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Re: .rodata section defined as Writeable as well as Text program header

From: Nick Clifton <nickc at redhat dot com>
To: Alex Kogan <KOGAN at il dot ibm dot com>
Cc: binutils at sources dot redhat dot com, Yaakov Yaari <YAARI at il dot ibm dot com>
Date: Mon, 16 Jan 2006 16:50:52 +0000
Subject: Re: .rodata section defined as Writeable as well as Text program header
References: <OF95B6BF55.6962A49D-ONC22570E5.004C1792-C22570E5.004D593D@il.ibm.com>

Hi Alex,

Another  animality I see when compiling current (2005-12-27) glibc sources
by gcc 4.1 on RHEL4/PowerPC machine: in libm.so.6 library,  .rodata is
defined as Writeable, and so Text program header does.

[16] .rodata PROGBITS 00040588 040588 037508 00 WA 0

Any ideas why it happens?

Output sections inherit the attributes of the input sections that were mapped onto them. Therefore the most likely cause is that one or more input sections with the writable flag (SHF_WRITE) set are being mapped into the .rodata output section. Find out which sections these are (eg using the -Map linker switch) and then fix them.

Cheers
  Nick

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