Fix $sscanf/$fscanf returning -1 after a partial match (#8457) (#8459)

2026-10-06 01:54:01 +02:00 · 2026-09-23 05:35:17 -04:00
parent 39e2d8e853
commit fe4b3bdec4
2 changed files with 16 additions and 2 deletions
@@ -1832,8 +1832,8 @@ IData _vl_vsscanf(FILE* fp,  // If a fscanf
    return got;

 done:
-    // Scan stopped early, return parsed or EOF
-    if (_vl_vsss_eof(fp, floc)) return -1;
+    // Scan stopped early; EOF only if input ended before the first conversion
+    if (got == 0 && _vl_vsss_eof(fp, floc)) return -1;
    return got;
 }