7abe39c68a
Compiling using clang fails with following error: error: unannotated fall-through between switch labels [-Werror,-Wimplicit-fallthrough] Actually, missing 'break' statement is not an error here because the next label is 'default' which contains 'break' only. For the same reason we can add it to silence the compiler. Signed-off-by: Patryk Duda <pdk@semihalf.com>
60 lines
1.8 KiB
C
60 lines
1.8 KiB
C
/* SPDX-License-Identifier: MIT */
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/*
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* Copyright © 2005-2014 Rich Felker, et al.
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*
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* Permission is hereby granted, free of charge, to any person obtaining
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* a copy of this software and associated documentation files (the
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* "Software"), to deal in the Software without restriction, including
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* without limitation the rights to use, copy, modify, merge, publish,
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* distribute, sublicense, and/or sell copies of the Software, and to
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* permit persons to whom the Software is furnished to do so, subject to
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* the following conditions:
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*
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* The above copyright notice and this permission notice shall be
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* included in all copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
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* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
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* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
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* IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY
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* CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
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* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
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* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
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*/
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/* From: http://fossies.org/dox/musl-1.0.5/atoi_8c_source.html */
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#include <stdlib.h>
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#include <ctype.h>
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int atoi(const char *s)
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{
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int n = 0;
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int neg = 0;
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while (isspace((unsigned char)*s) != 0) {
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s++;
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}
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switch (*s) {
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case '-':
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neg = 1;
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s++;
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break; /* artifact to quiet coverity warning */
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case '+':
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s++;
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break;
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default:
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/* Add an empty default with break, this is a defensive programming.
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* Static analysis tool won't raise a violation if default is empty,
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* but has that comment.
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*/
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break;
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}
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/* Compute n as a negative number to avoid overflow on INT_MIN */
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while (isdigit((unsigned char)*s) != 0) {
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n = 10*n - (*s++ - '0');
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}
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return neg ? n : -n;
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}
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