tcc: Don't require a journal or a results directory

When the user passes an empty string for the journal argument (-j) or
the results directory argument (-i), don't create them. This allows tcc
to be run in more of a single shot mode since the logging is still done
in the tet_xres file.

The fullpath() code has been modified to use the current directory when
the argument is NULL since it is sometimes called with the results
directory name.

4 files changed, 30 insertions, 2 deletions

diff --git a/src/tet3/tcc/journal.c b/src/tet3/tcc/journal.c
index 0bddb168..92a75cab 100644
--- a/src/tet3/tcc/journal.c
+++ b/src/tet3/tcc/journal.c
@@ -143,6 +143,13 @@ char *jopt, *cwd;
 	TRACE3(tet_Ttcc, 2, "jnl_init(): jopt = \"%s\", cwd = \"%s\"",
 		jopt ? jopt : "", cwd);
 
+	/* Empty string means no journal file */
+	if (jopt && !*jopt) {
+		jfp = NULL;
+		jfname = NULL;
+		return;
+	}
+
 	/* determine the name of the journal file */
 	if (jopt && *jopt)
 		fullpath(cwd, jopt, fname, sizeof fname, 0);
@@ -934,6 +941,9 @@ FILE *fp;
 	int len0, len1, len2, s2max;
 	char msg[TET_JNL_LEN];
 
+	if (!fp)
+		return;
+
 	if (!s1)
 		s1 = nullstr;
 	if (!s2)
diff --git a/src/tet3/tcc/resdir.c b/src/tet3/tcc/resdir.c
index c7942b66..c744b484 100644
--- a/src/tet3/tcc/resdir.c
+++ b/src/tet3/tcc/resdir.c
@@ -73,6 +73,12 @@ char *iopt, *cwd;
 	char resroot[MAXPATH], resdir[MAXPATH];
 	int n, rc;
 
+	/* Empty string means no results directory. */
+	if (iopt && !*iopt) {
+		results_dir = NULL;
+		return;
+	}
+
 	/*
 	** determine the name of the results directory
 	**
@@ -108,7 +114,8 @@ char *iopt, *cwd;
 
 char *resdirname()
 {
-	ASSERT(results_dir && isabspathloc(results_dir));
+	if (results_dir)
+		ASSERT(isabspathloc(results_dir));
 	return(results_dir);
 }
 
diff --git a/src/tet3/tcc/tcc.c b/src/tet3/tcc/tcc.c
index 5b07457e..a3071c36 100644
--- a/src/tet3/tcc/tcc.c
+++ b/src/tet3/tcc/tcc.c
@@ -484,7 +484,8 @@ char **argv;
 
 	/* open the journal file and write the start messages to it */
 	jnl_init(jopt, cwd);
-	(void) printf("%s: journal file is %s\n", tet_progname, jnl_jfname());
+	if (jnl_jfname())
+		printf("%s: journal file is %s\n", tet_progname, jnl_jfname());
 	(void) fflush(stdout);
 	jnl_tcc_start(argcsave, argvsave);
 	jnl_uname();
diff --git a/src/tet3/tcc/utils.c b/src/tet3/tcc/utils.c
index 7555b193..b984e2d2 100644
--- a/src/tet3/tcc/utils.c
+++ b/src/tet3/tcc/utils.c
@@ -47,6 +47,7 @@ MODIFICATIONS:
 #include <time.h>
 #include <ctype.h>
 #include <string.h>
+#include <errno.h>
 #include "dtmac.h"
 #include "error.h"
 #include "globals.h"
@@ -224,6 +225,15 @@ int pathlen, remote;
 
 	ASSERT(file && *file);
 
+	/* Use the current directory if none specified */
+	if (!dir) {
+		char cwd[MAXPATH];
+
+		errno = 0;
+		if (!GETCWD(cwd, MAXPATH))
+			fatal(errno, "getcwd() failed", NULL);
+		dir = cwd;
+	}
 
 	if (
 		(remote && !isabspathrem(file)) ||