#14 closed defect (fixed)

Allow programs to override libc symbols

Reported by:	Vladimír Štill	Owned by:	mornfall
Priority:	major	Milestone:	5.0
Component:	DiOS	Keywords:
Cc:

Description

int write() { return 42; }
int main() { return write(); }

This code can be normally compiled by gcc. But it does not load in DIVINE:

error: Linking globals named 'write': symbol multiply defined!

Change History (4)

comment:1 Changed 5 years ago by mornfall

Component:	bench → divcc
Owner:	changed from mornfall to blurrymoi
Status:	new → assigned
Summary:	Fix linking programs that define symbols with names of libc function → Allow programs to override libc symbols

comment:2 Changed 5 years ago by mornfall

Component:	divcc → DiOS
Owner:	changed from blurrymoi to mornfall
Status:	assigned → accepted

The way this is normally implemented is that things like 'write' (which are part of POSIX, but not part of ISO C) are weak aliases to internal symbols (like _libc_write).

comment:3 Changed 5 years ago by blurrymoi

Resolution:	→ fixed
Status:	accepted → closed

comment:4 Changed 5 years ago by mornfall

Milestone:	future → 5.0

Milestone renamed

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