b4n left a comment (geany/geany#4303)
> > I think ctags main should make sure such things don't happen because
> > parsers can be tricky to get right.
>
> Done in the last commit of #4330 and it fixes the hang for me. It was also
> pretty straightforward. What do you think?
That I had that in my diff awaiting cleanup and committing this afternoon
:laughing:
```diff
diff --git a/ctags/main/promise.c b/ctags/main/promise.c
index 01e84f5ca..fa723ca31 100644
--- a/ctags/main/promise.c
+++ b/ctags/main/promise.c
@@ -62,6 +62,39 @@ static void attachPromiseModifier (int promise,
void *data);
+static bool isPromiseRedundant(const char *parser, int lang,
+ unsigned long
startLine, long startCharOffset,
+ unsigned long
endLine, long endCharOffset,
+ unsigned long
sourceLineOffset)
+{
+ int i;
+
+ /* look at previous promises, to check if there's one with the same
language
+ * at the same offsets (or a superset) */
+ for (i = 0; i < promise_count; i++)
+ {
+ struct promise *p = promises + i;
+
+ if (lang != p->lang)
+ continue;
+ if (startLine > p->endLine)
+ continue;
+ if (startLine == p->endLine && startCharOffset >
p->endCharOffset)
+ continue;
+ if (endLine < p->startLine)
+ continue;
+ if (endLine == p->startLine && endCharOffset <
p->startCharOffset)
+ continue;
+
+ verbose("redundant with existing promise %s start(line: %lu,
offset: %ld, srcline: %lu), end(line: %lu, offset: %ld)!\n",
+ parser ? parser : "*",
+ p->startLine, p->startCharOffset, p->sourceLineOffset,
p->endLine, p->endCharOffset);
+ return true;
+ }
+
+ return false;
+}
+
int makePromise (const char *parser,
unsigned long startLine, long startCharOffset,
unsigned long endLine, long endCharOffset,
@@ -96,6 +129,9 @@ int makePromise (const char *parser,
return -1;
}
+ if (isPromiseRedundant (parser, lang, startLine, startCharOffset,
endLine, endCharOffset, sourceLineOffset))
+ return -1;
+
if ( promise_count == promise_allocated)
{
size_t c = promise_allocated? (promise_allocated * 2): 8;
```
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