pike.git/src/error.c:9d1f548ef0f72add6d586f51e1f0377ec2f955ef

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For copyright information see COPYRIGHT. || Pike is distributed under GPL, LGPL and MPL. See the file COPYING || for more information. */ #include "global.h" #include "svalue.h" #include "pike_macros.h" #include "pike_error.h" #include "interpret.h" #include "stralloc.h" #include "builtin_functions.h" #include "array.h" #include "mapping.h" #include "object.h" #include "main.h" #include "builtin_functions.h" #include "backend.h" #include "operators.h" #include "module_support.h" #include "threads.h" #include "gc.h" #include "pike_types.h" #include "sprintf.h" /* __attribute__ only applies to function declarations, not definitions, so we disable them here. */ #undef ATTRIBUTE #define ATTRIBUTE(X) /* #define ERROR_DEBUG */ PMOD_EXPORT const char msg_fatal_error[] = "%s:%ld: Fatal error:\n"; #ifdef PIKE_DEBUG PMOD_EXPORT const char msg_unsetjmp_nosync_1[] = "UNSETJMP out of sync! (last SETJMP at %s)!\n"; PMOD_EXPORT const char msg_unsetjmp_nosync_2[] = "UNSETJMP out of sync! (Pike_interpreter.recoveries = 0)\n"; PMOD_EXPORT const char msg_last_setjmp[] = "LAST SETJMP: %s\n"; PMOD_EXPORT const char msg_unset_onerr_nosync_1[] = "UNSET_ONERROR out of sync (%p != %p).\n" "Last SET_ONERROR is from %s\n"; PMOD_EXPORT const char msg_unset_onerr_nosync_2[] = "UNSET_ONERROR out of sync. No Pike_interpreter.recoveries left.\n"; PMOD_EXPORT const char msg_assert_onerr[] = "%s ASSERT_ONERROR(%p) failed\n"; #endif PMOD_EXPORT const char msg_bad_arg[] = "Bad argument %d to %s(). Expected %s.\n"; PMOD_EXPORT const char msg_bad_arg_2[] = "Bad argument %d to %s(). %s\n"; PMOD_EXPORT const char msg_out_of_mem[] = "Out of memory.\n"; PMOD_EXPORT const char msg_out_of_mem_2[] = "Out of memory - failed to allocate %"PRINTSIZET"d bytes.\n"; PMOD_EXPORT const char msg_div_by_zero[] = "Division by zero.\n"; /* * Recoveries handling. */ #ifdef PIKE_DEBUG /* struct mapping *recovery_lookup = NULL; */ PMOD_EXPORT void check_recovery_context(void) { char foo; #define TESTILITEST ((((char *)Pike_interpreter.recoveries)-((char *)&foo))*STACK_DIRECTION) if(Pike_interpreter.recoveries && Pike_interpreter.recoveries->on_stack && TESTILITEST > 0) { fprintf(stderr, "Recoveries is out biking (Pike_interpreter.recoveries=%p, Pike_sp=%p, %ld)!\n", Pike_interpreter.recoveries, &foo, (long)TESTILITEST); fprintf(stderr, "Last recovery was added at %s:%d\n", Pike_interpreter.recoveries->file, Pike_interpreter.recoveries->line); push_int((ptrdiff_t)Pike_interpreter.recoveries); /* if ((s = low_mapping_lookup(recovery_lookup, Pike_sp-1))) { */ /* fprintf(stderr, "Try also looking at %s.\n", (char*)s->u.integer); */ /* } */ pop_stack(); Pike_fatal("Recoveries is out biking (Pike_interpreter.recoveries=%p, C sp=%p, %ld)!\n", Pike_interpreter.recoveries, &foo, (long)TESTILITEST); } /* Add more stuff here when required */ } #endif /*! @decl void _gdb_breakpoint() *! *! This function only exists so that it is possible to set a gdb *! breakpoint on the function pike_gdb_breakpoint. */ PMOD_EXPORT void pike_gdb_breakpoint(INT32 args) { pop_n_elems(args); } PMOD_EXPORT JMP_BUF *init_recovery(JMP_BUF *r, size_t stack_pop_levels DEBUG_INIT_REC_ARGS) { check_recovery_context(); #ifdef PIKE_DEBUG r->file=location; OED_FPRINTF((stderr, "init_recovery(%p) %s\n", r, location)); r->on_stack = on_stack; #endif r->frame_pointer=Pike_fp; r->stack_pointer=Pike_sp - stack_pop_levels - Pike_interpreter.evaluator_stack; r->mark_sp=Pike_mark_sp - Pike_interpreter.mark_stack; r->previous=Pike_interpreter.recoveries; r->onerror=0; r->severity=THROW_ERROR; Pike_interpreter.recoveries=r; check_recovery_context(); #ifdef PIKE_DEBUG /* if (recovery_lookup && Pike_sp) { */ /* push_int((ptrdiff_t)r); */ /* push_int((ptrdiff_t)location); */ /* mapping_insert(recovery_lookup, Pike_sp-2, Pike_sp-1); */ /* pop_n_elems(2); */ /* } */ #endif return r; } /* coverity[+kill] */ PMOD_EXPORT DECLSPEC(noreturn) void pike_throw(void) ATTRIBUTE((noreturn)) { #ifdef TRACE_UNFINISHED_TYPE_FIELDS accept_unfinished_type_fields++; #endif while(Pike_interpreter.recoveries && throw_severity > Pike_interpreter.recoveries->severity) { while(Pike_interpreter.recoveries->onerror) { ONERROR *err = Pike_interpreter.recoveries->onerror; while(Pike_fp != err->frame_pointer) { #ifdef PIKE_DEBUG if(!Pike_fp) Pike_fatal("Popped out of stack frames.\n"); #endif POP_PIKE_FRAME(); } Pike_interpreter.recoveries->onerror = err->previous; (*err->func)(err->arg); } { JMP_BUF *prev_rec = Pike_interpreter.recoveries->previous; if (Pike_interpreter.catch_ctx && (&Pike_interpreter.catch_ctx->recovery == Pike_interpreter.recoveries)) { struct catch_context *cc = Pike_interpreter.catch_ctx; Pike_interpreter.catch_ctx = cc->prev; really_free_catch_context (cc); } Pike_interpreter.recoveries = prev_rec; } } if(!Pike_interpreter.recoveries) Pike_fatal("No error recovery context.\n"); /* Don't pop the stack before the onerrors have run; they might need * items from the stack. */ while(Pike_interpreter.recoveries->onerror) { ONERROR *err = Pike_interpreter.recoveries->onerror; while(Pike_fp != err->frame_pointer) { #ifdef PIKE_DEBUG if(!Pike_fp) Pike_fatal("Popped out of stack frames.\n"); #endif POP_PIKE_FRAME(); } Pike_interpreter.recoveries->onerror = err->previous; (*err->func)(err->arg); } while(Pike_fp != Pike_interpreter.recoveries->frame_pointer) { #ifdef PIKE_DEBUG if(!Pike_fp) Pike_fatal("Popped out of stack frames.\n"); #endif POP_PIKE_FRAME(); } #ifdef PIKE_DEBUG if(Pike_sp - Pike_interpreter.evaluator_stack < Pike_interpreter.recoveries->stack_pointer) Pike_fatal("Stack error in error.\n"); #endif pop_n_elems(Pike_sp - Pike_interpreter.evaluator_stack - Pike_interpreter.recoveries->stack_pointer); Pike_mark_sp = Pike_interpreter.mark_stack + Pike_interpreter.recoveries->mark_sp; #if defined(DEBUG_MALLOC) && defined(PIKE_DEBUG) /* This will tell us where the value was caught (I hope) */ if(REFCOUNTED_TYPE(TYPEOF(throw_value))) { debug_malloc_update_location(throw_value.u.refs, Pike_interpreter.recoveries->file); debug_malloc_touch(throw_value.u.refs); } #endif #ifdef TRACE_UNFINISHED_TYPE_FIELDS accept_unfinished_type_fields--; #endif if (Pike_interpreter.catch_ctx && &Pike_interpreter.catch_ctx->recovery == Pike_interpreter.recoveries) { /* This is a phony recovery made in F_CATCH that hasn't been passed * to LOW_SETJMP. The real jmpbuf is in catching_eval_instruction. */ #ifdef PIKE_DEBUG if (!Pike_interpreter.catching_eval_jmpbuf) Pike_fatal ("Got phony F_CATCH recovery but no catching_eval_jmpbuf.\n"); #endif LOW_LONGJMP (*Pike_interpreter.catching_eval_jmpbuf, 1); } else LOW_LONGJMP(Pike_interpreter.recoveries->recovery,1); } PMOD_EXPORT void push_error(const char *description) { push_text(description); f_backtrace(0); f_aggregate(2); } PMOD_EXPORT struct svalue throw_value = SVALUE_INIT_FREE; PMOD_EXPORT int throw_severity; static const char *in_error; /* coverity[+kill] */ PMOD_EXPORT DECLSPEC(noreturn) void low_error(const char *buf) ATTRIBUTE((noreturn)) { push_error(buf); free_svalue(& throw_value); move_svalue (&throw_value, --Pike_sp); throw_severity = THROW_ERROR; in_error=0; pike_throw(); /* Hope someone is catching, or we will be out of balls. */ } PMOD_EXPORT void va_make_error (const char *fmt, va_list args) { struct string_builder s; init_string_builder(&s, 0); string_builder_vsprintf(&s, fmt, args); push_string(finish_string_builder(&s)); f_backtrace(0); f_aggregate(2); } /* coverity[+kill] */ PMOD_EXPORT void DECLSPEC(noreturn) va_error(const char *fmt, va_list args) ATTRIBUTE((noreturn)) { SWAP_IN_THREAD_IF_REQUIRED(); if(in_error) { const char *tmp=in_error; in_error = NULL; Pike_fatal("Recursive Pike_error() calls, " "original error: %s, new error: %s", tmp, fmt); } in_error=fmt; if(!Pike_interpreter.recoveries) { /* FIXME: Why not use Pike_fatal() here? */ #ifdef PIKE_DEBUG if (d_flag) { fprintf(stderr,"No error recovery context!\n%s", fmt); dump_backlog(); } #endif fprintf(stderr,"No error recovery context!\n%s", fmt); exit(99); } va_make_error (fmt, args); free_svalue(&throw_value); move_svalue(&throw_value, --Pike_sp); throw_severity = THROW_ERROR; in_error = NULL; pike_throw(); /* Hope someone is catching, or we will be out of balls. */ } PMOD_EXPORT void make_error (const char *fmt, ...) /* Creates a general error container like Pike_error but doesn't throw * it, instead it is left on the stack. */ { va_list args; va_start (args,fmt); va_make_error (fmt,args); va_end (args); } /* coverity[+kill] */ PMOD_EXPORT DECLSPEC(noreturn) void Pike_error(const char *fmt,...) ATTRIBUTE((noreturn)) { va_list args; va_start(args,fmt); va_error(fmt,args); va_end(args); } /* coverity[+kill] */ PMOD_EXPORT DECLSPEC(noreturn) void new_error(const char *name, const char *text, struct svalue *oldsp, INT32 args) ATTRIBUTE((noreturn)) { int i; ASSERT_THREAD_SWAPPED_IN(); if(in_error) { const char *tmp=in_error; in_error=0; Pike_fatal("Recursive error() calls, original error: %s",tmp); } in_error=text; if(!Pike_interpreter.recoveries) { #ifdef PIKE_DEBUG if (d_flag) { fprintf(stderr,"No error recovery context!\n%s():%s", name ? name : "<unknown>", text); dump_backlog(); } #endif fprintf(stderr,"No error recovery context!\n%s():%s", name ? name : "<unknown>", text); exit(99); } push_text(text); f_backtrace(0); push_int(0); push_int(0); if (name) push_text(name); else push_int(0); for (i=-args; i; i++) { if (TYPEOF(oldsp[i]) <= MAX_TYPE) { push_svalue(oldsp + i); } else { char buffer[50]; sprintf(buffer, "<Svalue:0x%04x:0x%04x:%p>", TYPEOF(oldsp[i]), SUBTYPEOF(oldsp[i]), oldsp[i].u.ptr); push_text(buffer); } } f_aggregate(args + 3); f_aggregate(1); f_add(2); f_aggregate(2); free_svalue(&throw_value); move_svalue (&throw_value, --Pike_sp); throw_severity=THROW_ERROR; in_error=0; pike_throw(); /* Hope someone is catching, or we will be out of balls. */ } static int inhibit_errors = 0; /* coverity[+kill] */ PMOD_EXPORT void exit_on_error(const void *msg) { ONERROR tmp; if (throw_severity > THROW_ERROR) { /* THROW_THREAD_EXIT or THROW_EXIT or similar. * * Let it continue without complaining. */ return; } SET_ONERROR(tmp,fatal_on_error,"Fatal in exit_on_error!"); d_flag=0; Pike_interpreter.trace_level = 0; if (inhibit_errors) fprintf (stderr, "Got recursive error in exit_on_error: %s\n", (char *) msg); else { struct byte_buffer buf = BUFFER_INIT(); char *s; struct svalue thrown; inhibit_errors = 1; #ifdef PIKE_DEBUG if (d_flag) { fprintf(stderr,"%s\n",(char *)msg); dump_backlog(); } #endif fprintf(stderr,"%s\n",(char *)msg); /* We've reserved LOW_SVALUE_STACK_MARGIN and LOW_C_STACK_MARGIN * for this. */ Pike_interpreter.svalue_stack_margin = 0; Pike_interpreter.c_stack_margin = 0; fprintf(stderr,"Attempting to dump raw error: (may fail)\n"); move_svalue (&thrown, &throw_value); mark_free_svalue (&throw_value); describe_svalue(&buf, &thrown,0,0); free_svalue (&thrown); fprintf(stderr,"%s\n",buffer_get_string(&buf)); buffer_free(&buf); } exit(1); } #ifdef __NT__ /* Wrapper around abort() to avoid interactive requesters on NT. */ int fnordel=0; static void do_abort() { if (!d_flag && !getenv("PIKE_DEBUG")) { exit(-6); /* -SIGIOT */ } fnordel=999/fnordel; } #else /* !__NT__ */ #define do_abort() abort() #endif /* __NT__ */ PMOD_EXPORT void fatal_on_error(const void *msg) { /* It's ok if we're exiting. */ if (throw_severity == THROW_EXIT) return; #ifdef PIKE_DEBUG if (d_flag) { fprintf(stderr,"%s\n",(char *)msg); dump_backlog(); } #endif fprintf(stderr,"%s\n",(char *)msg); do_abort(); } /* coverity[+kill] */ PMOD_EXPORT DECLSPEC(noreturn) void debug_va_fatal(const char *fmt, va_list args) ATTRIBUTE((noreturn)) { static int in_fatal = 0; /* fprintf(stderr, "Raw error: %s\n", fmt); */ /* Prevent double fatal. */ if (in_fatal) { if (fmt) (void)vfprintf(stderr, fmt, args); do_abort(); } in_fatal = 1; #ifdef PIKE_DEBUG if (d_flag) { #ifdef HAVE_VA_COPY if (fmt) { va_list a; va_copy (a, args); (void)vfprintf(stderr, fmt, a); va_end (a); } #endif dump_backlog(); } #endif if (fmt) (void)vfprintf(stderr, fmt, args); if(Pike_in_gc) fprintf(stderr,"Pike was in GC stage %d when this fatal occurred.\n",Pike_in_gc); Pike_in_gc = GC_PASS_DISABLED; d_flag=Pike_interpreter.trace_level=0; if(Pike_sp && Pike_interpreter.evaluator_stack && master_object && master_object->prog) { JMP_BUF jmp; struct callback_list saved_eval_cbs = evaluator_callbacks; /* Simulate threads_disabled to avoid thread switches or any other * evaluator stuff while we let the master describe the backtrace * below. Doing it the naughty way without going through * init_threads_disable etc to avoid hanging on runaway locks. */ #ifdef PIKE_THREADS threads_disabled++; #endif memset (&evaluator_callbacks, 0, sizeof (evaluator_callbacks)); if (SETJMP (jmp)) fprintf(stderr,"Got exception when trying to describe backtrace.\n"); else { jmp.severity = THROW_EXIT; /* Don't want normal exit code to run here. */ push_error("Backtrace at time of fatal:\n"); APPLY_MASTER("describe_backtrace",1); if(TYPEOF(Pike_sp[-1]) == PIKE_T_STRING) write_to_stderr(Pike_sp[-1].u.string->str, Pike_sp[-1].u.string->len); } UNSETJMP (jmp); #ifdef PIKE_THREADS threads_disabled--; #endif evaluator_callbacks = saved_eval_cbs; }else{ fprintf(stderr,"No stack - no backtrace.\n"); } fflush(stderr); do_abort(); } /* coverity[+kill] */ PMOD_EXPORT DECLSPEC(noreturn) void debug_fatal(const char *fmt, ...) ATTRIBUTE((noreturn)) { va_list args; va_start(args,fmt); debug_va_fatal (fmt, args); va_end (args); } #if 1 /*! @class MasterObject */ /*! @decl string describe_backtrace(mixed exception) *! *! Called by various routines to format a readable *! description of an exception. *! *! @param exception *! Something that was thrown. Usually an @[Error.Generic] object, or *! an array with the following content: *! @array *! @elem string msg *! Error message. *! @elem array(backtrace_frame|array(mixed)) backtrace *! Backtrace to the point where the exception occurred. *! @endarray *! *! @returns *! Returns a string describing the exeception. *! *! @note *! Usually added by the initialization code the global name space *! with @[add_constant()]. *! *! @seealso *! @[predef::describe_backtrace()] */ /*! @endclass */ /*! @module Error */ /*! @class Generic *! Class for exception objects for errors of unspecified type. */ /*! @decl string error_message *! *! The error message. It always ends with a newline (@expr{'\n'@}) *! character and it might be more than one line. *! *! Code that catches and rethrows errors may extend this with more *! error information. */ /*! @decl array(backtrace_frame|array(mixed)) error_backtrace *! *! The backtrace as returned by @[backtrace] where the error *! occurred. *! *! Code that catches and rethrows errors should ensure that this *! remains the same in the rethrown error. */ #define GENERIC_ERROR_THIS ((struct generic_error_struct *)CURRENT_STORAGE) #define ERR_DECLARE #include "errors.h" /*! @decl array cast(string type) *! *! Cast operator. *! *! @note *! The only supported type to cast to is @expr{"array"@}, which *! generates an old-style error @expr{({@[message](), *! @[backtrace]()})@}. */ static void f_error_cast(INT32 args) { if(Pike_sp[-args].u.string == literal_array_string) { pop_stack(); apply_current (generic_err_message_fun, 0); apply_current (generic_err_backtrace_fun, 0); f_aggregate(2); } else { pop_stack(); push_undefined(); } } /*! @decl array|string `[](int(0..1) index) *! *! Index operator. *! *! Simulates an array *! @array *! @elem string msg *! Error message as returned by @[message]. *! @elem array backtrace *! Backtrace as returned by @[backtrace]. *! @endarray *! *! @note *! The error message is always terminated with a newline. *! *! @seealso *! @[backtrace()] */ static void f_error_index(INT32 args) { INT_TYPE ind; get_all_args("`[]",args,"%i",&ind); switch(ind) { case 0: pop_n_elems(args); apply_current (generic_err_message_fun, 0); break; case 1: pop_n_elems(args); apply_current (generic_err_backtrace_fun, 0); break; default: index_error("`[]", Pike_sp-args, args, NULL, Pike_sp-args, "Index %"PRINTPIKEINT"d is out of range 0..1.\n", ind); break; } } static void f_error__sizeof(INT32 args) { pop_n_elems(args); push_int(2); } static void f_error__indices(INT32 args) { pop_n_elems(args); push_int(0); push_int(1); f_aggregate(2); } static void f_error__values(INT32 args) { pop_n_elems(args); apply_current(generic_err_message_fun, 0); apply_current(generic_err_backtrace_fun, 0); f_aggregate(2); } /*! @decl string describe() *! *! Return a readable error report that includes the backtrace. */ static void f_error_describe(INT32 args) { pop_n_elems(args); ref_push_object(Pike_fp->current_object); APPLY_MASTER("describe_backtrace",1); } /*! @decl string message() *! *! Return a readable message describing the error. Normally simply *! returns @[error_message]. *! *! If you override this function then you should ensure that *! @[error_message] is included in the returned message, since there *! might be code that catches your error objects, extends *! @[error_message] with more info, and rethrows the error. */ static void f_error_message(INT32 args) { pop_n_elems(args); if (GENERIC_ERROR_THIS->error_message) ref_push_string (GENERIC_ERROR_THIS->error_message); else push_int (0); } /*! @decl array backtrace() *! *! Return the backtrace where the error occurred. Normally simply *! returns @[error_backtrace]. *! *! @seealso *! @[predef::backtrace()] */ static void f_error_backtrace(INT32 args) { pop_n_elems(args); if(GENERIC_ERROR_THIS->error_backtrace) ref_push_array(GENERIC_ERROR_THIS->error_backtrace); else push_int(0); } /*! @decl string _sprintf() */ static void f_error__sprintf(INT32 args) { int mode = 0; if(args>0 && TYPEOF(Pike_sp[-args]) == PIKE_T_INT) mode = Pike_sp[-args].u.integer; pop_n_elems(args); if(mode != 'O') { push_undefined(); return; } { struct program *p = Pike_fp->current_object->prog; int i; struct pike_string *error_name_str; /* error_name is the name the error program wants in printouts * like this. To still let inheriting programs fall back to * describe_program if they don't provide it, we make it private * in the base error classes and allow us to see private * identifiers here. */ MAKE_CONST_STRING (error_name_str, "error_name"); i = really_low_find_shared_string_identifier (error_name_str, p, SEE_PRIVATE); if (i != -1) push_svalue (&PROG_FROM_INT (p, i)-> constants[ID_FROM_INT (p, i)->func.const_info.offset].sval); else { ref_push_program (p); SAFE_APPLY_MASTER ("describe_program", 1); } } push_static_text("(%O)"); if(GENERIC_ERROR_THIS->error_message) ref_push_string(GENERIC_ERROR_THIS->error_message); else push_int(0); f_sprintf(2); f_add(2); } /*! @decl int(0..1) _is_type(string t) *! *! Claims that the error object is an array, for compatibility with *! old style error handling code. */ static void f_error__is_type(INT32 args) { struct pike_string *array_string; int ret; MAKE_CONST_STRING(array_string, "array"); if (args!=1) SIMPLE_WRONG_NUM_ARGS_ERROR("_is_type", 1); if (TYPEOF(Pike_sp[-args]) != PIKE_T_STRING) SIMPLE_ARG_TYPE_ERROR("_is_type", 1, "string"); ret = Pike_sp[-args].u.string == array_string; pop_n_elems(args); push_int(ret); } /*! @decl void create(string message, @ *! void|array(backtrace_frame|array(mixed)) backtrace) */ static void f_error_create(INT32 args) { struct pike_string *msg; struct array *bt = NULL; get_all_args("create", args, "%W.%A", &msg, &bt); do_free_string(GENERIC_ERROR_THIS->error_message); copy_shared_string(GENERIC_ERROR_THIS->error_message, msg); if (bt) { if (GENERIC_ERROR_THIS->error_backtrace) free_array (GENERIC_ERROR_THIS->error_backtrace); add_ref (GENERIC_ERROR_THIS->error_backtrace = bt); } else { f_backtrace(0); push_int (1); o_range2 (RANGE_LOW_OPEN|RANGE_HIGH_FROM_END); assign_to_short_svalue ((union anything *)&GENERIC_ERROR_THIS->error_backtrace, PIKE_T_ARRAY, Pike_sp-1); pop_stack(); } pop_n_elems(args); } /*! @endclass */ /*! @endmodule */ #ifdef ERROR_DEBUG #define DWERROR(...) fprintf(stderr, __VA_ARGS__) #else /* !ERROR_DEBUG */ #define DWERROR(...) #endif /* ERROR_DEBUG */ #define INIT_ERROR(FEL)\ va_list foo; \ struct object *o; \ va_start(foo,desc); \ ASSERT_THREAD_SWAPPED_IN(); \ DWERROR("%s(): Throwing a " #FEL " error\n", func); \ o=fast_clone_object(PIKE_CONCAT(FEL,_error_program)) #define ERROR_DONE(FOO) \ PIKE_CONCAT(FOO,_error_va(o,func, \ base_sp, args, \ desc, &foo)); \ va_end(foo) #define ERROR_STRUCT(STRUCT,O) \ ((struct PIKE_CONCAT(STRUCT,_error_struct) *)((O)->storage + PIKE_CONCAT(STRUCT,_error_offset))) #define ERROR_COPY(STRUCT,X) \ ERROR_STRUCT(STRUCT,o)->X=X #define ERROR_COPY_SVALUE(STRUCT,X) do { \ if (X) { \ assign_svalue_no_free( & ERROR_STRUCT(STRUCT,o)->X, X); \ } else { \ SET_SVAL(ERROR_STRUCT(STRUCT, o)->X, PIKE_T_INT, NUMBER_UNDEFINED, \ integer, 0); \ } \ } while (0) /* This prepares the passed object o, which is assumed to inherit * generic_error_program, and throws it: * * o A backtrace is assigned to error_backtrace. * * o If func is specified, a frame is constructed for at the end of * backtrace using it as function name and base_sp[0..args-1] as * arguments. * * o If fmt is specified, an error message is created from it and * fmt_args using string_builder_vsprintf. (fmt_args is passed as a * va_list pointer to be able to pass NULL if fmt is NULL.) */ /* coverity[+kill] */ PMOD_EXPORT DECLSPEC(noreturn) void generic_error_va( struct object *o, const char *func, const struct svalue *base_sp, int args, const char *fmt, va_list *fmt_args) { struct generic_error_struct *err = get_storage (o, generic_error_program); #ifdef PIKE_DEBUG if (!err) Pike_fatal ("Got an object which doesn't inherit generic_error_program.\n"); #endif if(in_error) { const char *tmp=in_error; in_error=0; Pike_fatal("Recursive error() calls, original error: %s", tmp); } in_error = fmt ? fmt : "no error message"; if (fmt) { struct string_builder s; init_string_builder(&s, 0); string_builder_vsprintf(&s, fmt, *fmt_args); #if 0 if (!master_program) { fprintf(stderr, "ERROR: %s\n", s.s->str); } #endif if (err->error_message) free_string(err->error_message); err->error_message = finish_string_builder(&s); } f_backtrace(0); if(func) { int i; push_int(0); push_int(0); push_text(func); for (i=0;i<args;i++) push_svalue(base_sp + i); f_aggregate(args + 3); f_aggregate(1); f_add(2); } if(TYPEOF(Pike_sp[-1]) != PIKE_T_ARRAY) Pike_fatal("f_backtrace failed to generate a backtrace!\n"); if (err->error_backtrace) free_array(err->error_backtrace); err->error_backtrace=Pike_sp[-1].u.array; Pike_sp--; dmalloc_touch_svalue(Pike_sp); free_svalue(& throw_value); SET_SVAL(throw_value, PIKE_T_OBJECT, 0, object, o); throw_severity = THROW_ERROR; in_error=0; dmalloc_touch_svalue(& throw_value); pike_throw(); /* Hope someone is catching, or we will be out of balls. */ } /* Throw a preallocated error object. * * NOTE: The object MUST NOT have been cloned by a plain low_clone()! * At least fast_clone_object() MUST have been used, or the object * data must have been properly initialized in some other way! */ /* coverity[+kill] */ PMOD_EXPORT DECLSPEC(noreturn) void throw_error_object( struct object *o, const char *func, struct svalue *base_sp, int args, const char *desc, ...) ATTRIBUTE((noreturn)) { va_list foo; va_start(foo,desc); ASSERT_THREAD_SWAPPED_IN(); DWERROR("%s(): Throwing an error object\n", func); ERROR_DONE(generic); } /* coverity[+kill] */ PMOD_EXPORT DECLSPEC(noreturn) void generic_error( const char *func, struct svalue *base_sp, int args, const char *desc, ...) ATTRIBUTE((noreturn)) { INIT_ERROR(generic); ERROR_DONE(generic); } /* coverity[+kill] */ PMOD_EXPORT DECLSPEC(noreturn) void index_error( const char *func, struct svalue *base_sp, int args, struct svalue *value, struct svalue *index, const char *desc, ...) ATTRIBUTE((noreturn)) { INIT_ERROR(index); ERROR_COPY_SVALUE(index, value); ERROR_COPY_SVALUE(index, index); ERROR_DONE(generic); } /* coverity[+kill] */ PMOD_EXPORT DECLSPEC(noreturn) void bad_arg_error( const char *func, struct svalue *base_sp, int args, int which_argument, const char *expected_type, struct svalue *got_value, const char *desc, ...) ATTRIBUTE((noreturn)) { INIT_ERROR(bad_argument); ERROR_COPY(bad_argument, which_argument); if (expected_type) ERROR_STRUCT(bad_argument,o)->expected_type = make_shared_string(expected_type); else ERROR_STRUCT(bad_argument,o)->expected_type = NULL; ERROR_COPY_SVALUE(bad_argument, got_value); DWERROR("%s():Bad arg %d (expected %s)\n", func, which_argument, expected_type); ERROR_DONE(generic); } /* coverity[+kill] */ PMOD_EXPORT DECLSPEC(noreturn) void math_error( const char *func, struct svalue *base_sp, int args, struct svalue *number, const char *desc, ...) ATTRIBUTE((noreturn)) { INIT_ERROR(math); if(number) { ERROR_COPY_SVALUE(math, number); }else{ SET_SVAL(ERROR_STRUCT(math,o)->number, PIKE_T_INT, NUMBER_UNDEFINED, integer, 0); } ERROR_DONE(generic); } /* coverity[+kill] */ PMOD_EXPORT DECLSPEC(noreturn) void resource_error( const char *func, struct svalue *base_sp, int args, const char *resource_type, size_t howmuch_, const char *desc, ...) ATTRIBUTE((noreturn)) { INT_TYPE howmuch = (INT_TYPE)howmuch_; INIT_ERROR(resource); ERROR_COPY(resource, howmuch); ERROR_STRUCT(resource,o)->resource_type=make_shared_string(resource_type); ERROR_DONE(generic); } /* coverity[+kill] */ PMOD_EXPORT DECLSPEC(noreturn) void permission_error( const char *func, struct svalue *base_sp, int args, const char *permission_type, const char *desc, ...) ATTRIBUTE((noreturn)) { INIT_ERROR(permission); ERROR_STRUCT(permission,o)->permission_type= make_shared_string(permission_type); ERROR_DONE(generic); } /* coverity[+kill] */ PMOD_EXPORT void wrong_number_of_args_error(const char *name, int args, int expected) { if(expected>args) { bad_arg_error (name, Pike_sp-args, args, expected, NULL, NULL, "Too few arguments to %s(). Expected at least %d (got %d).\n", name, expected, args); }else { bad_arg_error (name, Pike_sp-args, args, expected, NULL, NULL, "Too many arguments to %s(). Expected at most %d (got %d).\n", name, expected, args); } } #ifdef PIKE_DEBUG static void gc_check_throw_value(struct callback *UNUSED(foo), void *UNUSED(bar), void *UNUSED(gazonk)) { gc_mark_external_svalues(&throw_value,1," in the throw value"); } #endif void init_error(void) { #define ERR_SETUP #include "errors.h" #ifdef PIKE_DEBUG dmalloc_accept_leak(add_gc_callback(gc_check_throw_value,0,0)); /* recovery_lookup = allocate_mapping(100); */ #endif } void cleanup_error(void) { #ifdef PIKE_DEBUG /* free_mapping(recovery_lookup); */ #endif #define ERR_CLEANUP #include "errors.h" } #endif

pike.git/ src/ error.c > 9d1f548ef0f72add6d586f51e1f0377ec2f955ef [Annotate]