[llvm] r317523 - [Support][Chrono] Use explicit cast of text output of time values.

[Simon Dardis via llvm-commits]

Author: sdardis
Date: Mon Nov  6 15:01:46 2017
New Revision: 317523

URL: http://llvm.org/viewvc/llvm-project?rev=317523&view=rev
Log:
[Support][Chrono] Use explicit cast of text output of time values.

rL316419 exposed a platform specific issue where the type of the values
passed to llvm::format could be different to the format string.

Debian unstable for mips uses long long int for std::chrono:duration,
while x86_64 uses long int.

For mips, this resulted in the value being corrupted when rendered to a
string. Address this by explicitly casting the result of the duration_cast
to the type specified in the format string.

Reviewers: sammccall

Differential Revision: https://reviews.llvm.org/D39597

Modified:
    llvm/trunk/lib/Support/Chrono.cpp

Modified: llvm/trunk/lib/Support/Chrono.cpp
URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/lib/Support/Chrono.cpp?rev=317523&r1=317522&r2=317523&view=diff
==============================================================================
--- llvm/trunk/lib/Support/Chrono.cpp (original)
+++ llvm/trunk/lib/Support/Chrono.cpp Mon Nov  6 15:01:46 2017
@@ -65,17 +65,17 @@ void format_provider<TimePoint<>>::forma
     if (Style[I] == '%' && Style.size() > I + 1) switch (Style[I + 1]) {
         case 'L':  // Milliseconds, from Ruby.
           FStream << llvm::format(
-              "%.3lu", duration_cast<milliseconds>(Fractional).count());
+              "%.3lu", (long)duration_cast<milliseconds>(Fractional).count());
           ++I;
           continue;
         case 'f':  // Microseconds, from Python.
           FStream << llvm::format(
-              "%.6lu", duration_cast<microseconds>(Fractional).count());
+              "%.6lu", (long)duration_cast<microseconds>(Fractional).count());
           ++I;
           continue;
         case 'N':  // Nanoseconds, from date(1).
           FStream << llvm::format(
-              "%.6lu", duration_cast<nanoseconds>(Fractional).count());
+              "%.6lu", (long)duration_cast<nanoseconds>(Fractional).count());
           ++I;
           continue;
         case '%':  // Consume %%, so %%f parses as (%%)f not %(%f)