clang/test/Misc/dev-fd-fs.c

   1 // Check that we can operate on files from /dev/fd.
   2 // REQUIRES: dev-fd-fs
   3 // REQUIRES: shell
   4
   5 // Check reading from named pipes. We cat the input here instead of redirecting
   6 // it to ensure that /dev/fd/0 is a named pipe, not just a redirected file.
   7 //
   8 // RUN: cat %s | %clang -x c /dev/fd/0 -E > %t
   9 // RUN: FileCheck --check-prefix DEV-FD-INPUT < %t %s
  10 //
  11 // RUN: cat %s | %clang -x c %s -E -DINCLUDE_FROM_STDIN > %t
  12 // RUN: FileCheck --check-prefix DEV-FD-INPUT \
  13 // RUN:           --check-prefix DEV-FD-INPUT-INCLUDE < %t %s
  14 //
  15 // DEV-FD-INPUT-INCLUDE: int w;
  16 // DEV-FD-INPUT: int x;
  17 // DEV-FD-INPUT-INCLUDE: int y;
  18
  19
  20 // Check writing to /dev/fd named pipes. We use cat here as before to ensure we
  21 // get a named pipe.
  22 //
  23 // RUN: %clang -x c %s -E -o /dev/fd/1 | cat > %t
  24 // RUN: FileCheck --check-prefix DEV-FD-FIFO-OUTPUT < %t %s
  25 //
  26 // DEV-FD-FIFO-OUTPUT: int x;
  27
  28
  29 // Check writing to /dev/fd regular files.
  30 //
  31 // RUN: %clang -x c %s -E -o /dev/fd/1 > %t
  32 // RUN: FileCheck --check-prefix DEV-FD-REG-OUTPUT < %t %s
  33 //
  34 // DEV-FD-REG-OUTPUT: int x;
  35
  36 #ifdef INCLUDE_FROM_STDIN
  37 #undef INCLUDE_FROM_STDIN
  38 int w;
  39 #include "/dev/fd/0"
  40 int y;
  41 #else
  42 int x;
  43 #endif