patches/gcc/4.4.4/110-trampolinewarn.patch
author David Holsgrove <david.holsgrove@xilinx.com>
Wed Oct 03 15:59:22 2012 +1000 (2012-10-03)
changeset 3071 5243d1b432b1
parent 1948 d341be24dc68
permissions -rw-r--r--
scripts/gdb: If not building expat for gdb, disable

--with-expat=yes is unconditionally passed to the gdb configure
stage, instead of respecting the ${do_expat} decision.

Disable if not needed. Prevents error building canadian cross;

configure: error: expat is missing or unusable

Where configure stage fails to find expat on the host compiler.

Signed-off-by: "David Holsgrove" <david.holsgrove@xilinx.com>
Signed-off-by: Bryan Hundven <bryanhundven@gmail.com>
Message-Id: <4c4410a2a8aab24a29c5.1349244128@localhost.localdomain>
PatchWork-Id: 188711
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