kconfig/lkc_proto.h
author "Yann E. MORIN" <yann.morin.1998@anciens.enib.fr>
Tue Dec 13 23:32:39 2011 +0100 (2011-12-13)
branch1.13
changeset 2847 c0bf2319af08
parent 943 1cca90ce0481
permissions -rw-r--r--
scripts: fix dumping execution backtrace

Dumping the backtrace has been broken since changeset #652e56d6d35a:
scripts: execute each steps in a subshell

We can spawn sub-sub-shells in some cases.

The way the fault handler works is to dump the backtrace, but to avoid
printing it once for every sub-shell (which could get quite confusing),
it simply exits when it detects that it is being run in a sub-shell,
leaving to the top-level shell the work to dump the backtrace.

Because each step is executed in its own sub-shell, the variable arrays
that contain the step name, the source file and line number, are lost
when exiting the per-step sub-shell.

Hence, the backtrace is currently limited to printing only the top-level
main procedure of the shell.

Fix this thus:
- when dumping the bckatraces for the steps & the functions, remember
it was dumped, and only dump it if it was not already dumped
- at the top-level shell, print the hints

Also, rename the top-level step label.

Reported-by: Benoît Thébaudeau <benoit.thebaudeau@advansee.com>
Signed-off-by: "Yann E. MORIN" <yann.morin.1998@anciens.enib.fr>
(transplanted from 4193d6e6a17430a177fa88c287879c2c35e319f3)
     1 #include <stdarg.h>
     2 
     3 /* confdata.c */
     4 P(conf_parse,void,(const char *name));
     5 P(conf_read,int,(const char *name));
     6 P(conf_read_simple,int,(const char *name, int));
     7 P(conf_write_defconfig,int,(const char *name));
     8 P(conf_write,int,(const char *name));
     9 P(conf_write_autoconf,int,(void));
    10 P(conf_get_changed,bool,(void));
    11 P(conf_set_changed_callback, void,(void (*fn)(void)));
    12 P(conf_set_message_callback, void,(void (*fn)(const char *fmt, va_list ap)));
    13 
    14 /* menu.c */
    15 P(rootmenu,struct menu,);
    16 
    17 P(menu_is_visible, bool, (struct menu *menu));
    18 P(menu_has_prompt, bool, (struct menu *menu));
    19 P(menu_get_prompt,const char *,(struct menu *menu));
    20 P(menu_get_root_menu,struct menu *,(struct menu *menu));
    21 P(menu_get_parent_menu,struct menu *,(struct menu *menu));
    22 P(menu_has_help,bool,(struct menu *menu));
    23 P(menu_get_help,const char *,(struct menu *menu));
    24 P(get_symbol_str, void, (struct gstr *r, struct symbol *sym));
    25 P(get_relations_str, struct gstr, (struct symbol **sym_arr));
    26 P(menu_get_ext_help,void,(struct menu *menu, struct gstr *help));
    27 
    28 /* symbol.c */
    29 P(symbol_hash,struct symbol *,[SYMBOL_HASHSIZE]);
    30 
    31 P(sym_lookup,struct symbol *,(const char *name, int flags));
    32 P(sym_find,struct symbol *,(const char *name));
    33 P(sym_expand_string_value,const char *,(const char *in));
    34 P(sym_re_search,struct symbol **,(const char *pattern));
    35 P(sym_type_name,const char *,(enum symbol_type type));
    36 P(sym_calc_value,void,(struct symbol *sym));
    37 P(sym_get_type,enum symbol_type,(struct symbol *sym));
    38 P(sym_tristate_within_range,bool,(struct symbol *sym,tristate tri));
    39 P(sym_set_tristate_value,bool,(struct symbol *sym,tristate tri));
    40 P(sym_toggle_tristate_value,tristate,(struct symbol *sym));
    41 P(sym_string_valid,bool,(struct symbol *sym, const char *newval));
    42 P(sym_string_within_range,bool,(struct symbol *sym, const char *str));
    43 P(sym_set_string_value,bool,(struct symbol *sym, const char *newval));
    44 P(sym_is_changable,bool,(struct symbol *sym));
    45 P(sym_get_choice_prop,struct property *,(struct symbol *sym));
    46 P(sym_get_default_prop,struct property *,(struct symbol *sym));
    47 P(sym_get_string_value,const char *,(struct symbol *sym));
    48 
    49 P(prop_get_type_name,const char *,(enum prop_type type));
    50 
    51 /* expr.c */
    52 P(expr_compare_type,int,(enum expr_type t1, enum expr_type t2));
    53 P(expr_print,void,(struct expr *e, void (*fn)(void *, struct symbol *, const char *), void *data, int prevtoken));