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| author | Richard Smith <richard-llvm@metafoo.co.uk> | 2017-12-14 13:15:08 +0000 |
|---|---|---|
| committer | Richard Smith <richard-llvm@metafoo.co.uk> | 2017-12-14 13:15:08 +0000 |
| commit | 77091b167fd959e1ee0c4dad4ec44de43b6c95db (patch) | |
| tree | 9e068262e88c9ae489457581de5bd31c914d2a78 /clang/test/Lexer | |
| parent | bf484aa0f137c88729136f5a477e0a0594a58769 (diff) | |
| download | bcm5719-llvm-77091b167fd959e1ee0c4dad4ec44de43b6c95db.tar.gz bcm5719-llvm-77091b167fd959e1ee0c4dad4ec44de43b6c95db.zip | |
Warn if we find a Unicode homoglyph for a symbol in an identifier.
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
Diffstat (limited to 'clang/test/Lexer')
| -rw-r--r-- | clang/test/Lexer/unicode.c | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/clang/test/Lexer/unicode.c b/clang/test/Lexer/unicode.c index 30805d1acb2..30e353fa797 100644 --- a/clang/test/Lexer/unicode.c +++ b/clang/test/Lexer/unicode.c @@ -33,3 +33,8 @@ int main () { int 🌷 = 🌵(🌹); return 🌷; } + +int n; = 3; // expected-warning {{treating Unicode character <U+037E> as identifier character rather than as ';' symbol}} +int *n꞉꞉v = &n;; // expected-warning 2{{treating Unicode character <U+A789> as identifier character rather than as ':' symbol}} + // expected-warning@-1 {{treating Unicode character <U+037E> as identifier character rather than as ';' symbol}} +int v＝［＝］（auto）｛return～x；｝（）; // expected-warning 12{{treating Unicode character}} |
