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[Bug ld/23078] Weak alias to a weak symbol is not resolved correctly.
From: |
pftbest at gmail dot com |
Subject: |
[Bug ld/23078] Weak alias to a weak symbol is not resolved correctly. |
Date: |
Thu, 19 Jul 2018 04:07:05 +0000 |
https://sourceware.org/bugzilla/show_bug.cgi?id=23078
--- Comment #2 from Vadzim Dambrouski <pftbest at gmail dot com> ---
Hello Nick,
Thank you for suggestion, I've tried weakref, and does help with the case I
have posted above, but it still doesn't do exactly what I need.
Here is updated code:
// main.c -------------------
void _start() {}
void DEFAULT_HANDLER() {
*((int*)0x10) = 5;
}
void BUS_FAULT() {
*((int*)0x10) = 7;
}
// foo.c --------------------
__attribute__((weak)) void DEFAULT_HANDLER() {
*((int*)0x10) = 1;
}
static __attribute__((weakref ("DEFAULT_HANDLER"))) void HARD_FAULT();
static __attribute__((weakref ("DEFAULT_HANDLER"))) void BUS_FAULT();
void (*VECTORS[])() = {
HARD_FAULT,
BUS_FAULT,
};
// ----------------------
In this new example I have created a strong symbols for both default handler
and for one of specific handlers. I expect that VECTORS table would contain
pointers to functions 5 and 7, but in practice it contains pointers to 5 and 5.
This is not what I need, unfortunately.
Regards,
Vadzim
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