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Revision 70afc343

ID70afc343c75ecc8895b9308ee6a15fcc7a3b0f3e

Added by Cédric VINCENT almost 13 years ago

linux-user: Fix initialization of the heap contents when allocating new pages

Technically the new mmapped pages are already initialized to zero
since they are anonymous, however we have to take care with the
contents that come from the remaining part of the previous page: it
may contains garbage data due to a previous heap usage (grown then
shrunken).

This patch completes commit 55f08c84. The problem could be reproduced
when emulating the build process of Perl 5.12.3 on ARMedSlack 13.37:

make[1]: Entering directory `/tmp/perl-5.12.3/cpan/Compress-Raw-Bzip2'
    cc -c  -I. -fno-strict-aliasing -pipe -fstack-protector                 \
           -I/usr/local/include -D_LARGEFILE_SOURCE -D_FILE_OFFSET_BITS=64  \
           -O2   -DVERSION=\"2.024\" -DXS_VERSION=\"2.024\" -fPIC "-I../.." \
           -DBZ_NO_STDIO  decompress.c
    decompress.c: In function 'BZ2_decompress':
    decompress.c:621:1: internal compiler error: Segmentation fault

Signed-off-by: Riku Voipio <>
Signed-off-by: Laurent ALFONSI <>
Signed-off-by: Cédric VINCENT <>

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