Open
Description
Consider the following diff:
--- a/src/secp256k1.c
+++ b/src/secp256k1.c
@@ -765,7 +765,9 @@ int secp256k1_ec_pubkey_tweak_mul(const secp256k1_context* ctx, secp256k1_pubkey
return ret;
}
+void undefined_function(void);
int secp256k1_context_randomize(secp256k1_context* ctx, const unsigned char *seed32) {
+ undefined_function();
VERIFY_CHECK(ctx != NULL);
ARG_CHECK(secp256k1_context_is_proper(ctx));
It compiles fine:
$ ./autogen.sh
$ ./configure
$ make libsecp256k1.la
However, it should fail like that:
$ ./autogen.sh
$ ./configure LDFLAGS="-Wl,--no-undefined"
$ make libsecp256k1.la
CC src/libsecp256k1_la-secp256k1.lo
CC src/libsecp256k1_precomputed_la-precomputed_ecmult.lo
CC src/libsecp256k1_precomputed_la-precomputed_ecmult_gen.lo
CCLD libsecp256k1_precomputed.la
CCLD libsecp256k1.la
/usr/bin/ld: src/.libs/libsecp256k1_la-secp256k1.o: in function `secp256k1_context_randomize':
/home/hebasto/git/secp256k1/secp256k1/src/secp256k1.c:770:(.text+0xee01): undefined reference to `undefined_function'
collect2: error: ld returned 1 exit status
make: *** [Makefile:1020: libsecp256k1.la] Error 1