+ gcov-add-support-for-gcc-15.patch added to mm-hotfixes-unstable branch

+ gcov-add-support-for-gcc-15.patch added to mm-hotfixes-unstable branch

[Andrew Morton]

The patch titled
     Subject: gcov: add support for GCC 15
has been added to the -mm mm-hotfixes-unstable branch.  Its filename is
     gcov-add-support-for-gcc-15.patch

This patch will shortly appear at
     https://git.kernel.org/pub/scm/linux/kernel/git/akpm/25-new.git/tree/patches/gcov-add-support-for-gcc-15.patch

This patch will later appear in the mm-hotfixes-unstable branch at
    git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm

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------------------------------------------------------
From: Peter Oberparleiter <oberpar@linux.ibm.com>
Subject: gcov: add support for GCC 15
Date: Tue, 28 Oct 2025 12:51:25 +0100

Using gcov on kernels compiled with GCC 15 results in truncated 16-byte
long .gcda files with no usable data.  To fix this, update GCOV_COUNTERS
to match the value defined by GCC 15.

Tested with GCC 14.3.0 and GCC 15.2.0.

Link: https://lkml.kernel.org/r/20251028115125.1319410-1-oberpar@linux.ibm.com
Signed-off-by: Peter Oberparleiter <oberpar@linux.ibm.com>
Reported-by: Matthieu Baerts <matttbe@kernel.org>
Closes: https://github.com/linux-test-project/lcov/issues/445
Tested-by: Matthieu Baerts <matttbe@kernel.org>
Cc: <stable@vger.kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
---

 kernel/gcov/gcc_4_7.c |    4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

--- a/kernel/gcov/gcc_4_7.c~gcov-add-support-for-gcc-15
+++ a/kernel/gcov/gcc_4_7.c
@@ -18,7 +18,9 @@
 #include <linux/mm.h>
 #include "gcov.h"
 
-#if (__GNUC__ >= 14)
+#if (__GNUC__ >= 15)
+#define GCOV_COUNTERS			10
+#elif (__GNUC__ >= 14)
 #define GCOV_COUNTERS			9
 #elif (__GNUC__ >= 10)
 #define GCOV_COUNTERS			8
_

Patches currently in -mm which might be from oberpar@linux.ibm.com are

gcov-add-support-for-gcc-15.patch