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ae58cf5f45
It seems std::ostringstream ignores NaN signs on Darwin while it prints them on Linux. This causes that LLDB behaves differently on those platforms which is both confusing for users and it also means we have to deal with that in our tests. This patch manually implements the NaN/Inf printing (which are apparently implementation defined) to make LLDB print the same thing on all platforms. The only output difference in practice seems to be that we now print negative NaNs as `-nan`, but this potentially also changes the output on other systems I haven't tested this on. Reviewed By: JDevlieghere Differential Revision: https://reviews.llvm.org/D102845