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GET /api/patches/2226539/?format=api
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{
    "id": 2226539,
    "url": "http://patchwork.ozlabs.org/api/patches/2226539/?format=api",
    "web_url": "http://patchwork.ozlabs.org/project/gcc/patch/1954864.tdWV9SEqCh@arcturus/",
    "project": {
        "id": 17,
        "url": "http://patchwork.ozlabs.org/api/projects/17/?format=api",
        "name": "GNU Compiler Collection",
        "link_name": "gcc",
        "list_id": "gcc-patches.gcc.gnu.org",
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    "msgid": "<1954864.tdWV9SEqCh@arcturus>",
    "list_archive_url": null,
    "date": "2026-04-22T15:22:37",
    "name": "[Ada] Fix problematic trailing separator for Ada.Directories.Containing_Directory",
    "commit_ref": null,
    "pull_url": null,
    "state": "new",
    "archived": false,
    "hash": "30c5654df44356836b9f84dbd73acf2a1f31dc55",
    "submitter": {
        "id": 78832,
        "url": "http://patchwork.ozlabs.org/api/people/78832/?format=api",
        "name": "Eric Botcazou",
        "email": "botcazou@adacore.com"
    },
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        {
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            "url": "http://patchwork.ozlabs.org/api/series/501032/?format=api",
            "web_url": "http://patchwork.ozlabs.org/project/gcc/list/?series=501032",
            "date": "2026-04-22T15:22:37",
            "name": "[Ada] Fix problematic trailing separator for Ada.Directories.Containing_Directory",
            "version": 1,
            "mbox": "http://patchwork.ozlabs.org/series/501032/mbox/"
        }
    ],
    "comments": "http://patchwork.ozlabs.org/api/patches/2226539/comments/",
    "check": "pending",
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        "From": "Eric Botcazou <botcazou@adacore.com>",
        "X-Google-Original-From": "Eric Botcazou <ebotcazou@adacore.com>",
        "To": "gcc-patches@gcc.gnu.org",
        "Subject": "[Ada] Fix problematic trailing separator for\n Ada.Directories.Containing_Directory",
        "Date": "Wed, 22 Apr 2026 17:22:37 +0200",
        "Message-ID": "<1954864.tdWV9SEqCh@arcturus>",
        "MIME-Version": "1.0",
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        "Errors-To": "gcc-patches-bounces~incoming=patchwork.ozlabs.org@gcc.gnu.org"
    },
    "content": "Adding a trailing directory separator should arguably not change the result of \na call to Ada.Directories.Containing_Directory.\n\nTested on x86-64/Linux, applied on the mainline.\n\n\n2026-04-22  Eric Botcazou  <ebotcazou@adacore.com>\n\n\tPR ada/85766\n\t* libgnat/a-direct.adb (Containing_Directory): Streamline and strip\n\ta trailing directory separator from the name.\n\n\n2026-04-22  Eric Botcazou  <ebotcazou@adacore.com>\n\n\t* gnat.dg/directory1.adb: New test.",
    "diff": "diff --git a/gcc/ada/libgnat/a-direct.adb b/gcc/ada/libgnat/a-direct.adb\nindex 567fe44ec68..971790c1b95 100644\n--- a/gcc/ada/libgnat/a-direct.adb\n+++ b/gcc/ada/libgnat/a-direct.adb\n@@ -228,27 +228,36 @@ package body Ada.Directories is\n       if not Is_Valid_Path_Name (Name) then\n          raise Name_Error with \"invalid path name \"\"\" & Name & '\"';\n \n+      --  Second, If Name indicates a root directory, raise Use_Error, because\n+      --  it has no containing directory.\n+\n+      elsif Is_Parent_Directory_Name (Name)\n+        or else Is_Current_Directory_Name (Name)\n+        or else Is_Root_Directory_Name (Name)\n+      then\n+         raise Use_Error with\n+          \"directory \"\"\" & Name & \"\"\" has no containing directory\";\n+\n+      --  Otherwise, the common case\n+\n       else\n          declare\n             Last_DS : constant Natural :=\n               Strings.Fixed.Index (Name, Dir_Seps, Going => Strings.Backward);\n \n          begin\n-            --  If Name indicates a root directory, raise Use_Error, because\n-            --  it has no containing directory.\n+            --  If there is no directory separator, return \".\", representing\n+            --  the current working directory.\n \n-            if Is_Parent_Directory_Name (Name)\n-              or else Is_Current_Directory_Name (Name)\n-              or else Is_Root_Directory_Name (Name)\n-            then\n-               raise Use_Error with\n-                 \"directory \"\"\" & Name & \"\"\" has no containing directory\";\n+            if Last_DS = 0 then\n+               return \".\";\n \n-            elsif Last_DS = 0 then\n-               --  There is no directory separator, so return \".\", representing\n-               --  the current working directory.\n+            --  If the directory separator is last, then Name is a directory\n+            --  and we recurse after stripping the separator.\n \n-               return \".\";\n+            elsif Last_DS = Name'Last then\n+               return\n+                 Containing_Directory (Name (Name'First .. Name'Last - 1));\n \n             else\n                declare\n",
    "prefixes": [
        "Ada"
    ]
}