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Adding Defensive Coding book

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Eric Christensen 2013-03-11 18:11:16 -04:00
parent 3623943843
commit 1fbfdb89d1
754 changed files with 60855 additions and 0 deletions
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21
defensive-coding/en-US/C/snippets/Arithmetic-add.xml Normal file
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<?xml version='1.0' encoding='utf-8' ?>
<!DOCTYPE programlisting PUBLIC "-//OASIS//DTD DocBook XML V4.5//EN" "http://www.oasis-open.org/docbook/xml/4.5/docbookx.dtd" [
]>
<!-- Automatically generated file. Do not edit. -->
<programlisting language="C">
void report_overflow(void);
int
add(int a, int b)
{
int result = a + b;
if (a &#60; 0 || b &#60; 0) {
return -1;
}
// The compiler can optimize away the following if statement.
if (result &#60; 0) {
report_overflow();
}
return result;
}
</programlisting>

14
defensive-coding/en-US/C/snippets/Arithmetic-mult.xml Normal file
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<?xml version='1.0' encoding='utf-8' ?>
<!DOCTYPE programlisting PUBLIC "-//OASIS//DTD DocBook XML V4.5//EN" "http://www.oasis-open.org/docbook/xml/4.5/docbookx.dtd" [
]>
<!-- Automatically generated file. Do not edit. -->
<programlisting language="C">
unsigned
mul(unsigned a, unsigned b)
{
if (b &#38;&#38; a &#62; ((unsigned)-1) / b) {
report_overflow();
}
return a * b;
}
</programlisting>

49
defensive-coding/en-US/C/snippets/Pointers-remaining.xml Normal file
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<?xml version='1.0' encoding='utf-8' ?>
<!DOCTYPE programlisting PUBLIC "-//OASIS//DTD DocBook XML V4.5//EN" "http://www.oasis-open.org/docbook/xml/4.5/docbookx.dtd" [
]>
<!-- Automatically generated file. Do not edit. -->
<programlisting language="C">
ssize_t
extract_strings(const char *in, size_t inlen, char **out, size_t outlen)
{
const char *inp = in;
const char *inend = in + inlen;
char **outp = out;
char **outend = out + outlen;
while (inp != inend) {
size_t len;
char *s;
if (outp == outend) {
errno = ENOSPC;
goto err;
}
len = (unsigned char)*inp;
++inp;
if (len &#62; (size_t)(inend - inp)) {
errno = EINVAL;
goto err;
}
s = malloc(len + 1);
if (s == NULL) {
goto err;
}
memcpy(s, inp, len);
inp += len;
s[len] = '\0';
*outp = s;
++outp;
}
return outp - out;
err:
{
int errno_old = errno;
while (out != outp) {
free(*out);
++out;
}
errno = errno_old;
}
return -1;
}
</programlisting>

18
defensive-coding/en-US/C/snippets/String-Functions-format.xml Normal file
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<?xml version='1.0' encoding='utf-8' ?>
<!DOCTYPE programlisting PUBLIC "-//OASIS//DTD DocBook XML V4.5//EN" "http://www.oasis-open.org/docbook/xml/4.5/docbookx.dtd" [
]>
<!-- Automatically generated file. Do not edit. -->
<programlisting language="C">
void log_format(const char *format, ...) __attribute__((format(printf, 1, 2)));
void
log_format(const char *format, ...)
{
char buf[1000];
va_list ap;
va_start(ap, format);
vsnprintf(buf, sizeof(buf), format, ap);
va_end(ap);
log_string(buf);
}
</programlisting>

8
defensive-coding/en-US/C/snippets/String-Functions-snprintf.xml Normal file
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<?xml version='1.0' encoding='utf-8' ?>
<!DOCTYPE programlisting PUBLIC "-//OASIS//DTD DocBook XML V4.5//EN" "http://www.oasis-open.org/docbook/xml/4.5/docbookx.dtd" [
]>
<!-- Automatically generated file. Do not edit. -->
<programlisting language="C">
char fraction[30];
snprintf(fraction, sizeof(fraction), "%d/%d", numerator, denominator);
</programlisting>

9
defensive-coding/en-US/C/snippets/String-Functions-strncpy.xml Normal file
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<?xml version='1.0' encoding='utf-8' ?>
<!DOCTYPE programlisting PUBLIC "-//OASIS//DTD DocBook XML V4.5//EN" "http://www.oasis-open.org/docbook/xml/4.5/docbookx.dtd" [
]>
<!-- Automatically generated file. Do not edit. -->
<programlisting language="C">
char buf[10];
strncpy(buf, data, sizeof(buf));
buf[sizeof(buf) - 1] = '\0';
</programlisting>