wordexp(): Remove wrong IFS usage.

Words in shell script are separated by spaces or tabs independent of the
value of IFS. The value of IFS is only relevant for the result of
substitutions. Therefore, there should be a space between 'wordexp' and the
words to be expanded, not an IFS character.

Paranoia might dictate that the shell ignore IFS from the environment (even
though our sh currently uses it), so do not depend on it in the new test
case.

1 files changed, 19 insertions, 0 deletions

diff --git a/tools/regression/lib/libc/gen/test-wordexp.c b/tools/regression/lib/libc/gen/test-wordexp.c
index df8f885..d94f870 100644
--- a/tools/regression/lib/libc/gen/test-wordexp.c
+++ b/tools/regression/lib/libc/gen/test-wordexp.c
@@ -208,6 +208,25 @@ main(int argc, char *argv[])
 	assert(strcmp(we.we_wordv[1], "world") == 0);
 	assert(we.we_wordv[2] == NULL);
 	wordfree(&we);
+	sa.sa_handler = SIG_DFL;
+	r = sigaction(SIGCHLD, &sa, NULL);
+	assert(r == 0);
+
+	/*
+	 * With IFS set to a non-default value (without depending on whether
+	 * IFS is inherited or not).
+	 */
+	r = setenv("IFS", ":", 1);
+	assert(r == 0);
+	r = wordexp("hello world", &we, 0);
+	assert(r == 0);
+	assert(we.we_wordc == 2);
+	assert(strcmp(we.we_wordv[0], "hello") == 0);
+	assert(strcmp(we.we_wordv[1], "world") == 0);
+	assert(we.we_wordv[2] == NULL);
+	wordfree(&we);
+	r = unsetenv("IFS");
+	assert(r == 0);
 
 	printf("PASS wordexp()\n");
 	printf("PASS wordfree()\n");