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maint: xfdopen, and scope reduction.

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* src/files.h, src/files.c (xfdopen): New.
* src/output.c (output_skeleton): Use it.
Reduce the scope of argv.
This commit is contained in:
Akim Demaille
2012-06-15 11:56:13 +02:00
parent aed41cf9a0
commit 22539284f3
3 changed files with 18 additions and 13 deletions
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19
src/output.c
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@@ -571,7 +571,6 @@ static void
output_skeleton (void)
{
int filter_fd[2];
char const *argv[10];
pid_t pid;
/* Compute the names of the package data dir and skeleton files. */
@@ -602,6 +601,7 @@ output_skeleton (void)
<http://lists.gnu.org/archive/html/bug-bison/2008-07/msg00000.html>
for details. */
{
char const *argv[10];
int i = 0;
argv[i++] = m4;
@@ -627,11 +627,12 @@ output_skeleton (void)
argv[i++] = skel;
argv[i++] = NULL;
aver (i <= ARRAY_CARDINALITY (argv));
/* The ugly cast is because gnulib gets the const-ness wrong. */
pid = create_pipe_bidi ("m4", m4, (char **)(void*)argv, false, true,
true, filter_fd);
}
/* The ugly cast is because gnulib gets the const-ness wrong. */
pid = create_pipe_bidi ("m4", m4, (char **)(void*)argv, false, true,
true, filter_fd);
free (m4sugar);
free (m4bison);
free (skel);
@@ -639,10 +640,7 @@ output_skeleton (void)
if (trace_flag & trace_muscles)
muscles_output (stderr);
{
FILE *out = fdopen (filter_fd[1], "w");
if (! out)
error (EXIT_FAILURE, get_errno (),
"fdopen");
FILE *out = xfdopen (filter_fd[1], "w");
muscles_output (out);
xfclose (out);
}
@@ -650,10 +648,7 @@ output_skeleton (void)
/* Read and process m4's output. */
timevar_push (TV_M4);
{
FILE *in = fdopen (filter_fd[0], "r");
if (! in)
error (EXIT_FAILURE, get_errno (),
"fdopen");
FILE *in = xfdopen (filter_fd[0], "r");
scan_skel (in);
/* scan_skel should have read all of M4's output. Otherwise, when we
close the pipe, we risk letting M4 report a broken-pipe to the