| author | "Yann E. MORIN" <yann.morin.1998@free.fr> |
| Tue Jul 31 22:27:29 2012 +0200 (2012-07-31) | |
| changeset 3018 | 7776e8369284 |
| parent 746 | b150d6f590fc |
| permissions | -rw-r--r-- |
| yann@552 | 1 |
Original patch from gentoo: gentoo/src/patchsets/gcc/4.3.1/gentoo/00_all_gcc-trampolinewarn.patch |
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This trivial patch causes gcc to emit a warning whenever |
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it generates a trampoline. These are otherwise hard to |
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locate. It is rigged to default ON - to have it default |
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to OFF remove the text 'Init(1)' from the common.opt |
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patch, leaving just 'Common Var(warn_trampolines)'. |
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Kevin F. Quinn <kevquinn@gentoo.org> 17 Jan 2006 |
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|
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diff -durN gcc-4.3.1.orig/gcc/builtins.c gcc-4.3.1/gcc/builtins.c |
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--- gcc-4.3.1.orig/gcc/builtins.c 2008-04-23 00:36:27.000000000 +0200 |
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+++ gcc-4.3.1/gcc/builtins.c 2008-06-10 14:56:54.000000000 +0200 |
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@@ -5662,6 +5662,9 @@ |
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trampolines_created = 1; |
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INITIALIZE_TRAMPOLINE (r_tramp, r_func, r_chain); |
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|
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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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|
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diff -durN gcc-4.3.1.orig/gcc/common.opt gcc-4.3.1/gcc/common.opt |
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--- gcc-4.3.1.orig/gcc/common.opt 2008-01-22 15:11:44.000000000 +0100 |
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+++ gcc-4.3.1/gcc/common.opt 2008-06-10 14:56:54.000000000 +0200 |
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@@ -182,6 +182,10 @@ |
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Common Var(warn_system_headers) Warning |
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Do not suppress warnings from system headers |
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|
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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 |