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TFile: Relax assertion and allow FRead, FWrite with count == 0

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The assertions introduced by commit 8bea6bcc12
were too strict. The first one failed in osd_test, the second one failed
in `tesseract IMAGE BASE --psm 13 lstm.train`.

Signed-off-by: Stefan Weil <sw@weilnetz.de>
This commit is contained in:
Stefan Weil 2018-06-04 22:27:41 +02:00
parent 83ae900549
commit 52fddc3ca9
1 changed files with 2 additions and 2 deletions
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4
src/ccutil/serialis.cpp
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@ -112,7 +112,7 @@ int TFile::FReadEndian(void* buffer, size_t size, int count) {
int TFile::FRead(void* buffer, size_t size, int count) {
ASSERT_HOST(!is_writing_);
ASSERT_HOST(size > 0);
ASSERT_HOST(count > 0);
ASSERT_HOST(count >= 0);
size_t required_size;
if (SIZE_MAX / size <= count) {
// Avoid integer overflow.
@ -160,7 +160,7 @@ bool TFile::CloseWrite(const STRING& filename, FileWriter writer) {
int TFile::FWrite(const void* buffer, size_t size, int count) {
ASSERT_HOST(is_writing_);
ASSERT_HOST(size > 0);
ASSERT_HOST(count > 0);
ASSERT_HOST(count >= 0);
ASSERT_HOST(SIZE_MAX / size > count);
size_t total = size * count;
const char* buf = static_cast<const char*>(buffer);