In GNU libiconv, I see these warnings: ../../srclib/careadlinkat.c:178:5: warning: #warning "GCC might issue a bogus -Wreturn-local-addr warning here." [-Wcpp] ../../srclib/careadlinkat.c:179:5: warning: #warning "See <https://gcc.gnu.org/bugzilla/show_bug.cgi?id=93644>." [-Wcpp] ../../srclib/careadlinkat.c:182:10: warning: function may return address of local variable [-Wreturn-local-addr]
As noted in https://gcc.gnu.org/bugzilla/show_bug.cgi?id=93644#c19 , for GCC 12 or newer, the "#pragma GCC diagnostic ignored" succeeds in silencing the warning. So let's use it. 2023-05-19 Bruno Haible <br...@clisp.org> careadlinkat: Silence gcc warning for GCC ≥ 12. * lib/careadlinkat.c: For GCC 12 or newer, use "#pragma GCC diagnostic ignored" to silence the warning. diff --git a/lib/careadlinkat.c b/lib/careadlinkat.c index 359d497396..72c38e353e 100644 --- a/lib/careadlinkat.c +++ b/lib/careadlinkat.c @@ -55,7 +55,9 @@ enum { STACK_BUF_SIZE = 1024 }; When the GCC bug is fixed this workaround should be limited to the broken GCC versions. */ #if _GL_GNUC_PREREQ (10, 1) -# if defined GCC_LINT || defined lint +# if _GL_GNUC_PREREQ (12, 1) +# pragma GCC diagnostic ignored "-Wreturn-local-addr" +# elif defined GCC_LINT || defined lint __attribute__ ((__noinline__)) # elif __OPTIMIZE__ && !__NO_INLINE__ # define GCC_BOGUS_WRETURN_LOCAL_ADDR
