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dbghelp: Added an unknown type in symt_cache for handling bad references to types.

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Signed-off-by: Eric Pouech <eric.pouech@gmail.com>
Signed-off-by: Alexandre Julliard <julliard@winehq.org>
This commit is contained in:
Eric Pouech 2021-09-02 11:22:38 +02:00 committed by Alexandre Julliard
parent e08b80a752
commit ee3ea1e163
1 changed files with 8 additions and 5 deletions
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13
dlls/dbghelp/dwarf.c
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@ -163,8 +163,9 @@ typedef struct dwarf2_traverse_context_s
} dwarf2_traverse_context_t;
/* symt_cache indexes */
#define sc_void 0
#define sc_num 1
#define sc_void 0
#define sc_unknown 1
#define sc_num 2
typedef struct dwarf2_parse_context_s
{
@ -178,7 +179,7 @@ typedef struct dwarf2_parse_context_s
struct sparse_array debug_info_table;
ULONG_PTR load_offset;
ULONG_PTR ref_offset;
struct symt* symt_cache[sc_num]; /* void */
struct symt* symt_cache[sc_num]; /* void, unknown */
char* cpp_name;
} dwarf2_parse_context_t;
@ -946,11 +947,12 @@ static struct symt* dwarf2_lookup_type(dwarf2_parse_context_t* ctx,
dwarf2_debug_info_t* type;
if (!dwarf2_find_attribute(ctx, di, DW_AT_type, &attr))
/* this is only valid if current language of CU is C or C++ */
return ctx->symt_cache[sc_void];
if (!(type = sparse_array_find(&ctx->debug_info_table, attr.u.uvalue)))
{
FIXME("Unable to find back reference to type %lx\n", attr.u.uvalue);
return ctx->symt_cache[sc_void];
return ctx->symt_cache[sc_unknown];
}
if (!type->symt)
{
@ -959,7 +961,7 @@ static struct symt* dwarf2_lookup_type(dwarf2_parse_context_t* ctx,
if (!type->symt)
{
FIXME("Unable to load forward reference for tag %lx\n", type->abbrev->tag);
return ctx->symt_cache[sc_void];
return ctx->symt_cache[sc_unknown];
}
}
return type->symt;
@ -2373,6 +2375,7 @@ static BOOL dwarf2_parse_compilation_unit(const dwarf2_section_t* sections,
ctx.ref_offset = comp_unit_start - sections[section_debug].address;
memset(ctx.symt_cache, 0, sizeof(ctx.symt_cache));
ctx.symt_cache[sc_void] = &symt_new_basic(module, btVoid, "void", 0)->symt;
ctx.symt_cache[sc_unknown] = &symt_new_basic(module, btNoType, "# unknown", 0)->symt;
ctx.cpp_name = NULL;
abbrev_ctx.data = sections[section_abbrev].address + cu_abbrev_offset;