crosstool-ng/patches/gcc/4.3.0/110-trampolinewarn.patch

36 lines
1.4 KiB
Diff

Original patch from gentoo: gentoo/src/patchsets/gcc/4.3.0/gentoo/00_all_gcc-trampolinewarn.patch
This trivial patch causes gcc to emit a warning whenever
it generates a trampoline. These are otherwise hard to
locate. It is rigged to default ON - to have it default
to OFF remove the text 'Init(1)' from the common.opt
patch, leaving just 'Common Var(warn_trampolines)'.
Kevin F. Quinn <kevquinn@gentoo.org> 17 Jan 2006
diff -durN gcc-4.3.0.orig/gcc/builtins.c gcc-4.3.0/gcc/builtins.c
--- gcc-4.3.0.orig/gcc/builtins.c 2008-02-20 18:27:21.000000000 +0100
+++ gcc-4.3.0/gcc/builtins.c 2008-06-10 14:44:10.000000000 +0200
@@ -5659,6 +5659,9 @@
trampolines_created = 1;
INITIALIZE_TRAMPOLINE (r_tramp, r_func, r_chain);
+ if (warn_trampolines)
+ warning (OPT_Wtrampolines, "generating trampoline in object (requires executable stack)");
+
return const0_rtx;
}
diff -durN gcc-4.3.0.orig/gcc/common.opt gcc-4.3.0/gcc/common.opt
--- gcc-4.3.0.orig/gcc/common.opt 2008-01-22 15:11:44.000000000 +0100
+++ gcc-4.3.0/gcc/common.opt 2008-06-10 14:44:10.000000000 +0200
@@ -182,6 +182,10 @@
Common Var(warn_system_headers) Warning
Do not suppress warnings from system headers
+Wtrampolines
+Common Var(warn_trampolines) Init(1)
+Warn whenever a trampoline is generated
+
Wuninitialized
Common Var(warn_uninitialized) Warning
Warn about uninitialized automatic variables