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| author | Siddhesh Poyarekar <siddhesh@sourceware.org> | 2020-12-10 16:47:02 +0530 |
|---|---|---|
| committer | Siddhesh Poyarekar <siddhesh@sourceware.org> | 2020-12-31 16:55:21 +0530 |
| commit | 2a08b6e8331a611dc29325bfa6e29fecc9a3a46e (patch) | |
| tree | 7cb26afcc4645260b22bf1c0f01d57668bd7d1f3 /include/features.h | |
| parent | 41f013cef24884604c303435dd1915be2ea5c0e0 (diff) | |
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Warn on unsupported fortification levels
Make the _FORTIFY_SOURCE macro soup in features.h warn about
unsupported fortification levels. For example, it will warn about
_FORTIFY_SOURCE=3 and over with an indication of which level has been
selected.
Co-authored-by: Paul Eggert <eggert@cs.ucla.edu>
Diffstat (limited to 'include/features.h')
| -rw-r--r-- | include/features.h | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/include/features.h b/include/features.h index f3e62d3362..540230b90b 100644 --- a/include/features.h +++ b/include/features.h @@ -398,6 +398,9 @@ # elif !__GNUC_PREREQ (4, 1) # warning _FORTIFY_SOURCE requires GCC 4.1 or later # elif _FORTIFY_SOURCE > 1 +# if _FORTIFY_SOURCE > 2 +# warning _FORTIFY_SOURCE > 2 is treated like 2 on this platform +# endif # define __USE_FORTIFY_LEVEL 2 # else # define __USE_FORTIFY_LEVEL 1 |