From f588c1d4169655ddb1b204ce63d4a7bb4d70a55c Mon Sep 17 00:00:00 2001
From: Alfredo Tupone <tupone@gentoo.org>
Date: Wed, 3 Dec 2025 08:10:13 +0100
Subject: [PATCH] dev-ada/gprbuild: add gcc:16 support

Signed-off-by: Alfredo Tupone <tupone@gentoo.org>
---
 .../files/gprbuild-25.0.0-gcc16.patch         | 22 +++++++++++++++++++
 dev-ada/gprbuild/gprbuild-25.0.0-r5.ebuild    |  7 ++++--
 2 files changed, 27 insertions(+), 2 deletions(-)
 create mode 100644 dev-ada/gprbuild/files/gprbuild-25.0.0-gcc16.patch

diff --git a/dev-ada/gprbuild/files/gprbuild-25.0.0-gcc16.patch b/dev-ada/gprbuild/files/gprbuild-25.0.0-gcc16.patch
new file mode 100644
index 0000000000000..a0ee932b06c8e
--- /dev/null
+++ b/dev-ada/gprbuild/files/gprbuild-25.0.0-gcc16.patch
@@ -0,0 +1,22 @@
+--- a/gpr/src/gpr-compilation-process.adb	2025-12-02 20:16:02.856971670 +0100
++++ b/gpr/src/gpr-compilation-process.adb	2025-12-02 20:16:18.920776145 +0100
+@@ -41,7 +41,7 @@
+    --  A set of key=value
+ 
+    package Prj_Maps is new Containers.Indefinite_Ordered_Maps
+-     (String, Env_Maps.Map, Env_Maps."<", Env_Maps."=");
++     (String, Env_Maps.Map, "<", Env_Maps."=");
+    --  A set of project+language=map
+ 
+    function "<" (Left, Right : Id) return Boolean is
+--- a/gpr/src/gpr-compilation-protocol.adb	2025-12-02 20:38:54.332285274 +0100
++++ b/gpr/src/gpr-compilation-protocol.adb	2025-12-02 20:39:35.690782208 +0100
+@@ -978,7 +978,7 @@
+       Set_File_Last_Modify_Time_Stamp
+         (Path_Name,
+          To_Ada
+-           (time_t
++           (Long_Long_Integer
+               (Conversions.To_Unix_Time
+                  (Time_Of
+                     (TS (1, 4), TS (5, 6), TS (7, 8),
diff --git a/dev-ada/gprbuild/gprbuild-25.0.0-r5.ebuild b/dev-ada/gprbuild/gprbuild-25.0.0-r5.ebuild
index 361c1f5c6b3af..1fde33c0b8050 100644
--- a/dev-ada/gprbuild/gprbuild-25.0.0-r5.ebuild
+++ b/dev-ada/gprbuild/gprbuild-25.0.0-r5.ebuild
@@ -3,7 +3,7 @@
 
 EAPI=8
 
-ADA_COMPAT=( gcc_{12..15} )
+ADA_COMPAT=( gcc_{12..16} )
 PYTHON_COMPAT=( python3_{10..13} pypy3{,_11} )
 inherit ada python-any-r1 multiprocessing
 
@@ -32,7 +32,10 @@ BDEPEND="doc? (
 )"
 
 REQUIRED_USE="${ADA_REQUIRED_USE}"
-PATCHES=( "${FILESDIR}"/${PN}-22.0.0-gentoo.patch )
+PATCHES=(
+	"${FILESDIR}"/${PN}-22.0.0-gentoo.patch
+	"${FILESDIR}"/${P}-gcc16.patch
+)
 
 python_check_deps() {
 	python_has_version "dev-python/sphinx[${PYTHON_USEDEP}]"