oysteikt/heimdal
0
0
Fork 0
Code Issues 5 Pull Requests Releases Activity

rewrite fallthrough to HEIM_FALLTHROUGH to deal with new Apple SDKs

Browse Source 
Apple clang version 14.0.0 (clang-1400.0.17.3.1) fails the build
because stds.h defines `fallthrough` as a macro which is then
expanded when base.h evaluates

  # if __has_attribute(fallthrough) && __clang_major__ >= 5

The macOS SDK defines `DISPATCH_FALLTHROUGH` as the macro instead
of `fallthrough`.

This change replaces the use of `fallthrough` in the tree with
`HEIM_FALLTHROUGH` and updates the declaration in configure logic
to define `HEIM_FALLTHROUGH` based upon existing definitions
(if any) of `fallthrough` or `DISPATCH_FALLTHROUGH`.
This commit is contained in:
Daria Phoebe Brashear
2022-09-16 09:57:24 -04:00
committed by Jeffrey Altman
parent f6d26bce66
commit 133f517482
21 changed files with 48 additions and 44 deletions
Download Patch File Download Diff File Expand all files Collapse all files

20
configure.ac
View File

@@ -505,16 +505,20 @@ rk_WIN32_EXPORT(BUILD_ROKEN_LIB, ROKEN_LIB)
rk_WIN32_EXPORT(BUILD_GSSAPI_LIB, GSSAPI_LIB)
rk_WIN32_EXPORT(BUILD_KDC_LIB, KDC_LIB)
dnl Deal with switch FALLTHROUGH
dnl Deal with switch fallthrough warnings
AH_TOP([
#if defined(__GNUC__)
#if __GNUC__ >= 7
# define fallthrough __attribute__((fallthrough))
#if defined(DISPATCH_FALLTHROUGH)
# define HEIM_FALLTHROUGH DISPATCH_FALLTHROUGH
#else
# define fallthrough do {} while (0) /* fallthrough */
#endif
#else
# define fallthrough do {} while (0) /* fallthrough */
# if defined(__GNUC__)
# if __GNUC__ >= 7
# define HEIM_FALLTHROUGH __attribute__((fallthrough))
# else
# define HEIM_FALLTHROUGH do {} while (0) /* fallthrough */
# endif
# else
# define HEIM_FALLTHROUGH do {} while (0) /* fallthrough */
# endif
#endif
])