patches/gcc/4.4.6/110-trampolinewarn.patch
author Titus von Boxberg <titus@v9g.de>
Mon Aug 22 09:26:02 2011 +0200 (2011-08-22)
branch1.12
changeset 2640 e40c55e445b8
parent 2149 98b7806295cc
permissions -rw-r--r--
debug/ltrace: Fix HOST_OS and ar

HOST_OS really is the target OS. Allow setting it for configure
via an environment variable.
libltrace.a should have an index:
Allow ar to be set as an environment variable, and generate
an index in this lib.

Reported-by: "Guylhem Aznar" <crossgcc@guylhem.net>
Signed-off-by: "Titus von Boxberg" <titus@v9g.de>
(transplanted from f86af11138ea2b2ecd4876d9c6c24f58ba4d68ac)
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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