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Connor Wakamo 3722438826 [driver] Fix an assertion failure when running "swiftc -v -force-single-frontend-invocation".

Previously, the driver would unconditionally create a CompileJobAction if it was
in SingleCompile or Immediate mode. If there were no inputs, though, the driver
would end up asserting later because it could not create a Command for a
CompileJobAction with no inputs.

To match the behavior of the StandardCompile mode, avoid creating a
CompileJobAction if there are no inputs. (This change only affects -v, since it
disables the 'no input files' error which otherwise prevents this condition from
being hit.)

Additionally, added a test to check swiftc's behavior when no inputs are
provided.

Swift SVN r20900

2014-08-01 17:55:08 +00:00

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311 B

Swift

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 // RUN: %swiftc_driver_plain -v 2>&1 | FileCheck %s
 // RUN: %swiftc_driver_plain -v -force-single-frontend-invocation 2>&1 | FileCheck %s
 // RUN: not %swiftc_driver_plain -emit-executable 2>&1 | FileCheck --check-prefix=CHECK-ERROR %s
 // CHECK-NOT: error: no input files
 // CHECK-ERROR: error: no input files