[GRASS-dev] Mem bug in G_squeeze ()

[benjamin.ducke at ufg.uni-kiel.de]

I recently valgrind'd some of my code and there were always
small problems involving G_squeeze.

The problem seems to be with parsing strings that contain
nothing but whitespace, such as "\n".

For such strings, valgrind complains:

==15705== Invalid read of size 1
==15705==    at 0x411EEAE: G_squeeze (squeeze.c:62)
==15705==    by 0x804BF8C: run_list (run.c:611)
==15705==    by 0x8049E19: main (main.c:457)
==15705==  Address 0x6584E2F is 1 bytes before a block of size 2 alloc'd
==15705==    at 0x4022765: malloc (vg_replace_malloc.c:149)
==15705==    by 0x40EEA12: G_malloc (alloc.c:39)
==15705==    by 0x411EF4F: G_store (store.c:36)
==15705==    by 0x804BF82: run_list (run.c:610)
==15705==    by 0x8049E19: main (main.c:457)

It seems to me that line 62 of squeeze.c needs to be conditionalized in
some way.

Cheers,

Ben


-- 
Benjamin Ducke
Senior Applications Support and Development Officer

Oxford Archaeological Unit Limited
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