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[CRT] Only write to the output buffer when necessary in _strlwr. CORE-16667

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Like e884290d29, this is also a hack and is missing locale awareness.
This commit is contained in:
Thomas Faber 2020-02-09 10:20:48 +01:00
parent 6f232770d3
commit d528e63477
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GPG key ID: 076E7C3D44720826
1 changed files with 5 additions and 1 deletions
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6
sdk/lib/crt/string/strlwr.c
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@ -7,9 +7,13 @@
char * CDECL _strlwr(char *x) char * CDECL _strlwr(char *x)
{ {
char *y=x; char *y=x;
char ch, lower;
while (*y) { while (*y) {
*y=tolower(*y); ch = *y;
lower = tolower(ch);
if (ch != lower)
*y = lower;
y++; y++;
} }
return x; return x;