зеркало из https://github.com/mozilla/gecko-dev.git
Backed out changeset 192cc007fef6 (bug 1742864) for xpcshell failure on test_dmd.js
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@ -876,20 +876,6 @@ static void DoFramePointerStackWalk(MozWalkStackCallback aCallback,
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FrameSkipper skipper(aFirstFramePC);
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uint32_t numFrames = 0;
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// Sanitize the given aBp. Assume that something reasonably close to
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// but before the stack end is going be a valid frame pointer. Also
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// check that it is an aligned address. This increases the chances
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// that if the pointer is not valid (which might happen if the caller
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// called __builtin_frame_address(1) and its frame is busted for some
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// reason), we won't read it, leading to a crash. Because the calling
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// code is not using frame pointers when returning, it might actually
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// recover just fine.
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static const uintptr_t kMaxStackSize = 8 * 1024 * 1024;
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if (uintptr_t(aBp) < uintptr_t(aStackEnd) - kMaxStackSize ||
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aBp >= aStackEnd || (uintptr_t(aBp) & 3)) {
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return;
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}
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while (aBp) {
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void** next = (void**)*aBp;
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// aBp may not be a frame pointer on i386 if code was compiled with
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