clang/test/Preprocessor/line-directive-system-headers.c

   1 // RUN: %clang_cc1 -fsyntax-only -pedantic -verify %s
   2 // RUN: %clang_cc1 -fsyntax-only -pedantic -verify=system -Wsystem-headers %s
   3
   4 int x;
   5
   6 # 42 // #1
   7 // expected-warning@#1 {{this style of line directive is a GNU extension}}
   8 // system-warning@#1 {{this style of line directive is a GNU extension}}
   9 # 42 "foo" // #2
  10 // expected-warning@#2 {{this style of line directive is a GNU extension}}
  11 // system-warning@#2 {{this style of line directive is a GNU extension}}
  12 # 42 "foo" 2 // #3
  13 // expected-error@#3 {{invalid line marker flag '2': cannot pop empty include stack}}
  14 // system-error@#3 {{invalid line marker flag '2': cannot pop empty include stack}}
  15 # 42 "foo" 1 3  // #4: enter
  16 // Warnings silenced when -Wsystem-headers isn't passed.
  17 // system-warning@#4 {{this style of line directive is a GNU extension}}
  18 # 42 "foo" 2 3  // #5: exit
  19 // Warnings silenced when -Wsystem-headers isn't passed.
  20 // system-warning@#5 {{this style of line directive is a GNU extension}}
  21 # 42 "foo" 2 3 4 // #6
  22 // expected-error@#6 {{invalid line marker flag '2': cannot pop empty include stack}}
  23 // system-error@#6 {{invalid line marker flag '2': cannot pop empty include stack}}
  24 # 42 "foo" 3 4 // #7
  25 // expected-warning@#7 {{this style of line directive is a GNU extension}}
  26 // system-warning@#7 {{this style of line directive is a GNU extension}}
  27
  28
  29 // Verify that linemarker diddling of the system header flag works.
  30
  31 # 192 "glomp.h" // #8: not a system header.
  32 // expected-warning@#8 {{this style of line directive is a GNU extension}}
  33 // system-warning@#8 {{this style of line directive is a GNU extension}}
  34
  35 # 192 "glomp.h" 3 // #9: System header.
  36 // Warnings silenced when -Wsystem-headers isn't passed.
  37 // system-warning@#9 {{this style of line directive is a GNU extension}}
  38
  39 #line 42 "blonk.h"  // doesn't change system headerness.
  40
  41 # 97     // #10: doesn't change system headerness.
  42 // Warnings silenced when -Wsystem-headers isn't passed.
  43 // system-warning@#10 {{this style of line directive is a GNU extension}}
  44
  45 # 42 "blonk.h"  // #11: DOES change system headerness.
  46 // Warnings silenced when -Wsystem-headers isn't passed.
  47 // system-warning@#11 {{this style of line directive is a GNU extension}}