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avoid compiler warnings

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This commit is contained in:
Matthew Flatt 2014-09-05 19:06:02 -06:00
parent 33e97745e9
commit 79f7a642e1
1 changed files with 11 additions and 4 deletions
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15
racket/src/racket/sgc/sgc.c
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@ -547,6 +547,7 @@ typedef struct BlockOfMemory {
# define ALL_FREE 0xAA
# define _NOT_FREE(x) NOT_FREE(x)
# define WHEN_FREE_BIT(x) x
# define SHIFT_UNMARK_TO_FREE(x) ((x & ALL_UNMARKED) << 1)
# define SHIFT_COPY_FREE_TO_UNMARKED(x) ((x & ALL_FREE) | ((x & ALL_FREE) >> 1))
@ -567,6 +568,7 @@ typedef struct BlockOfMemory {
# define ALL_UNMARKED 0xFF
# define _NOT_FREE(x) 1
# define WHEN_FREE_BIT(x) /* void */
#endif /* DISTINGUISH_FREE_FROM_UNMARKED */
@ -3942,11 +3944,11 @@ static void push_uncollectable_common(BlockOfMemory **blocks, GC_Set *set)
for (j = 0; start < top; start += size, j++) {
int bit;
int pos;
int fbit;
WHEN_FREE_BIT(int fbit);
pos = POS_TO_UNMARK_INDEX(j);
bit = POS_TO_UNMARK_BIT(j);
fbit = POS_TO_FREE_BIT(j);
WHEN_FREE_BIT(fbit = POS_TO_FREE_BIT(j));
if (NOT_MARKED(block->free[pos] & bit)
&& _NOT_FREE(block->free[pos] & fbit)) {
@ -4055,12 +4057,13 @@ static void mark_common_for_finalizations(BlockOfMemory **blocks, int atomic)
/* If not eager, mark data reachable from finalized block: */
if (!fn->eager_level) {
int pos, apos;
int bit, fbit;
int bit;
WHEN_FREE_BIT(int fbit);
pos = fn->u.pos;
apos = POS_TO_UNMARK_INDEX(pos);
bit = POS_TO_UNMARK_BIT(pos);
fbit = POS_TO_FREE_BIT(pos);
WHEN_FREE_BIT(fbit = POS_TO_FREE_BIT(pos));
if (NOT_MARKED(block->free[apos] & bit)
&& _NOT_FREE(block->free[apos] & fbit)) {
@ -4468,7 +4471,9 @@ static intptr_t last_gc_end;
static void do_GC_gcollect(void *stack_now)
{
# if PRINT
intptr_t root_marked;
#endif
int j;
#if PRINT_INFO_PER_GC
@ -4632,7 +4637,9 @@ static void do_GC_gcollect(void *stack_now)
collect_trace_count = 0;
# endif
# if PRINT
root_marked = mem_use;
# endif
PRINTTIME((STDERR, "gc: stack push start: %ld\n", GETTIMEREL()));