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-rw-r--r--erts/doc/src/erlang.xml28
-rw-r--r--erts/emulator/sys/unix/sys.c4
2 files changed, 27 insertions, 5 deletions
diff --git a/erts/doc/src/erlang.xml b/erts/doc/src/erlang.xml
index 950a5fe189..b0d25389fd 100644
--- a/erts/doc/src/erlang.xml
+++ b/erts/doc/src/erlang.xml
@@ -516,7 +516,14 @@ Z = erlang:adler32_combine(X,Y,iolist_size(Data2)).</code>
<desc>
<p>Returns an Erlang term that is the result of decoding
binary object <c><anno>Binary</anno></c>, which must be encoded
- according to the Erlang external term format.</p>
+ according to the <seealso marker="erts:erl_ext_dist">
+ Erlang external term format</seealso>.</p>
+ <pre>
+> <input>Bin = term_to_binary(hello).</input>
+&lt;&lt;131,100,0,5,104,101,108,108,111>>
+> <input>hello = binary_to_term(Bin).</input>
+hello
+</pre>
<warning>
<p>When decoding binaries from untrusted sources,
consider using <c>binary_to_term/2</c> to prevent Denial
@@ -555,6 +562,14 @@ Z = erlang:adler32_combine(X,Y,iolist_size(Data2)).</code>
</taglist>
<p>Failure: <c>badarg</c> if <c>safe</c> is specified and unsafe
data is decoded.</p>
+ <pre>
+> <input>binary_to_term(&lt;&lt;131,100,0,5,104,101,108,108,111>>, [safe]).</input>
+** exception error: bad argument
+> <input>hello.</input>
+hello
+> <input>binary_to_term(&lt;&lt;131,100,0,5,104,101,108,108,111>>, [safe]).</input>
+hello
+</pre>
<p>See also
<seealso marker="#term_to_binary/1"><c>term_to_binary/1</c></seealso>,
<seealso marker="#binary_to_term/1">
@@ -8599,12 +8614,19 @@ ok
</fsummary>
<desc>
<p>Returns a binary data object that is the result of encoding
- <c><anno>Term</anno></c> according to the Erlang external
- term format.</p>
+ <c><anno>Term</anno></c> according to the
+ <seealso marker="erts:erl_ext_dist">Erlang external
+ term format.</seealso></p>
<p>This can be used for various purposes, for example,
writing a term to a file in an efficient way, or sending an
Erlang term to some type of communications channel not
supported by distributed Erlang.</p>
+ <pre>
+> <input>Bin = term_to_binary(hello).</input>
+&lt;&lt;131,100,0,5,104,101,108,108,111>>
+> <input>hello = binary_to_term(Bin).</input>
+hello
+</pre>
<p>See also <seealso marker="#binary_to_term/1">
<c>binary_to_term/1</c></seealso>.</p>
</desc>
diff --git a/erts/emulator/sys/unix/sys.c b/erts/emulator/sys/unix/sys.c
index 089efec3e8..b0e623a5b9 100644
--- a/erts/emulator/sys/unix/sys.c
+++ b/erts/emulator/sys/unix/sys.c
@@ -715,13 +715,13 @@ static RETSIGTYPE suspend_signal(void)
static RETSIGTYPE suspend_signal(int signum)
#endif
{
- int res, buf[1], __errno = errno;
+ int res, buf[1], tmp_errno = errno;
do {
res = read(sig_suspend_fds[0], buf, sizeof(int));
} while (res < 0 && errno == EINTR);
/* restore previous errno in case read changed it */
- errno = __errno;
+ errno = tmp_errno;
}
#endif /* #ifdef ERTS_SYS_SUSPEND_SIGNAL */