Thomas Bushnell BSG wrote:
Thomas Bushnell BSG <[EMAIL PROTECTED]> writes:
Ah, I have found the problem. The Debian package builds gf2pbm with
optimization on (-O2). gf2pbm misbehaves when compiled with
optimization, and works fine when compiled without.
More specifically, failure happens with:
-fschedule-insns -fstrict-aliasing -O
But not with: -O or either of those -f optimizations alone.
there are some dodgy pointer casts in gf2pbm, specifically,
gf2pbm.c: In functie $-1òøread_GF_charòù:
gf2pbm.c:305: let op: initialization from incompatible pointer type
BMUNIT *cp, *basep, *maxp;
char **basep_cpp = &basep;
GCC4 has become much more agressive with considering cast pointers as
unaliased by definition, so I would suspect this one.
I'll try isolating it function by function now.
Thomas
--
Han-Wen Nienhuys - [EMAIL PROTECTED] - http://www.xs4all.nl/~hanwen
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