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| author | Nick Mathewson <nickm@torproject.org> | 2016-05-30 14:49:50 -0400 |
|---|---|---|
| committer | Nick Mathewson <nickm@torproject.org> | 2016-06-11 10:11:53 -0400 |
| commit | ad16c5528663489000ee3a7454a9bbff2e41f7f0 (patch) | |
| tree | 1087aa7c816841f36eeaf53d411e1826a1b9d1f4 /configure.ac | |
| parent | 4caed2424a449712c8ac267d521563d31536aa6a (diff) | |
| download | tor-ad16c5528663489000ee3a7454a9bbff2e41f7f0.tar.gz tor-ad16c5528663489000ee3a7454a9bbff2e41f7f0.zip | |
Use -Wstrict-overflow=2 on gcc5+.
Diffstat (limited to 'configure.ac')
| -rw-r--r-- | configure.ac | 9 |
1 files changed, 7 insertions, 2 deletions
diff --git a/configure.ac b/configure.ac index f21d9de532..abed17f096 100644 --- a/configure.ac +++ b/configure.ac @@ -1701,7 +1701,7 @@ AC_COMPILE_IFELSE([AC_LANG_PROGRAM([], [ AC_COMPILE_IFELSE([AC_LANG_PROGRAM([], [ #if !defined(__GNUC__) || (__GNUC__ < 6) #error -#endif])], have_gcc6=yes, have_gcc5=no) +#endif])], have_gcc6=yes, have_gcc6=no) save_CFLAGS="$CFLAGS" CFLAGS="$CFLAGS -Wshorten-64-to-32" @@ -1734,9 +1734,13 @@ AC_COMPILE_IFELSE([AC_LANG_PROGRAM([], [ if test "x$have_gcc42" = "xyes"; then # These warnings break gcc 4.0.2 and work on gcc 4.2 # XXXX020 See if any of these work with earlier versions. - CFLAGS="$CFLAGS -Waddress -Wmissing-noreturn -Wstrict-overflow=1" + CFLAGS="$CFLAGS -Waddress -Wmissing-noreturn" + fi + if test "x$have_gcc42" = "xyes" && test "x$have_gcc5" != "xyes"; then + CFLAGS="$CFLAGS -Wstrict-overflow=1" # We used to use -Wstrict-overflow=5, but that breaks us heavily under 4.3. + # Save it for GCC 5 where they improved the testing. fi if test "x$have_gcc42" = "xyes" && test "x$have_clang" = "xno"; then @@ -1775,6 +1779,7 @@ AC_COMPILE_IFELSE([AC_LANG_PROGRAM([], [ if test "x$have_gcc5" = "xyes"; then CFLAGS="$CFLAGS -Wc99-c11-compat -Wshift-count-negative -Wshift-count-overflow -Wsizeof-array-argument -Wswitch-bool" + CFLAGS="$CFLAGS -Wstrict-overflow=2" fi if test "x$have_gcc6" = "xyes"; then |