This is my modified.
I tried to modify the Makefile, but my limited level, think of ways to
modify later.
----------------------------------- tccgen.c
-----------------------------------
index 7906ccf..4f2a02c 100644
@@ -2562,6 +2562,8 @@ ST_FUNC void vstore(void)
/* leave source on stack */
} else if (ft & VT_BITFIELD) {
/* bitfield store handling */
+ SValue tmp;
+ tmp = vtop[0];
bit_pos = (ft >> VT_STRUCT_SHIFT) & 0x3f;
bit_size = (ft >> (VT_STRUCT_SHIFT + 6)) & 0x3f;
/* remove bit field info to avoid loops */
@@ -2598,6 +2600,8 @@ ST_FUNC void vstore(void)
gen_op('|');
/* store result */
vstore();
+ vtop--;
+ vpushv(&tmp);
} else {
#ifdef CONFIG_TCC_BCHECK
/* bound check case */
index 22a8278..2fd4614 100644
@@ -1655,6 +1655,15 @@ void bitfield_test(void)
else
printf("st1.f2 != -1\n");
+ /* XXX: gcc bug
+ st1.f1 = st1.f2 = st1.f3 = st1.f4 = st1.f5 = 3;
+ printf("%d %d %d %d %d\n",
+ st1.f1, st1.f2, st1.f3, st1.f4, st1.f5);
+*/
+ st1.f2 = st1.f3 = st1.f4 = st1.f5 = 3;
+ printf("%d %d %d %d %d\n",
+ st1.f2, st1.f3, st1.f4, st1.f5);
+
/* bit sizes below must be bigger than 32 since GCC doesn't allow
long-long bitfields whose size is not bigger than int */
struct sbf2 {
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