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commit: 5277d012d4d21640d82ba9c82748d8b63523804c |
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Author: Sergei Trofimovich <slyfox <AT> gentoo <DOT> org> |
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AuthorDate: Sat Oct 26 16:33:17 2019 +0000 |
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Commit: Sergei Trofimovich <slyfox <AT> gentoo <DOT> org> |
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CommitDate: Sat Oct 26 16:36:09 2019 +0000 |
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URL: https://gitweb.gentoo.org/repo/gentoo.git/commit/?id=5277d012 |
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|
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toolchain.eclass: filter out -mstackrealign, bug #688580 |
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|
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-mstackrealign breaks stack unwinding via _Unwind_RaiseException |
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in libgcc_s.so.1. Not clear why exactly. Probably by breaking |
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unwinding information during realignment. |
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|
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The change works it around by dropping -mstackrealign when building gcc. |
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|
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Reported-by: Erik |
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Bug: https://bugs.gentoo.org/688580 |
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Signed-off-by: Sergei Trofimovich <slyfox <AT> gentoo.org> |
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|
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eclass/toolchain.eclass | 7 +++++++ |
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1 file changed, 7 insertions(+) |
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|
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diff --git a/eclass/toolchain.eclass b/eclass/toolchain.eclass |
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index b1ba774ea0c..7e88900737a 100644 |
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--- a/eclass/toolchain.eclass |
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+++ b/eclass/toolchain.eclass |
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@@ -1547,6 +1547,13 @@ gcc_do_filter_flags() { |
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filter-flags -Wstack-protector |
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fi |
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|
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+ if tc_version_is_between 6 8 ; then |
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+ # -mstackrealign triggers crashes in exception throwing |
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+ # at least on ada: bug #688580 |
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+ # The reason is unknown. Drop the flag for now. |
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+ filter-flags -mstackrealign |
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+ fi |
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+ |
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if tc_version_is_at_least 3.4 ; then |
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case $(tc-arch) in |
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amd64|x86) |
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