From: Thomas Weißschuh Date: Sat, 19 Apr 2025 10:46:24 +0000 (+0200) Subject: selftests/nolibc: enable UBSAN if available X-Git-Url: https://www.infradead.org/git/?a=commitdiff_plain;h=8509b5c9fa981f7e17874605af86d26159310d3c;p=users%2Fdwmw2%2Flinux.git selftests/nolibc: enable UBSAN if available UBSAN detects undefined behaviour at runtime. To avoid introduction of new UB, enable UBSAN for nolibc-test. By signalling detected errors through traps no runtime dependency is necessary. Signed-off-by: Thomas Weißschuh Acked-by: Willy Tarreau Link: https://lore.kernel.org/r/20250419-nolibc-ubsan-v2-7-060b8a016917@weissschuh.net --- diff --git a/tools/testing/selftests/nolibc/Makefile b/tools/testing/selftests/nolibc/Makefile index aa05c1faac20d..94f3e8be7a68f 100644 --- a/tools/testing/selftests/nolibc/Makefile +++ b/tools/testing/selftests/nolibc/Makefile @@ -189,9 +189,10 @@ ifeq ($(origin XARCH),command line) CFLAGS_XARCH = $(CFLAGS_$(XARCH)) endif CFLAGS_STACKPROTECTOR ?= $(call cc-option,-mstack-protector-guard=global $(call cc-option,-fstack-protector-all)) +CFLAGS_SANITIZER ?= $(call cc-option,-fsanitize=undefined -fsanitize-trap=all) CFLAGS ?= -Os -fno-ident -fno-asynchronous-unwind-tables -std=c89 -W -Wall -Wextra \ $(call cc-option,-fno-stack-protector) $(call cc-option,-Wmissing-prototypes) \ - $(CFLAGS_XARCH) $(CFLAGS_STACKPROTECTOR) $(CFLAGS_EXTRA) + $(CFLAGS_XARCH) $(CFLAGS_STACKPROTECTOR) $(CFLAGS_SANITIZER) $(CFLAGS_EXTRA) LDFLAGS := LIBGCC := -lgcc