Arnaldo Carvalho de Melo 2333cfa9f8 perf hist stdio: Do bounds check when printing callchains to avoid UB with new gcc versions ... Do a simple bounds check to avoid this on new gcc versions: 31 15.81 fedora:rawhide : FAIL gcc version 15.0.1 20250225 (Red Hat 15.0.1-0) (GCC) In function 'callchain__fprintf_left_margin', inlined from 'callchain__fprintf_graph.constprop' at ui/stdio/hist.c:246:12: ui/stdio/hist.c:27:39: error: iteration 2147483647 invokes undefined behavior [-Werror=aggressive-loop-optimizations] 27 | for (i = 0; i < left_margin; i++) | ~^~ ui/stdio/hist.c:27:23: note: within this loop 27 | for (i = 0; i < left_margin; i++) | ~~^~~~~~~~~~~~~ cc1: all warnings being treated as errors Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com> Link: https://lore.kernel.org/r/20250310194534.265487-4-acme@kernel.org Signed-off-by: Namhyung Kim <namhyung@kernel.org>		2025-03-13 00:30:14 -07:00
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hist.c	perf hist stdio: Do bounds check when printing callchains to avoid UB with new gcc versions	2025-03-13 00:30:14 -07:00