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cgen: fix dump(c_struct), where c_struct has fields of type &&char

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This commit is contained in:
Delyan Angelov 2022-10-12 09:00:03 +03:00
parent 9569c0504c
commit 7f2d731d19
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GPG Key ID: 66886C0F12D595ED
3 changed files with 32 additions and 2 deletions
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9
vlib/v/gen/c/auto_str_methods.v
View File

@ -773,6 +773,10 @@ fn (g &Gen) type_to_fmt(typ ast.Type) StrIntpType {
// return '%C\\000' // a C string
return .si_s
}
typ_nr_muls := typ.nr_muls()
if typ_nr_muls > 1 {
return .si_p
}
sym := g.table.sym(typ)
if typ.is_ptr() && (typ.is_int_valptr() || typ.is_float_valptr()) {
return .si_s
@ -902,7 +906,7 @@ fn (mut g Gen) gen_str_for_struct(info ast.Struct, styp string, str_fn_name stri
g.get_str_fn(ftyp_noshared)
}
// manage the fact hat with float we use always the g representation
// with floats we use always the g representation:
if sym.kind !in [.f32, .f64] {
fn_body.write_string('{_SLIT("$quote_str"), ${int(base_fmt)}, {.${data_str(base_fmt)}=')
} else {
@ -913,7 +917,8 @@ fn (mut g Gen) gen_str_for_struct(info ast.Struct, styp string, str_fn_name stri
mut funcprefix := ''
mut func, mut caller_should_free := struct_auto_str_func(sym, field.typ, field_styp_fn_name,
field.name, sym_has_str_method, str_method_expects_ptr)
if field.typ in ast.cptr_types {
ftyp_nr_muls := field.typ.nr_muls()
if ftyp_nr_muls > 1 || field.typ in ast.cptr_types {
func = '(voidptr) it.$field.name'
caller_should_free = false
} else if ftyp_noshared.is_ptr() {

16
vlib/v/tests/dump_c_structs/dump_c_struct_test.v
View File

@ -1,4 +1,5 @@
#include "@VMODROOT/epoll.h"
#include "@VMODROOT/netdb.h"
pub struct C.epoll_event {
mut:
@ -19,6 +20,14 @@ struct Epoll {
ev C.epoll_event
}
struct C.hostent {
h_name &char
h_aliases &&char
h_addrtype int
h_length int
h_addr_list &&char
}
fn test_dump_c_struct() {
ev := C.epoll_event{}
unsafe { C.memset(&ev, 0, sizeof(ev)) }
@ -30,5 +39,12 @@ fn test_dump_c_struct() {
}
dump(e)
println(e)
//
mut hostent := &C.hostent{
h_addr_list: unsafe { nil }
h_aliases: unsafe { nil }
h_name: unsafe { nil }
}
dump(hostent)
assert true
}

9
vlib/v/tests/dump_c_structs/netdb.h Normal file
View File

@ -0,0 +1,9 @@
/* Description of data base entry for a single host. */
struct hostent {
char *h_name; /* Official name of host. */
char **h_aliases; /* Alias list. */
int h_addrtype; /* Host address type. */
int h_length; /* Length of address. */
char **h_addr_list; /* List of addresses from name server. */
};