[Bug d/99337] Sanitizer detect heap-buffer-overflow in checkModFileAlias

[ibuclaw at gdcproject dot org via Gcc-bugs]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=99337

--- Comment #3 from Iain Buclaw <ibuclaw at gdcproject dot org> ---
Fix is trivial

--- a/gcc/d/dmd/dmodule.c
+++ b/gcc/d/dmd/dmodule.c
@@ -195,7 +195,7 @@ static void checkModFileAlias(OutBuffer *buf, OutBuffer
*dotmods,
         const char *m = (*ms)[j];
         const char *q = strchr(m, '=');
         assert(q);
-        if (dotmods->length() <= (size_t)(q - m) &&
memcmp(dotmods->peekChars(), m, q - m) == 0)
+        if (dotmods->length() == (size_t)(q - m) &&
memcmp(dotmods->peekChars(), m, q - m) == 0)
         {
             buf->reset();
             size_t qlen = strlen(q + 1);