[ifs] Use a tmp file instead of "-"

[Jake-Egan]

Summary

Currently, Clang on AIX uses the system assembler to generate object files from assembly. The use of -o - results in a file named - instead of output to stdout. This patch uses a temporary object file instead.

[DiggerLin]

LGTM

[hubert.reinterpretcast]

We should update the description to reflect the cause more accurately.

[hubert.reinterpretcast]

clang/test/InterfaceStubs/object.c

2

With the temporary file added, the pipe is unnecessary (and possibly unwanted). Does the suggestion here work?

[Jake-Egan]

Removed the unncessary pipe.

clang/test/InterfaceStubs/object.c

2

Yes this suggestion works. I updated the patch accordingly

[hubert.reinterpretcast]

LGTM; thanks!

clang/test/InterfaceStubs/object.c

 // RUN: %clang_cc1 -fvisibility default -o - -emit-interface-stubs %s | FileCheck -check-prefix=CHECK-TAPI %s
-// RUN: %clang -fvisibility=default -c -o - %s | llvm-nm - 2>&1 | FileCheck -check-prefix=CHECK-SYMBOLS %s
+// RUN: %clang -fvisibility=default -c -o %t.o %s | llvm-nm %t.o 2>&1 | FileCheck -check-prefix=CHECK-SYMBOLS %s
 
 // CHECK-TAPI: data", Type: Object, Size: 4 }
 // CHECK-SYMBOLS: data
 int data = 42;