patches/gcc/4.4.3/110-trampolinewarn.patch
author "Yann E. MORIN" <yann.morin.1998@anciens.enib.fr>
Sun Jul 17 17:54:21 2011 +0200 (2011-07-17)
changeset 2888 dd71df95903a
parent 1611 e2516bba8fe5
permissions -rw-r--r--
cc/gcc: pass the companion libs prefix to cc_core

In case of canadian-cross, the companion libraries are not the same for
the core cc (they run on 'build') as they are for the final cc (they run
on 'host').

Prepare for this differentiation (coming later), while retaining the
current behavior (to use the same compblibs).

Signed-off-by: "Yann E. MORIN" <yann.morin.1998@anciens.enib.fr>
yann@1393
     1
diff -durN gcc-4.4.0.orig/gcc/builtins.c gcc-4.4.0/gcc/builtins.c
yann@1393
     2
--- gcc-4.4.0.orig/gcc/builtins.c	2009-03-30 19:42:27.000000000 +0200
yann@1393
     3
+++ gcc-4.4.0/gcc/builtins.c	2009-05-27 21:38:01.000000000 +0200
yann@1393
     4
@@ -5768,6 +5768,9 @@
yann@1393
     5
   trampolines_created = 1;
yann@1393
     6
   INITIALIZE_TRAMPOLINE (r_tramp, r_func, r_chain);
yann@1393
     7
 
yann@1393
     8
+  if (warn_trampolines)
yann@1393
     9
+    warning (OPT_Wtrampolines, "generating trampoline in object (requires executable stack)");
yann@1393
    10
+
yann@1393
    11
   return const0_rtx;
yann@1393
    12
 }
yann@1393
    13
 
yann@1393
    14
diff -durN gcc-4.4.0.orig/gcc/common.opt gcc-4.4.0/gcc/common.opt
yann@1393
    15
--- gcc-4.4.0.orig/gcc/common.opt	2009-03-28 18:28:45.000000000 +0100
yann@1393
    16
+++ gcc-4.4.0/gcc/common.opt	2009-05-27 21:38:01.000000000 +0200
yann@1393
    17
@@ -197,6 +197,10 @@
yann@1393
    18
 Common Var(warn_type_limits) Init(-1) Warning
yann@1393
    19
 Warn if a comparison is always true or always false due to the limited range of the data type
yann@1393
    20
 
yann@1393
    21
+Wtrampolines
yann@1393
    22
+Common Var(warn_trampolines) Init(1)
yann@1393
    23
+Warn whenever a trampoline is generated
yann@1393
    24
+
yann@1393
    25
 Wuninitialized
yann@1393
    26
 Common Var(warn_uninitialized) Warning
yann@1393
    27
 Warn about uninitialized automatic variables