[binutils-gdb] gdb: ignore -Wregister instead of -Wdeprecated-register
Simon Marchi
simark@sourceware.org
Mon Apr 8 02:58:44 GMT 2024
https://sourceware.org/git/gitweb.cgi?p=binutils-gdb.git;h=ecc3c386677c2c096b2d589588dd26d21a0fb476
commit ecc3c386677c2c096b2d589588dd26d21a0fb476
Author: Simon Marchi <simon.marchi@efficios.com>
Date: Sun Apr 7 22:57:19 2024 -0400
gdb: ignore -Wregister instead of -Wdeprecated-register
When building GDB on Centos 7 (which has flex 2.5.37) and Clang, I get:
$ make ada-exp.o
YACC ada-exp.c
LEX ada-lex.c
CXX ada-exp.o
In file included from /home/smarchi/src/binutils-gdb/gdb/ada-exp.y:1179:
<stdout>:1106:2: error: ISO C++17 does not allow 'register' storage class specifier [-Wregister]
1106 | register yy_state_type yy_current_state;
| ^~~~~~~~
In ada-lex.l, we already use `DIAGNOSTIC_IGNORE_DEPRECATED_REGISTER`,
which for Clang translates to ignoring `-Wdeprecated-register` [1]. I think
that was produced when compiling as C++11, but now that we always compile as
C++17, Clang produces a `-Wregister` error [2].
For GCC, `DIAGNOSTIC_IGNORE_DEPRECATED_REGISTER` already translates to
ignoring `-Wregister`. So, rename
`DIAGNOSTIC_IGNORE_DEPRECATED_REGISTER` to `DIAGNOSTIC_IGNORE_REGISTER`
and ignore `-Wregister` for Clang too.
[1] https://releases.llvm.org/17.0.1/tools/clang/docs/DiagnosticsReference.html#wdeprecated-register
[2] https://releases.llvm.org/17.0.1/tools/clang/docs/DiagnosticsReference.html#wregister
include/ChangeLog:
* diagnostics.h (DIAGNOSTIC_IGNORE_DEPRECATED_REGISTER): Rename
to...
(DIAGNOSTIC_IGNORE_REGISTER): ... this. Ignore `-Wregister`
instead of `-Wdeprecated-register`.
Change-Id: I8a4a51c7222c68577fa22ecacdddfcba32d9dbc5
Diff:
---
gdb/ada-lex.l | 10 ++++------
include/ChangeLog | 7 +++++++
include/diagnostics.h | 11 +++++------
3 files changed, 16 insertions(+), 12 deletions(-)
diff --git a/gdb/ada-lex.l b/gdb/ada-lex.l
index 1b1aaf89005..136e6dd3c2c 100644
--- a/gdb/ada-lex.l
+++ b/gdb/ada-lex.l
@@ -48,13 +48,11 @@ NOT_COMPLETE [^\001]
#include "diagnostics.h"
-/* Some old versions of flex generate code that uses the "register" keyword,
- which clang warns about. This was observed for example with flex 2.5.35,
- as shipped with macOS 10.12. The same happens with flex 2.5.37 and g++ 11
- which defaults to ISO C++17, that does not allow register storage class
- specifiers. */
+/* Some old versions of flex (2.5.x) generate code that uses the "register"
+ keyword, which compilers warn about, because it is not allowed in ISO
+ C++17. */
DIAGNOSTIC_PUSH
-DIAGNOSTIC_IGNORE_DEPRECATED_REGISTER
+DIAGNOSTIC_IGNORE_REGISTER
#define NUMERAL_WIDTH 256
#define LONGEST_SIGN ((ULONGEST) 1 << (sizeof(LONGEST) * HOST_CHAR_BIT - 1))
diff --git a/include/ChangeLog b/include/ChangeLog
index db5c258cbdf..bf4aa1d67f6 100644
--- a/include/ChangeLog
+++ b/include/ChangeLog
@@ -1,3 +1,10 @@
+2024-04-07 Simon Marchi <simon.marchi@efficios.com>
+
+ * diagnostics.h (DIAGNOSTIC_IGNORE_DEPRECATED_REGISTER): Rename
+ to...
+ (DIAGNOSTIC_IGNORE_REGISTER): ... this. Ignore `-Wregister`
+ instead of `-Wdeprecated-register`.
+
2024-02-14 Yuriy Kolerov <ykolerov@synopsys.com>
* opcode/arc.h (enum insn_class_t): Add DBNZ class.
diff --git a/include/diagnostics.h b/include/diagnostics.h
index 8cc2b493d2c..97e30ab807f 100644
--- a/include/diagnostics.h
+++ b/include/diagnostics.h
@@ -53,8 +53,8 @@
# define DIAGNOSTIC_IGNORE_SELF_MOVE DIAGNOSTIC_IGNORE ("-Wself-move")
# define DIAGNOSTIC_IGNORE_DEPRECATED_DECLARATIONS \
DIAGNOSTIC_IGNORE ("-Wdeprecated-declarations")
-# define DIAGNOSTIC_IGNORE_DEPRECATED_REGISTER \
- DIAGNOSTIC_IGNORE ("-Wdeprecated-register")
+# define DIAGNOSTIC_IGNORE_REGISTER DIAGNOSTIC_IGNORE ("-Wregister")
+
# if __has_warning ("-Wenum-compare-switch")
# define DIAGNOSTIC_IGNORE_SWITCH_DIFFERENT_ENUM_TYPES \
DIAGNOSTIC_IGNORE ("-Wenum-compare-switch")
@@ -87,8 +87,7 @@
DIAGNOSTIC_IGNORE ("-Wdeprecated-declarations")
# if __GNUC__ >= 7
-# define DIAGNOSTIC_IGNORE_DEPRECATED_REGISTER \
- DIAGNOSTIC_IGNORE ("-Wregister")
+# define DIAGNOSTIC_IGNORE_REGISTER DIAGNOSTIC_IGNORE ("-Wregister")
# endif
# define DIAGNOSTIC_IGNORE_STRINGOP_TRUNCATION \
@@ -128,8 +127,8 @@
# define DIAGNOSTIC_IGNORE_DEPRECATED_DECLARATIONS
#endif
-#ifndef DIAGNOSTIC_IGNORE_DEPRECATED_REGISTER
-# define DIAGNOSTIC_IGNORE_DEPRECATED_REGISTER
+#ifndef DIAGNOSTIC_IGNORE_REGISTER
+# define DIAGNOSTIC_IGNORE_REGISTER
#endif
#ifndef DIAGNOSTIC_IGNORE_SWITCH_DIFFERENT_ENUM_TYPES
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