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gcov: add support for GCC 15

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commit ec4d11fc4b2dd4a2fa8c9d801ee9753b74623554 upstream.

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>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Peter Oberparleiter 2025-10-28 12:51:25 +01:00 • committed by Greg Kroah-Hartman
commit b7a984e9a2
1 changed files with 3 additions and 1 deletions
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4
kernel/gcov/gcc_4_7.c
View file

@ -19,7 +19,9 @@
#include <linux/vmalloc.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