[llvm-bugs] [Bug 40463] New: Merge r352204 into the 8.0 branch

[via llvm-bugs]

https://bugs.llvm.org/show_bug.cgi?id=40463

            Bug ID: 40463
           Summary: Merge r352204 into the 8.0 branch
           Product: libraries
           Version: trunk
          Hardware: PC
                OS: Linux
            Status: NEW
          Severity: enhancement
          Priority: P
         Component: Support Libraries
          Assignee: unassignedbugs at nondot.org
          Reporter: sammccall at google.com
                CC: llvm-bugs at lists.llvm.org
            Blocks: 40274, 40331

This works around a floating-point excess-precision issue that causes JSON.cpp
to be miscompiled on gcc 7 when targeting 32-bit x86 in release mode.

It's a release blocker because it causes the unit tests to fail.


Referenced Bugs:

https://bugs.llvm.org/show_bug.cgi?id=40274
[Bug 40274] JSONTest.Integers fails when built with gcc on 32-bit x86
https://bugs.llvm.org/show_bug.cgi?id=40331
[Bug 40331] [meta] 8.0.0 Release Blockers
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