[gcc r16-7835] testsuite: add -Wno-overflow to avoid warning in test [PR123191]

[Torbjorn Svensson]

https://gcc.gnu.org/g:d5a9b9e08deae3a98f155c2e23f8667aaa471d2d

commit r16-7835-gd5a9b9e08deae3a98f155c2e23f8667aaa471d2d
Author: Torbjörn SVENSSON <torbjorn.svensson@foss.st.com>
Date:   Thu Feb 26 17:37:25 2026 +0100

    testsuite: add -Wno-overflow to avoid warning in test [PR123191]
    
    Without -Wno-overflow, for arm-none-eabi targets, I see warnings like:
    coreutils-group_number.c:13:21: warning: conversion from 'long long unsigned int' to 'size_t' {aka 'unsigned int'} changes value from '18446744073709551615' to '4294967295' [-Woverflow]
    
    gcc/testsuite/ChangeLog:
    
            PR testsuite/123191
            * c-c++-common/analyzer/coreutils-group_number.c: Add
            -Wno-overflow.
    
    Signed-off-by: Torbjörn SVENSSON <torbjorn.svensson@foss.st.com>

Diff:
---
 gcc/testsuite/c-c++-common/analyzer/coreutils-group_number.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/gcc/testsuite/c-c++-common/analyzer/coreutils-group_number.c b/gcc/testsuite/c-c++-common/analyzer/coreutils-group_number.c
index 95fa6a211b08..f5976e93a2c0 100644
--- a/gcc/testsuite/c-c++-common/analyzer/coreutils-group_number.c
+++ b/gcc/testsuite/c-c++-common/analyzer/coreutils-group_number.c
@@ -2,6 +2,7 @@
 
 /* { dg-additional-options "-Wno-analyzer-too-complex" } */
 /* { dg-additional-options "-Wno-analyzer-symbol-too-complex" } */
+/* { dg-additional-options "-Wno-overflow" } */
 
 typedef __SIZE_TYPE__ size_t;