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util: check for < 0 explicitly in safe_atou

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The previous check only worked if sizeof(long) > sizeof(int). Rather than be
fancy about it, just cast to a signed long, check for negativity and continue
based on that.

Fixes #137

Signed-off-by: Peter Hutterer <peter.hutterer@who-t.net>
This commit is contained in:
Peter Hutterer 2018-09-13 08:18:16 +10:00
parent d616218c9a
commit c501dabf39
1 changed files with 1 additions and 1 deletions
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2
src/libinput-util.h
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@ -538,7 +538,7 @@ safe_atou_base(const char *str, unsigned int *val, int base)
if (*str != '\0' && *endptr != '\0')
return false;
if (v > UINT_MAX)
if ((long)v < 0)
return false;
*val = v;