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GCC Code Coverage Report

Directory:	./		Exec	Total	Coverage
File:	usr.bin/cvs/xmalloc.c	Lines:	29	42	69.0 %
Date:	2017-11-07	Branches:	12	24	50.0 %


/* $OpenBSD: xmalloc.c,v 1.13 2015/11/17 18:25:02 tobias Exp $ */
/*
 * Author: Tatu Ylonen <ylo@cs.hut.fi>
 * Copyright (c) 1995 Tatu Ylonen <ylo@cs.hut.fi>, Espoo, Finland
 *                    All rights reserved
 * Versions of malloc and friends that check their results, and never return
 * failure (they call fatal if they encounter an error).
 *
 * As far as I am concerned, the code I have written for this software
 * can be used freely for any purpose.  Any derived versions of this
 * software must be clearly marked as such, and if the derived work is
 * incompatible with the protocol description in the RFC file, it must be
 * called by a name other than "ssh" or "Secure Shell".
 */

#include <errno.h>
#include <limits.h>
#include <stdint.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>

#include "log.h"
#include "xmalloc.h"

void *
xmalloc(size_t size)
{
	void *ptr;

	if (size == 0)
		fatal("xmalloc: zero size");
	ptr = malloc(size);
	if (ptr == NULL)
		fatal("xmalloc: allocating %zu bytes: %s",
		    size, strerror(errno));
	return ptr;
}

void *
xcalloc(size_t nmemb, size_t size)
{
	void *ptr;

	if (size == 0 || nmemb == 0)
		fatal("xcalloc: zero size");
	ptr = calloc(nmemb, size);
	if (ptr == NULL)
		fatal("xcalloc: allocating %zu * %zu bytes: %s",
		    nmemb, size, strerror(errno));
	return ptr;
}

void *
xreallocarray(void *ptr, size_t nmemb, size_t size)
{
	void *new_ptr;

	if (nmemb == 0 || size == 0)
		fatal("xreallocarray: zero size");
	new_ptr = reallocarray(ptr, nmemb, size);
	if (new_ptr == NULL)
		fatal("xreallocarray: allocating %zu * %zu bytes: %s",
		    nmemb, size, strerror(errno));
	return new_ptr;
}

char *
xstrdup(const char *str)
{
	char *cp;

	if ((cp = strdup(str)) == NULL)
		fatal("xstrdup: %s", strerror(errno));
	return cp;
}

int
xasprintf(char **ret, const char *fmt, ...)
{
	va_list ap;
	int i;

	va_start(ap, fmt);
	i = vasprintf(ret, fmt, ap);
	va_end(ap);

	if (i < 0 || *ret == NULL)
		fatal("xasprintf: %s", strerror(errno));

	return i;
}

int
xsnprintf(char *str, size_t len, const char *fmt, ...)
{
	va_list ap;
	int i;

	if (len > INT_MAX)
		fatal("xsnprintf: len > INT_MAX");

	va_start(ap, fmt);
	i = vsnprintf(str, len, fmt, ap);
	va_end(ap);

	if (i < 0 || i >= (int)len)
		fatal("xsnprintf: overflow");

	return i;
}


Generated by: GCOVR (Version 3.3)

Line	Branch	Exec	Source
1			/* $OpenBSD: xmalloc.c,v 1.13 2015/11/17 18:25:02 tobias Exp $ */
2			/*
3			* Author: Tatu Ylonen <ylo@cs.hut.fi>
4			* Copyright (c) 1995 Tatu Ylonen <ylo@cs.hut.fi>, Espoo, Finland
5			* All rights reserved
6			* Versions of malloc and friends that check their results, and never return
7			* failure (they call fatal if they encounter an error).
8			*
9			* As far as I am concerned, the code I have written for this software
10			* can be used freely for any purpose. Any derived versions of this
11			* software must be clearly marked as such, and if the derived work is
12			* incompatible with the protocol description in the RFC file, it must be
13			* called by a name other than "ssh" or "Secure Shell".
14			*/
15
16			#include <errno.h>
17			#include <limits.h>
18			#include <stdint.h>
19			#include <stdio.h>
20			#include <stdlib.h>
21			#include <string.h>
22
23			#include "log.h"
24			#include "xmalloc.h"
25
26			void *
27			xmalloc(size_t size)
28			{
29			void *ptr;
30
31	✗✓	4136	if (size == 0)
32			fatal("xmalloc: zero size");
33		2068	ptr = malloc(size);
34	✗✓	2068	if (ptr == NULL)
35			fatal("xmalloc: allocating %zu bytes: %s",
36			size, strerror(errno));
37		2068	return ptr;
38			}
39
40			void *
41			xcalloc(size_t nmemb, size_t size)
42			{
43			void *ptr;
44
45	✗✓	5202	if (size == 0 \|\| nmemb == 0)
46			fatal("xcalloc: zero size");
47		2601	ptr = calloc(nmemb, size);
48	✗✓	2601	if (ptr == NULL)
49			fatal("xcalloc: allocating %zu * %zu bytes: %s",
50			nmemb, size, strerror(errno));
51		2601	return ptr;
52			}
53
54			void *
55			xreallocarray(void *ptr, size_t nmemb, size_t size)
56			{
57			void *new_ptr;
58
59	✗✓	42	if (nmemb == 0 \|\| size == 0)
60			fatal("xreallocarray: zero size");
61		21	new_ptr = reallocarray(ptr, nmemb, size);
62	✗✓	21	if (new_ptr == NULL)
63			fatal("xreallocarray: allocating %zu * %zu bytes: %s",
64			nmemb, size, strerror(errno));
65		21	return new_ptr;
66			}
67
68			char *
69			xstrdup(const char *str)
70			{
71			char *cp;
72
73	✗✓	5690	if ((cp = strdup(str)) == NULL)
74			fatal("xstrdup: %s", strerror(errno));
75		2845	return cp;
76			}
77
78			int
79			xasprintf(char *ret, const char fmt, ...)
80			{
81		74	va_list ap;
82			int i;
83
84		37	va_start(ap, fmt);
85		37	i = vasprintf(ret, fmt, ap);
86		37	va_end(ap);
87
88	✓✗✗✓	74	if (i < 0 \|\| *ret == NULL)
89			fatal("xasprintf: %s", strerror(errno));
90
91		37	return i;
92		37	}
93
94			int
95			xsnprintf(char str, size_t len, const char fmt, ...)
96			{
97		3752	va_list ap;
98			int i;
99
100	✗✓	1876	if (len > INT_MAX)
101			fatal("xsnprintf: len > INT_MAX");
102
103		1876	va_start(ap, fmt);
104		1876	i = vsnprintf(str, len, fmt, ap);
105		1876	va_end(ap);
106
107	✓✗✗✓	3752	if (i < 0 \|\| i >= (int)len)
108			fatal("xsnprintf: overflow");
109
110		1876	return i;
111		1876	}