8000 gh-112301: Add -Wformat=2 compiler option to NODIST by nohlson · Pull Request #122474 · python/cpython · GitHub
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gh-112301: Add -Wformat=2 compiler option to NODIST #122474

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2 changes: 1 addition & 1 deletion .github/workflows/reusable-ubuntu.yml
Original file line number Diff line number Diff line change
Expand Up @@ -80,7 +80,7 @@ jobs:
working-directory: ${{ env.CPYTHON_BUILDDIR }}
run: make pythoninfo
- name: Check compiler warnings
run: python Tools/build/check_warnings.py --compiler-output-file-path=${{ env.CPYTHON_BUILDDIR }}/compiler_output.txt --warning-ignore-file-path ${GITHUB_WORKSPACE}/Tools/build/.warningignore_ubuntu
run: python Tools/build/check_warnings.py --compiler-output-file-path=${{ env.CPYTHON_BUILDDIR }}/compiler_output.txt --warning-ignore-file-path ${GITHUB_WORKSPACE}/Tools/build/.warningignore_ubuntu --fail-on-regression
- name: Remount sources writable for tests
# some tests write to srcdir, lack of pyc files slows down testing
run: sudo mount $CPYTHON_RO_SRCDIR -oremount,rw
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Original file line number Diff line number Diff line change
@@ -0,0 +1 @@
Add -Wformat=2 to NODIST build flags to warn about potential vulnerabilities related to format strings.
39 changes: 39 additions & 0 deletions configure

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1 change: 1 addition & 0 deletions configure.ac
Original file line number Diff line number Diff line change
Expand Up @@ -2510,6 +2510,7 @@ if test "$disable_safety" = "no"
then
AX_CHECK_COMPILE_FLAG([-fstack-protector-strong], [CFLAGS_NODIST="$CFLAGS_NODIST -fstack-protector-strong"], [AC_MSG_WARN([-fstack-protector-strong not supported])], [-Werror])
AX_CHECK_COMPILE_FLAG([-Wtrampolines], [CFLAGS_NODIST="$CFLAGS_NODIST -Wtrampolines"], [AC_MSG_WARN([-Wtrampolines not supported])], [-Werror])
AX_CHECK_COMPILE_FLAG([-Wformat -Wformat=2], [CFLAGS_NODIST="$CFLAGS_NODIST -Wformat -Wformat=2"], [AC_MSG_WARN([-Wformat and -Wformat=2 not supported])], [-Werror])
fi

AC_MSG_CHECKING([for --enable-slower-safety])
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