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36 lines
1.6 KiB
Diff
36 lines
1.6 KiB
Diff
From 605c51ed96ad44b34c457bbca320e74e194c317e Mon Sep 17 00:00:00 2001
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From: David Faure <david.faure@kdab.com>
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Date: Wed, 15 Dec 2021 22:26:40 +0100
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Subject: [PATCH] Fix for non-constant SIGSTKSZ
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On glibc > 2.33, `SIGSTKSZ` might not be constant (in which case
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it expands to a call to `sysconf` which returns a `long int`); see
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https://sourceware.org/pipermail/libc-alpha/2020-October/118513.html
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Pass unsigned explicitly to std::max, to avoid relying on template
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argument deduction. This works both with the old-style constant
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`SIGSTKSZ` and the new configurable one.
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Initially based on https://chromium-review.googlesource.com/c/2776379
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Change-Id: I9fc95337f973e871b84735ce822b5e11ba73ea8c
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Reviewed-on: https://chromium-review.googlesource.com/c/breakpad/breakpad/+/3340721
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Reviewed-by: Mark Mentovai <mark@chromium.org>
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---
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src/client/linux/handler/exception_handler.cc | 2 +-
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1 file changed, 1 insertion(+), 1 deletion(-)
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diff --git a/src/client/linux/handler/exception_handler.cc b/src/client/linux/handler/exception_handler.cc
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index ca353c40..499be0a9 100644
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--- a/src/client/linux/handler/exception_handler.cc
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+++ b/src/client/linux/handler/exception_handler.cc
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@@ -138,7 +138,7 @@ void InstallAlternateStackLocked() {
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// SIGSTKSZ may be too small to prevent the signal handlers from overrunning
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// the alternative stack. Ensure that the size of the alternative stack is
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// large enough.
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- static const unsigned kSigStackSize = std::max(16384, SIGSTKSZ);
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+ const unsigned kSigStackSize = std::max<unsigned>(16384, SIGSTKSZ);
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// Only set an alternative stack if there isn't already one, or if the current
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// one is too small.
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