mirror of
https://git.savannah.gnu.org/git/bison.git
synced 2026-03-10 04:43:03 +00:00
19d9b60787
Fix the following warning
parse-gram.c:2078:14: error: equality comparison with extraneous parentheses
[-Werror,-Wparentheses-equality]
if (((yyn) == (-91)))
~~~~~~^~~~~~~~
parse-gram.c:2078:14: note: remove extraneous parentheses around the
comparison to silence this warning
if (((yyn) == (-91)))
~ ^ ~
parse-gram.c:2078:14: note: use '=' to turn this equality comparison into
an assignment
if (((yyn) == (-91)))
^~
=
1 error generated.
and the following one:
input.cc:740:1: error: function declared 'noreturn' should not return
[-Werror,-Winvalid-noreturn]
static void yyMemoryExhausted (yyGLRStack* yystackp)
__attribute__ ((__noreturn__));
static void
yyMemoryExhausted (yyGLRStack* yystackp)
{
YYLONGJMP (yystackp->yyexception_buffer, 2);
}
^
1 warning and 1 error generated.
This is Apple clang version 3.1 (tags/Apple/clang-318.0.61).
* data/c.m4 (b4_table_value_equals): Use (!!(A == B)) instead of (A == B)
to avoid this warning.
Any reasonable compiler should generate the same code.
* src/uniqstr.h (UNIQSTR_EQ): Likewise.
* data/glr.c (LONGJMP): abort after longjmp to pacify clang.
99 lines
3.9 KiB
C
99 lines
3.9 KiB
C
/* Keeping a unique copy of strings.
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Copyright (C) 2002-2003, 2008-2012 Free Software Foundation, Inc.
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This file is part of Bison, the GNU Compiler Compiler.
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This program is free software: you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation, either version 3 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program. If not, see <http://www.gnu.org/licenses/>. */
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#ifndef UNIQSTR_H_
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# define UNIQSTR_H_
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/*-----------------------------------------.
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| Pointers to unique copies of C strings. |
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`-----------------------------------------*/
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typedef char const *uniqstr;
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/* Return the uniqstr for STR. */
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uniqstr uniqstr_new (char const *str);
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/* Return a uniqstr built by vsprintf. In order to simply concatenate
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strings, use UNIQSTR_CONCAT, which is a convenient wrapper around
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this function. */
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uniqstr uniqstr_vsprintf (char const *format, ...)
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__attribute__ ((__format__ (__printf__, 1, 2)));
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/* Two uniqstr values have the same value iff they are the same. */
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#define UNIQSTR_EQ(USTR1, USTR2) (!!((USTR1) == (USTR2)))
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/* Compare two uniqstr a la strcmp: negative for <, nul for =, and
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positive for >. Undefined order, relies on addresses. */
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#define UNIQSTR_CMP(USTR1, USTR2) ((USTR1) - (USTR2))
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/*--------------------------------------.
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| Initializing, destroying, debugging. |
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`--------------------------------------*/
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/* Create the string table. */
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void uniqstrs_new (void);
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/* Die if STR is not a uniqstr. */
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void uniqstr_assert (char const *str);
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/* Free all the memory allocated for symbols. */
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void uniqstrs_free (void);
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/* Report them all. */
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void uniqstrs_print (void);
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/*----------------.
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| Concatenation. |
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`----------------*/
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/* Concatenate at most 20 strings and return a uniqstr. The goal of
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this macro is to make the caller's code a little more succinct
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without a trivial uniqstr_vsprintf format string to maintain
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(for example, "%s%s%s") while still benefitting from gcc's type
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checking. Unfortunately, because of the missing format string in the
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macro invocation, the argument number reported by gcc for a bad
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argument type is 1 too large. */
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#define UNIQSTR_CONCAT(...) \
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uniqstr_vsprintf (UNIQSTR_GEN_FORMAT (__VA_ARGS__, \
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"%s", "%s", "%s", "%s", "%s", \
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"%s", "%s", "%s", "%s", "%s", \
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"%s", "%s", "%s", "%s", "%s", \
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"%s", "%s", "%s", "%s", "%s"), \
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__VA_ARGS__)
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#define UNIQSTR_GEN_FORMAT(F1, F2, F3, F4, F5, \
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F6, F7, F8, F9, F10, \
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F11, F12, F13, F14, F15, \
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F16, F17, F18, F19, F20, \
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...) \
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UNIQSTR_GEN_FORMAT_ (__VA_ARGS__, \
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"", "", "", "", "", \
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"", "", "", "", "", \
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"", "", "", "", "", \
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"", "", "", "", "")
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#define UNIQSTR_GEN_FORMAT_(F1, F2, F3, F4, F5, \
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F6, F7, F8, F9, F10, \
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F11, F12, F13, F14, F15, \
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F16, F17, F18, F19, F20, ...) \
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F1 F2 F3 F4 F5 F6 F7 F8 F9 F10 \
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F11 F12 F13 F14 F15 F16 F17 F18 F19 F20
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#endif /* ! defined UNIQSTR_H_ */
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