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| author |   miod <miod@openbsd.org> | 2015-06-15 17:01:04 +0000 |
|---|---|---|
| committer | miod <miod@openbsd.org> | 2015-06-15 17:01:04 +0000 |
| commit | fdf48840afcb0edb6aa524eb2ece0ee9a2c72776 (patch) | |
| tree | f473ef93bad5771b90052905a8fcd13405490582 | |
| parent | Bring back r1.78 and r1.79, now that ajactouto@'s regression has (diff) | |
| download | wireguard-openbsd-fdf48840afcb0edb6aa524eb2ece0ee9a2c72776.tar.xz wireguard-openbsd-fdf48840afcb0edb6aa524eb2ece0ee9a2c72776.zip | |
Don't error out when an existing typedef is redefined with the same definition;
this is allowed in C11 and 3rd-party software is relying upon this to be
accepted by the compiler.
Nevertheless warn about this if -pedantic.
ok ajacoutot@ deraadt@ millert@
| -rw-r--r-- | gnu/gcc/gcc/c-decl.c | 14 |
1 files changed, 11 insertions, 3 deletions
diff --git a/gnu/gcc/gcc/c-decl.c b/gnu/gcc/gcc/c-decl.c index 9762d187753..042a2e1291c 100644 --- a/gnu/gcc/gcc/c-decl.c +++ b/gnu/gcc/gcc/c-decl.c @@ -1285,9 +1285,17 @@ diagnose_mismatched_decls (tree newdecl, tree olddecl, if (DECL_IN_SYSTEM_HEADER (newdecl) || DECL_IN_SYSTEM_HEADER (olddecl)) return true; /* Allow OLDDECL to continue in use. */ - error ("redefinition of typedef %q+D", newdecl); - locate_old_decl (olddecl, error); - return false; + if (pedantic) + { + pedwarn ("redefinition of typedef %q+D", newdecl); + if (flag_pedantic_errors) + { + locate_old_decl (olddecl, error); + return false; + } + } + + return true; } /* Function declarations can either be 'static' or 'extern' (no |