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Moved and improved test cases for Issue #1462.

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Fixed an old test case for unsigned enum bit-fields that are supposed to be int-promoted.
This commit is contained in:
acqn
2021-05-27 15:44:52 +08:00
committed by Oliver Schmidt
parent 5adb29ce31
commit d69e81cd66
5 changed files with 122 additions and 18 deletions
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37
test/val/enum-bitfield.c
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@@ -23,6 +23,7 @@
*/
#include <stdio.h>
#include <limits.h>
static unsigned char failures = 0;
@@ -35,7 +36,7 @@ enum e10u {
static struct enum_bitfield_uint {
enum e10u x : 1;
enum e10u y : 8;
enum e10u z : 16;
enum e10u z : CHAR_BIT * sizeof (enum e10u);
} e10ubf = {0, E10U_200, E10U_1000};
static void test_enum_bitfield_uint(void)
@@ -68,11 +69,11 @@ static void test_enum_bitfield_uint(void)
failures++;
}
/* Check signedness, should be unsigned. */
/* Check signedness, should be signed. */
{
long v = e10ubf.x - 2;
if (v < 0) {
printf ("Got negative v = %ld, expected large positive.\n", v);
if (v >= 0) {
printf ("Got non-negative v (= e10ubf.x - 2) = %ld, expected negative.\n", v);
failures++;
}
}
@@ -85,6 +86,15 @@ static void test_enum_bitfield_uint(void)
printf ("Got e10ubf.z = %u, expected 1023.\n", e10ubf.z);
failures++;
}
/* Check signedness, should be unsigned. */
{
long v = e10ubf.z - 1024;
if (v < 0) {
printf ("Got negative v (= e10ubf.z - 1024) = %ld, expected positive.\n", v);
failures++;
}
}
}
/* Enum with underlying type signed int. */
@@ -97,7 +107,7 @@ enum e11i {
static struct enum_bitfield_int {
enum e11i x : 2;
enum e11i y : 8;
enum e11i z : 16;
enum e11i z : CHAR_BIT * sizeof (enum e11i);
} e11ibf = {E11I_M1, E11I_100, E11I_1000};
static void test_enum_bitfield_int(void)
@@ -133,8 +143,8 @@ static void test_enum_bitfield_int(void)
/* Check signedness, should be signed. */
{
long v = e11ibf.x - 2;
if (v > 0) {
printf ("Got positive v = %ld, expected negative.\n", v);
if (v >= 0) {
printf ("Got non-negative v (= e11ibf.x - 2) = %ld, expected negative.\n", v);
failures++;
}
}
@@ -147,6 +157,15 @@ static void test_enum_bitfield_int(void)
printf ("Got e11ibf.z = %d, expected 1023.\n", e11ibf.z);
failures++;
}
/* Check signedness, should be signed. */
{
long v = e11ibf.z - 1024;
if (v >= 0) {
printf ("Got non-negative v (= e11ibf.z - 1024) = %ld, expected negative.\n", v);
failures++;
}
}
}
/* Enum with underlying type unsigned char. */
@@ -157,7 +176,7 @@ enum e7uc {
static struct enum_bitfield_uchar {
enum e7uc x : 1;
enum e7uc y : 4;
enum e7uc z : 8;
enum e7uc z : CHAR_BIT;
} e7ucbf = {0, 10, E7UC_100};
static void test_enum_bitfield_uchar(void)
@@ -212,7 +231,7 @@ enum e8sc {
static struct enum_bitfield_char {
enum e8sc x : 1;
enum e8sc y : 4;
enum e8sc z : 8;
enum e8sc z : CHAR_BIT;
} e8scbf = {0, 5, E8SC_100};
static void test_enum_bitfield_char(void)