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diff --git a/lib/libc/stdio/vfscanf.c b/lib/libc/stdio/vfscanf.c
--- a/lib/libc/stdio/vfscanf.c
+++ b/lib/libc/stdio/vfscanf.c
@@ -452,7 +452,7 @@
} else if (state == haveprefix) {
p--;
(void) __ungetc(c, fp);
- } else if (c != EOF) {
+ } else if (width && c != EOF) {
(void) __ungetc(c, fp);
}
return (p - buf);
diff --git a/lib/libc/stdio/vfwscanf.c b/lib/libc/stdio/vfwscanf.c
--- a/lib/libc/stdio/vfwscanf.c
+++ b/lib/libc/stdio/vfwscanf.c
@@ -435,7 +435,7 @@
} else if (state == haveprefix) {
wcp--;
__ungetwc(c, fp, locale);
- } else if (c != WEOF) {
+ } else if (width && c != WEOF) {
__ungetwc(c, fp, locale);
}
return (wcp - buf);
diff --git a/lib/libc/tests/stdio/sscanf_test.c b/lib/libc/tests/stdio/sscanf_test.c
--- a/lib/libc/tests/stdio/sscanf_test.c
+++ b/lib/libc/tests/stdio/sscanf_test.c
@@ -237,6 +237,22 @@
}
}
+/*
+ * Test termination cases: non-numeric character, fixed width, EOF
+ */
+ATF_TC_WITHOUT_HEAD(sscanf_termination);
+ATF_TC_BODY(sscanf_termination, tc)
+{
+ int a = 0, b = 0, c = 0;
+ char d = 0;
+
+ ATF_CHECK_EQ(4, sscanf("3.1415", "%d%c%2d%d", &a, &d, &b, &c));
+ ATF_CHECK_EQ(3, a);
+ ATF_CHECK_EQ(14, b);
+ ATF_CHECK_EQ(15, c);
+ ATF_CHECK_EQ('.', d);
+}
+
ATF_TP_ADD_TCS(tp)
{
setlocale(LC_NUMERIC, "en_US.UTF-8");
@@ -245,5 +261,6 @@
ATF_TP_ADD_TC(tp, sscanf_d);
ATF_TP_ADD_TC(tp, sscanf_x);
ATF_TP_ADD_TC(tp, sscanf_i);
+ ATF_TP_ADD_TC(tp, sscanf_termination);
return (atf_no_error());
}
diff --git a/lib/libc/tests/stdio/swscanf_test.c b/lib/libc/tests/stdio/swscanf_test.c
--- a/lib/libc/tests/stdio/swscanf_test.c
+++ b/lib/libc/tests/stdio/swscanf_test.c
@@ -238,6 +238,22 @@
}
}
+/*
+ * Test termination cases: non-numeric character, fixed width, EOF
+ */
+ATF_TC_WITHOUT_HEAD(swscanf_termination);
+ATF_TC_BODY(swscanf_termination, tc)
+{
+ int a = 0, b = 0, c = 0;
+ char d = 0;
+
+ ATF_CHECK_EQ(4, swscanf(L"3.1415", L"%d%c%2d%d", &a, &d, &b, &c));
+ ATF_CHECK_EQ(3, a);
+ ATF_CHECK_EQ(14, b);
+ ATF_CHECK_EQ(15, c);
+ ATF_CHECK_EQ(L'.', d);
+}
+
ATF_TP_ADD_TCS(tp)
{
setlocale(LC_NUMERIC, "en_US.UTF-8");
@@ -246,5 +262,6 @@
ATF_TP_ADD_TC(tp, swscanf_d);
ATF_TP_ADD_TC(tp, swscanf_x);
ATF_TP_ADD_TC(tp, swscanf_i);
+ ATF_TP_ADD_TC(tp, swscanf_termination);
return (atf_no_error());
}

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