patches/gcc/4.4.5/110-trampolinewarn.patch
author Anthony Foiani <anthony.foiani@gmail.com>
Thu Apr 26 19:55:59 2012 -0600 (2012-04-26)
changeset 2939 58974be61289
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>
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diff -durN gcc-4.4.5.orig/gcc/builtins.c gcc-4.4.5/gcc/builtins.c
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--- gcc-4.4.5.orig/gcc/builtins.c	2010-03-22 16:00:20.000000000 +0100
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+++ gcc-4.4.5/gcc/builtins.c	2010-10-09 22:57:58.000000000 +0200
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@@ -5783,6 +5783,9 @@
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   trampolines_created = 1;
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   INITIALIZE_TRAMPOLINE (r_tramp, r_func, r_chain);
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+  if (warn_trampolines)
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+    warning (OPT_Wtrampolines, "generating trampoline in object (requires executable stack)");
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+
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   return const0_rtx;
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 }
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diff -durN gcc-4.4.5.orig/gcc/common.opt gcc-4.4.5/gcc/common.opt
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--- gcc-4.4.5.orig/gcc/common.opt	2009-03-28 18:28:45.000000000 +0100
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+++ gcc-4.4.5/gcc/common.opt	2010-10-09 22:57:58.000000000 +0200
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@@ -197,6 +197,10 @@
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 Common Var(warn_type_limits) Init(-1) Warning
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 Warn if a comparison is always true or always false due to the limited range of the data type
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+Wtrampolines
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+Common Var(warn_trampolines) Init(1)
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+Warn whenever a trampoline is generated
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+
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 Wuninitialized
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 Common Var(warn_uninitialized) Warning
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 Warn about uninitialized automatic variables