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grovel around for the source file and line of an undefined def to give

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better diagnostics
This commit is contained in:
Bill Currie 2003-08-06 21:36:07 +00:00
parent 56e79e32b5
commit 4a680bf981
1 changed files with 41 additions and 1 deletions
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42
tools/qfcc/source/linker.c
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@ -798,6 +798,46 @@ linker_add_lib (const char *libname)
return 0;
}
static void
undefined_def (qfo_def_t *def)
{
qfo_def_t line_def;
int i;
qfo_reloc_t *reloc = relocs.relocs + def->relocs;
for (i = 0; i < def->num_relocs; i++, reloc++) {
if (reloc->type == rel_op_a_def || reloc->type == rel_op_b_def
|| reloc->type == rel_op_c_def) {
qfo_func_t *func = funcs.funcs;
qfo_func_t *best = func;
int best_dist = reloc->ofs - func->code;
pr_lineno_t *line;
while (best_dist && func - funcs.funcs < funcs.num_funcs) {
if (func->code <= reloc->ofs) {
if (best_dist < 0 || reloc->ofs - func->code < best_dist) {
best = func;
best_dist = reloc->ofs - func->code;
}
}
func++;
}
line = lines.lines + best->line_info;
line_def.file = best->file;
line_def.line = best->line;
if (!line->line && line->fa.func == best - funcs.funcs) {
while (line - lines.lines < lines.num_lines - 1 && line[1].line
&& line[1].fa.addr <= reloc->ofs)
line++;
line_def.line = line->line + best->line;
}
def_error (&line_def, "undefined symbol %s", STRING (def->name));
} else {
def_error (def, "undefined symbol %s", STRING (def->name));
}
}
}
qfo_t *
linker_finish (void)
{
@ -833,7 +873,7 @@ linker_finish (void)
undef_defs = (defref_t **) Hash_GetList (extern_defs);
for (defref = undef_defs; *defref; defref++) {
qfo_def_t *def = deref_def (*defref, &global_defs);
def_error (def, "undefined symbol %s", STRING (def->name));
undefined_def (def);
}
free (undef_defs);
if (pr.error_count)