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Merge pull request #12508 from evedon/ed-mprintf-stack-overflow 

Fix minimal-printf stack overflow
pull/12463/head
Martin Kojtal 2020-03-03 14:39:11 +00:00 committed by GitHub
parent 4f07086d85 a02f4b4856
commit d94965f38d
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GPG Key ID: 4AEE18F83AFDEB23
1 changed files with 6 additions and 6 deletions
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12
platform/source/minimal-printf/mbed_printf_implementation.c
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@ -220,12 +220,12 @@ static void mbed_minimal_formatted_string_hexadecimal(char *buffer, size_t lengt
unsigned int nibble_one = (output >> 4);
unsigned int nibble_two = (output & 0x0F);
const char int2hex_lower[16] = { '0', '1', '2', '3', '4', '5', '6', '7',
'8', '9', 'a', 'b', 'c', 'd', 'e', 'f'
};
const char int2hex_upper[16] = { '0', '1', '2', '3', '4', '5', '6', '7',
'8', '9', 'A', 'B', 'C', 'D', 'E', 'F'
};
static const char int2hex_lower[16] = { '0', '1', '2', '3', '4', '5', '6', '7',
'8', '9', 'a', 'b', 'c', 'd', 'e', 'f'
};
static const char int2hex_upper[16] = { '0', '1', '2', '3', '4', '5', '6', '7',
'8', '9', 'A', 'B', 'C', 'D', 'E', 'F'
};
const char *int2hex = upper ? int2hex_upper : int2hex_lower;
if (print_leading_zero || nibble_one != 0) {