org> 17 Jan 2006
    11 
    12 -= END original header =-
    13 
    14 diff -durN gcc-4.3.3.orig/gcc/builtins.c gcc-4.3.3/gcc/builtins.c
    15 --- gcc-4.3.3.orig/gcc/builtins.c	2008-08-19 18:37:13.000000000 +0200
    16 +++ gcc-4.3.3/gcc/builtins.c	2009-01-27 22:19:12.000000000 +0100
    17 @@ -5662,6 +5662,9 @@
    18    trampolines_created = 1;
    19    INITIALIZE_TRAMPOLINE (r_tramp, r_func, r_chain);
    20  
    21 +  if (warn_trampolines)
    22 +    warning (OPT_Wtrampolines, "generating trampoline in object (requires executable stack)");
    23 +
    24    return const0_rtx;
    25  }
    26  
    27 diff -durN gcc-4.3.3.orig/gcc/common.opt gcc-4.3.3/gcc/common.opt
    28 --- gcc-4.3.3.orig/gcc/common.opt	2008-01-22 15:11:44.000000000 +0100
    29 +++ gcc-4.3.3/gcc/common.opt	2009-01-27 22:19:12.000000000 +0100
    30 @@ -182,6 +182,10 @@
    31  Common Var(warn_system_headers) Warning
    32  Do not suppress warnings from system headers
    33  
    34 +Wtrampolines
    35 +Common Var(warn_trampolines) Init(1)
    36 +Warn whenever a trampoline is generated
    37 +
    38  Wuninitialized
    39  Common Var(warn_uninitialized) Warning
    40  Warn about uninitialized automatic variables