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authorTom Honermann <tom@honermann.net>2022-07-24 01:11:43 -0400
committerAdhemerval Zanella <adhemerval.zanella@linaro.org>2022-08-01 09:39:07 -0300
commit825f84f133bd840347dc49229b6d831f07d04775 (patch)
treee4784a7e57e53707a81a6d4f96895da68f13bd73 /wcsmbs
parent5fded9c44537283593a7f839347f831e15726572 (diff)
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stdlib: Suppress gcc diagnostic that char8_t is a keyword in C++20 in uchar.h.
gcc 13 issues the following diagnostic for the uchar.h header when the -Wc++20-compat option is enabled in C++ modes that do not enable char8_t as a builtin type (C++17 and earlier by default; subject to _GNU_SOURCE and the gcc -f[no-]char8_t option). warning: identifier ‘char8_t’ is a keyword in C++20 [-Wc++20-compat] This change modifies the uchar.h header to suppress the diagnostic through the use of '#pragma GCC diagnostic' directives for gcc 10 and later (the -Wc++20-compat option was added in gcc version 10). Unfortunately, a bug in gcc currently prevents those directives from having the intended effect as reported at https://gcc.gnu.org/PR106423. A patch for that issue has been submitted and is available in the email thread archive linked below. https://gcc.gnu.org/pipermail/gcc-patches/2022-July/598736.html
Diffstat (limited to 'wcsmbs')
-rw-r--r--wcsmbs/uchar.h8
1 files changed, 8 insertions, 0 deletions
diff --git a/wcsmbs/uchar.h b/wcsmbs/uchar.h
index c37e861..5f7139f 100644
--- a/wcsmbs/uchar.h
+++ b/wcsmbs/uchar.h
@@ -34,8 +34,16 @@
/* Declare the C2x char8_t typedef in C2x modes, but only if the C++
__cpp_char8_t feature test macro is not defined. */
#if __GLIBC_USE (ISOC2X) && !defined __cpp_char8_t
+#if __GNUC_PREREQ (10, 0) && defined __cplusplus
+/* Suppress the diagnostic regarding char8_t being a keyword in C++20. */
+# pragma GCC diagnostic push
+# pragma GCC diagnostic ignored "-Wc++20-compat"
+#endif
/* Define the 8-bit character type. */
typedef unsigned char char8_t;
+#if __GNUC_PREREQ (10, 0) && defined __cplusplus
+# pragma GCC diagnostic pop
+#endif
#endif
#ifndef __USE_ISOCXX11