patches/gcc/4.4.2/110-trampolinewarn.patch
author "Yann E. MORIN" <yann.morin.1998@anciens.enib.fr>
Tue Aug 02 18:26:53 2011 +0200 (2011-08-02)
changeset 2592 4908eb2b6f17
parent 1544 2228ea3f6b79
permissions -rw-r--r--
scripts/functions: cvs retrieval first tries the mirror for tarballs

The cvs download helper looks for the local tarballs dir to see if it
can find a pre-downloaded tarball, and if it does not find it, does
the actual fetch to upstream via cvs.

In the process, it does not even try to get a tarball from the local
mirror, which can be useful if the mirror has been pre-populated
manually (or with a previously downloaded tree).

Fake a tarball get with the standard tarball-download helper, but
without specifying any upstream URL, which makes the helper directly
try the LAN mirror.

Of course, if no mirror is specified, no URL wil be available, and
the standard cvs retrieval will kick in.

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