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GCC Code Coverage Report

Directory:	./		Exec	Total	Coverage
File:	usr.bin/tmux/xmalloc.c	Lines:	33	50	66.0 %
Date:	2017-11-07	Branches:	12	26	46.2 %


/* $OpenBSD: xmalloc.c,v 1.11 2016/11/17 10:06:08 nicm 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 fatalx 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 "tmux.h"

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

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

void *
xrealloc(void *ptr, size_t size)
{
	return xreallocarray(ptr, 1, size);
}

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

	if (nmemb == 0 || size == 0)
		fatalx("xreallocarray: zero size");
	new_ptr = reallocarray(ptr, nmemb, size);
	if (new_ptr == NULL)
		fatalx("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)
		fatalx("xstrdup: %s", strerror(errno));
	return cp;
}

char *
xstrndup(const char *str, size_t maxlen)
{
	char *cp;

	if ((cp = strndup(str, maxlen)) == NULL)
		fatalx("xstrndup: %s", strerror(errno));
	return cp;
}

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

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

	return i;
}

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

	i = vasprintf(ret, fmt, ap);

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

	return i;
}

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

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

	return i;
}

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

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

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

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

	return i;
}


Generated by: GCOVR (Version 3.3)

Line	Branch	Exec	Source
1			/* $OpenBSD: xmalloc.c,v 1.11 2016/11/17 10:06:08 nicm Exp $ */
2
3			/*
4			* Author: Tatu Ylonen <ylo@cs.hut.fi>
5			* Copyright (c) 1995 Tatu Ylonen <ylo@cs.hut.fi>, Espoo, Finland
6			* All rights reserved
7			* Versions of malloc and friends that check their results, and never return
8			* failure (they call fatalx if they encounter an error).
9			*
10			* As far as I am concerned, the code I have written for this software
11			* can be used freely for any purpose. Any derived versions of this
12			* software must be clearly marked as such, and if the derived work is
13			* incompatible with the protocol description in the RFC file, it must be
14			* called by a name other than "ssh" or "Secure Shell".
15			*/
16
17			#include <errno.h>
18			#include <limits.h>
19			#include <stdint.h>
20			#include <stdio.h>
21			#include <stdlib.h>
22			#include <string.h>
23
24			#include "tmux.h"
25
26			void *
27			xmalloc(size_t size)
28			{
29			void *ptr;
30
31	✗✓	176	if (size == 0)
32			fatalx("xmalloc: zero size");
33		88	ptr = malloc(size);
34	✗✓	88	if (ptr == NULL)
35			fatalx("xmalloc: allocating %zu bytes: %s",
36			size, strerror(errno));
37		88	return ptr;
38			}
39
40			void *
41			xcalloc(size_t nmemb, size_t size)
42			{
43			void *ptr;
44
45	✗✓	1660	if (size == 0 \|\| nmemb == 0)
46			fatalx("xcalloc: zero size");
47		830	ptr = calloc(nmemb, size);
48	✗✓	830	if (ptr == NULL)
49			fatalx("xcalloc: allocating %zu * %zu bytes: %s",
50			nmemb, size, strerror(errno));
51		830	return ptr;
52			}
53
54			void *
55			xrealloc(void *ptr, size_t size)
56			{
57			return xreallocarray(ptr, 1, size);
58			}
59
60			void *
61			xreallocarray(void *ptr, size_t nmemb, size_t size)
62			{
63			void *new_ptr;
64
65	✗✓	180	if (nmemb == 0 \|\| size == 0)
66			fatalx("xreallocarray: zero size");
67		90	new_ptr = reallocarray(ptr, nmemb, size);
68	✗✓	90	if (new_ptr == NULL)
69			fatalx("xreallocarray: allocating %zu * %zu bytes: %s",
70			nmemb, size, strerror(errno));
71		90	return new_ptr;
72			}
73
74			char *
75			xstrdup(const char *str)
76			{
77			char *cp;
78
79	✗✓	2284	if ((cp = strdup(str)) == NULL)
80			fatalx("xstrdup: %s", strerror(errno));
81		1142	return cp;
82			}
83
84			char *
85			xstrndup(const char *str, size_t maxlen)
86			{
87			char *cp;
88
89			if ((cp = strndup(str, maxlen)) == NULL)
90			fatalx("xstrndup: %s", strerror(errno));
91			return cp;
92			}
93
94			int
95			xasprintf(char *ret, const char fmt, ...)
96			{
97		28	va_list ap;
98			int i;
99
100		14	va_start(ap, fmt);
101		14	i = xvasprintf(ret, fmt, ap);
102		14	va_end(ap);
103
104		14	return i;
105		14	}
106
107			int
108			xvasprintf(char *ret, const char fmt, va_list ap)
109			{
110			int i;
111
112		204	i = vasprintf(ret, fmt, ap);
113
114	✓✗✗✓	204	if (i < 0 \|\| *ret == NULL)
115			fatalx("xasprintf: %s", strerror(errno));
116
117		102	return i;
118			}
119
120			int
121			xsnprintf(char str, size_t len, const char fmt, ...)
122			{
123		2	va_list ap;
124			int i;
125
126		1	va_start(ap, fmt);
127		1	i = xvsnprintf(str, len, fmt, ap);
128		1	va_end(ap);
129
130		1	return i;
131		1	}
132
133			int
134			xvsnprintf(char str, size_t len, const char fmt, va_list ap)
135			{
136			int i;
137
138	✗✓	2	if (len > INT_MAX)
139			fatalx("xsnprintf: len > INT_MAX");
140
141		1	i = vsnprintf(str, len, fmt, ap);
142
143	✓✗✗✓	2	if (i < 0 \|\| i >= (int)len)
144			fatalx("xsnprintf: overflow");
145
146		1	return i;
147			}