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comparison gcc/testsuite/gcc.dg/cpp/ucnid-7-utf8.c @ 145:1830386684a0

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gcc-9.2.0
author anatofuz
date Thu, 13 Feb 2020 11:34:05 +0900
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131:84e7813d76e9 145:1830386684a0
1 /* { dg-do compile } */
2 /* { dg-options "-std=c99" } */
3
4 /* When GCC reads UTF-8-encoded input into its internal UTF-8
5 representation, it does not apply any transformation to the data, and
6 in particular it makes no attempt to verify that the encoding is valid
7 UTF-8. Historically, if any non-ASCII characters were found outside a
8 string or comment, they were treated as stray tokens and did not
9 necessarily produce an error, e.g. if, as in this test, they disappear
10 in the preprocessor. Now that UTF-8 is also supported in identifiers,
11 the basic structure of this process has not changed; GCC just treats
12 invalid UTF-8 as a stray token. This test verifies that the historical
13 behavior is unchanged. In the future, if GCC were changed, say, to
14 validate the UTF-8 on input, then this test would no longer be
15 appropriate. */
16
17
18 #define a b(
19 #define b(x) q
20 /* The line below contains invalid UTF-8. */
21 int aĻ);