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authorSverker Eriksson <[email protected]>2014-12-02 17:37:13 +0100
committerSverker Eriksson <[email protected]>2014-12-02 17:37:13 +0100
commitb3e52c026ce4920e1a4e36ef98e5de94666e91ef (patch)
treeacd32450496744ade5043d8b56cb32b5f3dae1c2
parentc0067390b80f015a0342284505543d099b9e20e6 (diff)
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erts: Add compile time assert ERTS_CT_ASSERT
and usage
-rw-r--r--erts/emulator/beam/beam_emu.c2
-rw-r--r--erts/emulator/beam/erl_alloc.c2
-rw-r--r--erts/emulator/beam/erl_alloc_util.c6
-rw-r--r--erts/emulator/beam/erl_gc.c18
-rw-r--r--erts/emulator/beam/erl_instrument.c2
-rw-r--r--erts/emulator/beam/erl_mtrace.c2
-rw-r--r--erts/emulator/beam/erl_printf_term.c2
-rw-r--r--erts/emulator/beam/erl_process.c3
-rw-r--r--erts/emulator/beam/erl_trace.c2
-rw-r--r--erts/emulator/beam/io.c4
-rw-r--r--erts/emulator/beam/sys.h16
-rw-r--r--erts/emulator/drivers/common/inet_drv.c6
12 files changed, 40 insertions, 25 deletions
diff --git a/erts/emulator/beam/beam_emu.c b/erts/emulator/beam/beam_emu.c
index e9f5fd798b..3af7c43abf 100644
--- a/erts/emulator/beam/beam_emu.c
+++ b/erts/emulator/beam/beam_emu.c
@@ -5142,7 +5142,7 @@ get_map_elements_fail:
#ifndef NO_JUMP_TABLE
#ifdef ERTS_OPCODE_COUNTER_SUPPORT
/* Are tables correctly generated by beam_makeops? */
- ASSERT(sizeof(counting_opcodes) == sizeof(opcodes));
+ ERTS_CT_ASSERT(sizeof(counting_opcodes) == sizeof(opcodes));
#ifdef DEBUG
counting_opcodes[op_catch_end_y] = LabelAddr(lb_catch_end_y);
#endif
diff --git a/erts/emulator/beam/erl_alloc.c b/erts/emulator/beam/erl_alloc.c
index 90cd227fae..f2bceff4eb 100644
--- a/erts/emulator/beam/erl_alloc.c
+++ b/erts/emulator/beam/erl_alloc.c
@@ -3939,7 +3939,7 @@ static Uint
install_debug_functions(void)
{
int i;
- ASSERT(sizeof(erts_allctrs) == sizeof(real_allctrs));
+ ERTS_CT_ASSERT(sizeof(erts_allctrs) == sizeof(real_allctrs));
sys_memcpy((void *)real_allctrs,(void *)erts_allctrs,sizeof(erts_allctrs));
diff --git a/erts/emulator/beam/erl_alloc_util.c b/erts/emulator/beam/erl_alloc_util.c
index e3172dc4fb..2f277690e4 100644
--- a/erts/emulator/beam/erl_alloc_util.c
+++ b/erts/emulator/beam/erl_alloc_util.c
@@ -1442,7 +1442,7 @@ get_pref_allctr(void *extra)
pref_ix = ERTS_ALC_GET_THR_IX();
- ASSERT(sizeof(UWord) == sizeof(Allctr_t *));
+ ERTS_CT_ASSERT(sizeof(UWord) == sizeof(Allctr_t *));
ASSERT(0 <= pref_ix && pref_ix < tspec->size);
return tspec->allctr[pref_ix];
@@ -1861,7 +1861,7 @@ handle_delayed_dealloc(Allctr_t *allctr,
* if this carrier is pulled from dc_list by cpool_fetch()
*/
ERTS_ALC_CPOOL_ASSERT(FBLK_TO_MBC(blk) != crr);
- ERTS_ALC_CPOOL_ASSERT(sizeof(ErtsAllctrDDBlock_t) == sizeof(void*));
+ ERTS_CT_ASSERT(sizeof(ErtsAllctrDDBlock_t) == sizeof(void*));
#ifdef MBC_ABLK_OFFSET_BITS
blk->u.carrier = crr;
#else
@@ -5942,7 +5942,7 @@ erts_alcu_init(AlcUInit_t *init)
erts_atomic_init_nob(&sentinel->prev, (erts_aint_t) sentinel);
}
#endif
- ASSERT(SBC_BLK_SZ_MASK == MBC_FBLK_SZ_MASK); /* see BLK_SZ */
+ ERTS_CT_ASSERT(SBC_BLK_SZ_MASK == MBC_FBLK_SZ_MASK); /* see BLK_SZ */
#if HAVE_ERTS_MSEG
ASSERT(erts_mseg_unit_size() == ERTS_SACRR_UNIT_SZ);
max_mseg_carriers = init->mmc;
diff --git a/erts/emulator/beam/erl_gc.c b/erts/emulator/beam/erl_gc.c
index 5f78a7b532..d1a7ee113b 100644
--- a/erts/emulator/beam/erl_gc.c
+++ b/erts/emulator/beam/erl_gc.c
@@ -175,15 +175,15 @@ erts_init_gc(void)
int i = 0, ix;
Sint max_heap_size = 0;
- ASSERT(offsetof(ProcBin,thing_word) == offsetof(struct erl_off_heap_header,thing_word));
- ASSERT(offsetof(ProcBin,thing_word) == offsetof(ErlFunThing,thing_word));
- ASSERT(offsetof(ProcBin,thing_word) == offsetof(ExternalThing,header));
- ASSERT(offsetof(ProcBin,size) == offsetof(struct erl_off_heap_header,size));
- ASSERT(offsetof(ProcBin,size) == offsetof(ErlSubBin,size));
- ASSERT(offsetof(ProcBin,size) == offsetof(ErlHeapBin,size));
- ASSERT(offsetof(ProcBin,next) == offsetof(struct erl_off_heap_header,next));
- ASSERT(offsetof(ProcBin,next) == offsetof(ErlFunThing,next));
- ASSERT(offsetof(ProcBin,next) == offsetof(ExternalThing,next));
+ ERTS_CT_ASSERT(offsetof(ProcBin,thing_word) == offsetof(struct erl_off_heap_header,thing_word));
+ ERTS_CT_ASSERT(offsetof(ProcBin,thing_word) == offsetof(ErlFunThing,thing_word));
+ ERTS_CT_ASSERT(offsetof(ProcBin,thing_word) == offsetof(ExternalThing,header));
+ ERTS_CT_ASSERT(offsetof(ProcBin,size) == offsetof(struct erl_off_heap_header,size));
+ ERTS_CT_ASSERT(offsetof(ProcBin,size) == offsetof(ErlSubBin,size));
+ ERTS_CT_ASSERT(offsetof(ProcBin,size) == offsetof(ErlHeapBin,size));
+ ERTS_CT_ASSERT(offsetof(ProcBin,next) == offsetof(struct erl_off_heap_header,next));
+ ERTS_CT_ASSERT(offsetof(ProcBin,next) == offsetof(ErlFunThing,next));
+ ERTS_CT_ASSERT(offsetof(ProcBin,next) == offsetof(ExternalThing,next));
erts_test_long_gc_sleep = 0;
diff --git a/erts/emulator/beam/erl_instrument.c b/erts/emulator/beam/erl_instrument.c
index df7c443387..da85b86c87 100644
--- a/erts/emulator/beam/erl_instrument.c
+++ b/erts/emulator/beam/erl_instrument.c
@@ -1226,7 +1226,7 @@ erts_instr_init(int stat, int map_stat)
mem_anchor = NULL;
/* Install instrumentation functions */
- ASSERT(sizeof(erts_allctrs) == sizeof(real_allctrs));
+ ERTS_CT_ASSERT(sizeof(erts_allctrs) == sizeof(real_allctrs));
sys_memcpy((void *)real_allctrs,(void *)erts_allctrs,sizeof(erts_allctrs));
diff --git a/erts/emulator/beam/erl_mtrace.c b/erts/emulator/beam/erl_mtrace.c
index c8bb126687..fa1bde1c87 100644
--- a/erts/emulator/beam/erl_mtrace.c
+++ b/erts/emulator/beam/erl_mtrace.c
@@ -627,7 +627,7 @@ erts_mtrace_install_wrapper_functions(void)
if (erts_mtrace_enabled) {
int i;
/* Install trace functions */
- ASSERT(sizeof(erts_allctrs) == sizeof(real_allctrs));
+ ERTS_CT_ASSERT(sizeof(erts_allctrs) == sizeof(real_allctrs));
sys_memcpy((void *) real_allctrs,
(void *) erts_allctrs,
diff --git a/erts/emulator/beam/erl_printf_term.c b/erts/emulator/beam/erl_printf_term.c
index 74e38c13df..c982dc2080 100644
--- a/erts/emulator/beam/erl_printf_term.c
+++ b/erts/emulator/beam/erl_printf_term.c
@@ -594,7 +594,7 @@ erts_printf_term(fmtfn_t fn, void* arg, ErlPfEterm term, long precision,
ErlPfEterm* term_base)
{
int res;
- ASSERT(sizeof(ErlPfEterm) == sizeof(Eterm));
+ ERTS_CT_ASSERT(sizeof(ErlPfEterm) == sizeof(Eterm));
res = print_term(fn, arg, (Eterm)term, &precision, (Eterm*)term_base);
if (res < 0)
diff --git a/erts/emulator/beam/erl_process.c b/erts/emulator/beam/erl_process.c
index b0e0cf13f8..08c03e7135 100644
--- a/erts/emulator/beam/erl_process.c
+++ b/erts/emulator/beam/erl_process.c
@@ -2366,7 +2366,6 @@ erts_active_schedulers(void)
ERTS_ATOMIC_FOREACH_RUNQ(rq, as -= abs(rq->waiting));
- ASSERT(as >= 0);
return as;
}
@@ -10484,7 +10483,7 @@ alloc_process(ErtsRunQueue *rq, erts_aint32_t state)
init_arg.run_queue = rq;
init_arg.state = state;
- ASSERT(((char *) p) == ((char *) &p->common));
+ ERTS_CT_ASSERT(offsetof(Process,common) == 0);
if (!erts_ptab_new_element(&erts_proc,
&p->common,
diff --git a/erts/emulator/beam/erl_trace.c b/erts/emulator/beam/erl_trace.c
index ea5c850a30..eba07667ad 100644
--- a/erts/emulator/beam/erl_trace.c
+++ b/erts/emulator/beam/erl_trace.c
@@ -2225,7 +2225,7 @@ trace_gc(Process *p, Eterm what)
Eterm* limit;
#endif
- ASSERT(sizeof(values)/sizeof(*values) == sizeof(tags)/sizeof(Eterm));
+ ERTS_CT_ASSERT(sizeof(values)/sizeof(*values) == sizeof(tags)/sizeof(Eterm));
UseTmpHeap(LOCAL_HEAP_SIZE,p);
diff --git a/erts/emulator/beam/io.c b/erts/emulator/beam/io.c
index 4d262ff022..d46ac9b336 100644
--- a/erts/emulator/beam/io.c
+++ b/erts/emulator/beam/io.c
@@ -391,7 +391,7 @@ static Port *create_port(char *name,
/* Set default tracing */
erts_get_default_tracing(&ERTS_TRACE_FLAGS(prt), &ERTS_TRACER_PROC(prt));
- ASSERT(((char *) prt) == ((char *) &prt->common));
+ ERTS_CT_ASSERT(offsetof(Port,common) == 0);
#if !ERTS_PORT_INIT_INSTR_NEED_ID
/*
@@ -6698,7 +6698,7 @@ static void ref_to_driver_monitor(Eterm ref, ErlDrvMonitor *mon)
{
RefThing *refp;
ASSERT(is_internal_ref(ref));
- ASSERT(sizeof(RefThing) <= sizeof(ErlDrvMonitor));
+ ERTS_CT_ASSERT(sizeof(RefThing) <= sizeof(ErlDrvMonitor));
refp = ref_thing_ptr(ref);
memset(mon,0,sizeof(ErlDrvMonitor));
memcpy(mon,refp,sizeof(RefThing));
diff --git a/erts/emulator/beam/sys.h b/erts/emulator/beam/sys.h
index c29d4b3777..7661bf2dc7 100644
--- a/erts/emulator/beam/sys.h
+++ b/erts/emulator/beam/sys.h
@@ -189,6 +189,22 @@ __decl_noreturn void __noreturn erl_assert_error(const char* expr, const char *f
#endif
/*
+ * Compile time assert
+ * (the actual compiler error msg can be a bit confusing)
+ */
+#if ERTS_AT_LEAST_GCC_VSN__(3,1,1)
+# define ERTS_CT_ASSERT(e) \
+ do { \
+ enum { compile_time_assert__ = __builtin_choose_expr((e),0,(void)0) }; \
+ } while(0)
+#else
+# define ERTS_CT_ASSERT(e) \
+ do { \
+ enum { compile_time_assert__ = 1/(e) }; \
+ } while (0)
+#endif
+
+/*
* Microsoft C/C++: We certainly want to use stdarg.h and prototypes.
* But MSC doesn't define __STDC__, unless we compile with the -Za
* flag (strict ANSI C, no Microsoft extension). Compiling with -Za
diff --git a/erts/emulator/drivers/common/inet_drv.c b/erts/emulator/drivers/common/inet_drv.c
index db8a251fdd..c8b69b0a94 100644
--- a/erts/emulator/drivers/common/inet_drv.c
+++ b/erts/emulator/drivers/common/inet_drv.c
@@ -3948,9 +3948,9 @@ static int inet_init()
if (0 != erl_drv_tsd_key_create("inet_buffer_stack_key", &buffer_stack_key))
goto error;
- ASSERT(sizeof(struct in_addr) == 4);
+ ERTS_CT_ASSERT(sizeof(struct in_addr) == 4);
# if defined(HAVE_IN6) && defined(AF_INET6)
- ASSERT(sizeof(struct in6_addr) == 16);
+ ERTS_CT_ASSERT(sizeof(struct in6_addr) == 16);
# endif
INIT_ATOM(ok);
@@ -3996,7 +3996,7 @@ static int inet_init()
#ifdef HAVE_SCTP
/* Check the size of SCTP AssocID -- currently both this driver and the
Erlang part require 32 bit: */
- ASSERT(sizeof(sctp_assoc_t)==ASSOC_ID_LEN);
+ ERTS_CT_ASSERT(sizeof(sctp_assoc_t)==ASSOC_ID_LEN);
# if defined(HAVE_SCTP_BINDX)
p_sctp_bindx = sctp_bindx;
# if defined(HAVE_SCTP_PEELOFF)