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Fixed constness of bit-fields.

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This commit is contained in:
acqn 2023-11-29 12:27:01 +08:00
parent 5537b61e6a
commit 6434176909
4 changed files with 19 additions and 4 deletions
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4
src/cc65/datatype.c
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@ -497,8 +497,8 @@ Type* NewPointerTo (const Type* T)
Type* NewBitFieldOf (const Type* T, unsigned BitOffs, unsigned BitWidth) Type* NewBitFieldOf (const Type* T, unsigned BitOffs, unsigned BitWidth)
/* Return a type string that is "T : BitWidth" aligned on BitOffs. The type /* Return a type string that is "unqualified T : BitWidth" aligned on BitOffs.
** string is allocated on the heap and may be freed after use. ** The type string is allocated on the heap and may be freed after use.
*/ */
{ {
Type* P; Type* P;

4
src/cc65/datatype.h
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@ -435,8 +435,8 @@ Type* NewPointerTo (const Type* T);
*/ */
Type* NewBitFieldOf (const Type* T, unsigned BitOffs, unsigned BitWidth); Type* NewBitFieldOf (const Type* T, unsigned BitOffs, unsigned BitWidth);
/* Return a type string that is "T : BitWidth" aligned on BitOffs. The type /* Return a type string that is "unqualified T : BitWidth" aligned on BitOffs.
** string is allocated on the heap and may be freed after use. ** The type string is allocated on the heap and may be freed after use.
*/ */
const Type* AddressOf (const Type* T); const Type* AddressOf (const Type* T);

1
src/cc65/symtab.c
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@ -1023,6 +1023,7 @@ SymEntry* AddBitField (const char* Name, const Type* T, unsigned Offs,
} else { } else {
Entry->Type = NewBitFieldOf (T, BitOffs, BitWidth); Entry->Type = NewBitFieldOf (T, BitOffs, BitWidth);
} }
Entry->Type[0].C |= GetQualifier (T) & T_MASK_QUAL;
/* Add the entry to the symbol table */ /* Add the entry to the symbol table */
AddSymEntry (FieldTab, Entry); AddSymEntry (FieldTab, Entry);

14
test/err/bug2018-bitfield.c Normal file
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@ -0,0 +1,14 @@
/* Bug #2018 - Compiler has problems with const struct fields */
typedef union U {
int a : 16;
const int b : 16;
} U;
int main(void)
{
U x = { 42 };
x.b = 0;
return 0;
}