0fb3552632
This fixes gcc bug 6144, which in my case exhibited itself as a kernel module that failed to load. This was because static platform_data structures were being corrupted with the optimiser being set to any value other than -O0. Originally-submitted-by: Peter Urbanec <openembedded-devel@urbanec.net> (From OE-Core rev: 365221f7285c0e392f573deaab3b1e00b12bc293) Signed-off-by: Saul Wold <sgw@linux.intel.com> Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>
32 lines
1.1 KiB
Diff
32 lines
1.1 KiB
Diff
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Upstream-Status: Backport
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Originally-submitted-by: Peter Urbanec <openembedded-devel@urbanec.net>
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Signed-off-by: Saul Wold <sgw@linux.intel.com>
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--- /dev/null
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+++ b/meta/recipes-devtools/gcc/gcc-4.9/0056-top-level-reorder_gcc-bug-61144.patch
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@@ -0,0 +1,21 @@
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+--- a/gcc/varpool.c 2014/10/05 02:50:01 215895
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++++ b/gcc/varpool.c 2014/10/05 04:52:19 215896
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+@@ -329,8 +329,16 @@
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+
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+ /* Variables declared 'const' without an initializer
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+ have zero as the initializer if they may not be
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+- overridden at link or run time. */
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+- if (!DECL_INITIAL (real_decl)
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++ overridden at link or run time.
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++
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++ It is actually requirement for C++ compiler to optimize const variables
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++ consistently. As a GNU extension, do not enfore this rule for user defined
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++ weak variables, so we support interposition on:
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++ static const int dummy = 0;
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++ extern const int foo __attribute__((__weak__, __alias__("dummy")));
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++ */
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++ if ((!DECL_INITIAL (real_decl)
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++ || (DECL_WEAK (decl) && !DECL_COMDAT (decl)))
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+ && (DECL_EXTERNAL (decl) || decl_replaceable_p (decl)))
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+ return error_mark_node;
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+
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