patches/gcc/4.4.4/110-trampolinewarn.patch
author Anthony Foiani <anthony.foiani@gmail.com>
Thu Apr 26 19:55:59 2012 -0600 (2012-04-26)
changeset 2939 58974be61289
parent 1948 d341be24dc68
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>
yann@1948
     1
diff -durN gcc-4.4.4.orig/gcc/builtins.c gcc-4.4.4/gcc/builtins.c
yann@1948
     2
--- gcc-4.4.4.orig/gcc/builtins.c	2010-03-22 16:00:20.000000000 +0100
yann@1948
     3
+++ gcc-4.4.4/gcc/builtins.c	2010-05-16 19:10:34.000000000 +0200
yann@1948
     4
@@ -5783,6 +5783,9 @@
yann@1948
     5
   trampolines_created = 1;
yann@1948
     6
   INITIALIZE_TRAMPOLINE (r_tramp, r_func, r_chain);
yann@1948
     7
 
yann@1948
     8
+  if (warn_trampolines)
yann@1948
     9
+    warning (OPT_Wtrampolines, "generating trampoline in object (requires executable stack)");
yann@1948
    10
+
yann@1948
    11
   return const0_rtx;
yann@1948
    12
 }
yann@1948
    13
 
yann@1948
    14
diff -durN gcc-4.4.4.orig/gcc/common.opt gcc-4.4.4/gcc/common.opt
yann@1948
    15
--- gcc-4.4.4.orig/gcc/common.opt	2009-03-28 18:28:45.000000000 +0100
yann@1948
    16
+++ gcc-4.4.4/gcc/common.opt	2010-05-16 19:10:34.000000000 +0200
yann@1948
    17
@@ -197,6 +197,10 @@
yann@1948
    18
 Common Var(warn_type_limits) Init(-1) Warning
yann@1948
    19
 Warn if a comparison is always true or always false due to the limited range of the data type
yann@1948
    20
 
yann@1948
    21
+Wtrampolines
yann@1948
    22
+Common Var(warn_trampolines) Init(1)
yann@1948
    23
+Warn whenever a trampoline is generated
yann@1948
    24
+
yann@1948
    25
 Wuninitialized
yann@1948
    26
 Common Var(warn_uninitialized) Warning
yann@1948
    27
 Warn about uninitialized automatic variables