* Why the cplusplus doesn't support -D_FORTIFY_SOURCE
@ 2020-08-24 6:53 sword_iii
0 siblings, 0 replies; 2+ messages in thread
From: sword_iii @ 2020-08-24 6:53 UTC (permalink / raw)
To: newlib
In the sys/features.h, the "__SSP_FORTIFY_LEVEL" will not be defined when thesource file is cpluspluse.#if _FORTIFY_SOURCE > 0 && !defined(__cplusplus) && !defined(__lint__) && \ (__OPTIMIZE__ > 0 || defined(__clang__)) && __GNUC_PREREQ__(4, 1)# if _FORTIFY_SOURCE > 1# define __SSP_FORTIFY_LEVEL 2# else# define __SSP_FORTIFY_LEVEL 1# endif#else# define __SSP_FORTIFY_LEVEL 0#endifSo, if defined cplusplus, the __SPP_FORTIFY_LEVEL is always 0.My question is why disable this feature, if enable this feature forcely, is there any possible issue?Br,Yingchun
^ permalink raw reply [flat|nested] 2+ messages in thread
* Why the cplusplus doesn't support -D_FORTIFY_SOURCE
@ 2020-08-24 7:14 Yingchun Li
0 siblings, 0 replies; 2+ messages in thread
From: Yingchun Li @ 2020-08-24 7:14 UTC (permalink / raw)
To: newlib
Sorry, My previous post
https://sourceware.org/pipermail/newlib/2020/017909.html
shows the wrong format, sorry for that.
Now post it again.
In the sys/features.h, the "__SSP_FORTIFY_LEVEL" will not be defined when
the source file is cplusplus.
#if _FORTIFY_SOURCE > 0 && !defined(__cplusplus) && !defined(__lint__)
&& \ (__OPTIMIZE__ > 0 || defined(__clang__)) && __GNUC_PREREQ__(4,
1)
# if _FORTIFY_SOURCE > 1
# define __SSP_FORTIFY_LEVEL 2# else# define __SSP_FORTIFY_LEVEL 1
# endif
#else
# define __SSP_FORTIFY_LEVEL 0
#endif
So, if defined cplusplus, the __SPP_FORTIFY_LEVEL is always 0.My question is why
disable this feature, if enable this feature forcely, is there any
possible issue?
Br,Yingchun
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