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Diffstat (limited to 'cddl/contrib/opensolaris/tools/ctf/cvt/dwarf.c')
-rw-r--r--cddl/contrib/opensolaris/tools/ctf/cvt/dwarf.c42
1 files changed, 40 insertions, 2 deletions
diff --git a/cddl/contrib/opensolaris/tools/ctf/cvt/dwarf.c b/cddl/contrib/opensolaris/tools/ctf/cvt/dwarf.c
index 19aeff2c7942..c7f785eb0446 100644
--- a/cddl/contrib/opensolaris/tools/ctf/cvt/dwarf.c
+++ b/cddl/contrib/opensolaris/tools/ctf/cvt/dwarf.c
@@ -674,6 +674,13 @@ die_array_create(dwarf_t *dw, Dwarf_Die arr, Dwarf_Off off, tdesc_t *tdp)
tdesc_t *dimtdp;
int flags;
+ /* Check for bogus gcc DW_AT_byte_size attribute */
+ if (uval == (unsigned)-1) {
+ printf("dwarf.c:%s() working around bogus -1 DW_AT_byte_size\n",
+ __func__);
+ uval = 0;
+ }
+
tdp->t_size = uval;
/*
@@ -760,6 +767,12 @@ die_enum_create(dwarf_t *dw, Dwarf_Die die, Dwarf_Off off, tdesc_t *tdp)
tdp->t_type = ENUM;
(void) die_unsigned(dw, die, DW_AT_byte_size, &uval, DW_ATTR_REQ);
+ /* Check for bogus gcc DW_AT_byte_size attribute */
+ if (uval == (unsigned)-1) {
+ printf("dwarf.c:%s() working around bogus -1 DW_AT_byte_size\n",
+ __func__);
+ uval = 0;
+ }
tdp->t_size = uval;
if ((mem = die_child(dw, die)) != NULL) {
@@ -873,7 +886,7 @@ static void
die_sou_create(dwarf_t *dw, Dwarf_Die str, Dwarf_Off off, tdesc_t *tdp,
int type, const char *typename)
{
- Dwarf_Unsigned sz, bitsz, bitoff;
+ Dwarf_Unsigned sz, bitsz, bitoff, maxsz=0;
Dwarf_Die mem;
mlist_t *ml, **mlastp;
iidesc_t *ii;
@@ -929,6 +942,8 @@ die_sou_create(dwarf_t *dw, Dwarf_Die str, Dwarf_Off off, tdesc_t *tdp,
ml->ml_name = NULL;
ml->ml_type = die_lookup_pass1(dw, mem, DW_AT_type);
+ debug(3, "die_sou_create(): ml_type = %p t_id = %d\n",
+ ml->ml_type, ml->ml_type->t_id);
if (die_mem_offset(dw, mem, DW_AT_data_member_location,
&mloff, 0)) {
@@ -956,8 +971,24 @@ die_sou_create(dwarf_t *dw, Dwarf_Die str, Dwarf_Off off, tdesc_t *tdp,
*mlastp = ml;
mlastp = &ml->ml_next;
+
+ /* Find the size of the largest member to work around a gcc
+ * bug. See GCC Bugzilla 35998.
+ */
+ if (maxsz < ml->ml_size)
+ maxsz = ml->ml_size;
+
} while ((mem = die_sibling(dw, mem)) != NULL);
+ /* See if we got a bogus DW_AT_byte_size. GCC will sometimes
+ * emit this.
+ */
+ if (sz == (unsigned)-1) {
+ printf("dwarf.c:%s() working around bogus -1 DW_AT_byte_size\n",
+ __func__);
+ tdp->t_size = maxsz / 8; /* maxsz is in bits, t_size is bytes */
+ }
+
/*
* GCC will attempt to eliminate unused types, thus decreasing the
* size of the emitted dwarf. That is, if you declare a foo_t in your
@@ -1054,7 +1085,7 @@ die_sou_resolve(tdesc_t *tdp, tdesc_t **tdpp __unused, void *private)
}
if (ml->ml_size != 0 && mt->t_type == INTRINSIC &&
- mt->t_intr->intr_nbits != ml->ml_size) {
+ mt->t_intr->intr_nbits != (int)ml->ml_size) {
/*
* This member is a bitfield, and needs to reference
* an intrinsic type with the same width. If the
@@ -1370,6 +1401,13 @@ die_base_create(dwarf_t *dw, Dwarf_Die base, Dwarf_Off off, tdesc_t *tdp)
*/
(void) die_unsigned(dw, base, DW_AT_byte_size, &sz, DW_ATTR_REQ);
+ /* Check for bogus gcc DW_AT_byte_size attribute */
+ if (sz == (unsigned)-1) {
+ printf("dwarf.c:%s() working around bogus -1 DW_AT_byte_size\n",
+ __func__);
+ sz = 0;
+ }
+
if (tdp->t_name == NULL)
terminate("die %llu: base type without name\n", off);