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Allow a memory size of 0.

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This commit is contained in:
Moritz Bunkus 2009-05-07 08:47:13 +02:00
parent 8997d4f60f
commit d6e2bcff21
1 changed files with 6 additions and 2 deletions
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8
src/common/mm_io.cpp
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@ -939,8 +939,12 @@ mm_mem_io_c::mm_mem_io_c(unsigned char *_mem,
throw error_c(Y("wrong usage: increase < 0"));
if ((mem == NULL) && (increase > 0)) {
mem = (unsigned char *)safemalloc(mem_size);
if (0 == mem_size)
allocated = increase;
mem = (unsigned char *)safemalloc(increase);
free_mem = true;
} else
free_mem = false;
}
@ -972,7 +976,7 @@ mm_mem_io_c::getFilePointer() {
void
mm_mem_io_c::setFilePointer(int64 offset,
seek_mode mode) {
if (((NULL == mem) && (NULL == ro_mem)) || (0 == mem_size))
if ((NULL == mem) && (NULL == ro_mem) && (0 == mem_size))
throw error_c(Y("wrong usage: read-only with NULL memory"));
int64_t new_pos