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77091b167f
Specifically, warn if: * we find a character that the language standard says we must treat as an identifier, and * that character is not reasonably an identifier character (it's a punctuation character or similar), and * it renders identically to a valid non-identifier character in common fixed-width fonts. Some tools "helpfully" substitute the surprising characters for the expected characters, and replacing semicolons with Greek question marks is a common "prank". llvm-svn: 320697
41 lines
1.5 KiB
C
41 lines
1.5 KiB
C
// RUN: %clang_cc1 -fsyntax-only -verify -x c -std=c11 %s
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// RUN: %clang_cc1 -fsyntax-only -verify -x c++ -std=c++11 %s
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// RUN: %clang_cc1 -E -DPP_ONLY=1 %s -o %t
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// RUN: FileCheck --strict-whitespace --input-file=%t %s
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// This file contains Unicode characters; please do not "fix" them!
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extern int x; // expected-warning {{treating Unicode character as whitespace}}
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extern int x; // expected-warning {{treating Unicode character as whitespace}}
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// CHECK: extern int {{x}}
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// CHECK: extern int {{x}}
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#pragma mark ¡Unicode!
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#define COPYRIGHT Copyright © 2012
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#define XSTR(X) #X
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#define STR(X) XSTR(X)
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static const char *copyright = STR(COPYRIGHT); // no-warning
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// CHECK: static const char *copyright = "Copyright © {{2012}}";
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#if PP_ONLY
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COPYRIGHT
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// CHECK: Copyright © {{2012}}
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CHECK: The preprocessor should not complain about Unicode characters like ©.
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#endif
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// A 🌹 by any other name....
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extern int 🌹;
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int 🌵(int 🌻) { return 🌻+ 1; }
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int main () {
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int 🌷 = 🌵(🌹);
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return 🌷;
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}
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int n; = 3; // expected-warning {{treating Unicode character <U+037E> as identifier character rather than as ';' symbol}}
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int *n꞉꞉v = &n;; // expected-warning 2{{treating Unicode character <U+A789> as identifier character rather than as ':' symbol}}
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// expected-warning@-1 {{treating Unicode character <U+037E> as identifier character rather than as ';' symbol}}
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int v＝［＝］（auto）｛return～x；｝（）; // expected-warning 12{{treating Unicode character}}
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