Bug 178168 – dev-lang/tcc-0.9.23-r1 crashes on NX-bit enabled CPU (patch attached)

• Status: RESOLVED FIXED
• Product: Gentoo Linux

[Description Joël 2007-05-12 10:46:27 UTC]

tcc 0.9.23-r1 will crash when invoked with the "-run" switch on a NX-bit enabled CPU.

Upstream fix is in CVS:
http://cvs.savannah.nongnu.org/viewcvs/tinycc/tcc.c?root=tinycc&r1=1.172&r2=1.173&makepatch=1&diff_format=u


Reproducible: Always

Steps to Reproduce:
1. echo -e '#!/usr/bin/tcc -run\nvoid main(){}' > test.c
2. chmod +x test.c
3. ./test.c

Actual Results:  
tcc segfaults because it doesn't mark executable pages with PROT_EXEC

[Comment 1 Joël 2007-05-12 10:50:18 UTC]

Created attachment 118979 [details, diff]
Upstream patch (successfully tested on x86 with NX bit enabled)

To test this patch, simply add to src_unpack():
epatch "${FILESDIR}"/${P}-NXbit.patch

[Comment 2 Harald van Dijk (RETIRED) 2007-05-12 11:32:31 UTC]

Thanks for the report and the patch. I've added this to the ebuild for 0.9.23-r1 (without a revbump).