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tinystdio: Handled invalid sequence of characters #23

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tinystdio: Handled invalid sequence of characters #23

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8 changes: 6 additions & 2 deletions newlib/libc/tinystdio/conv_flt.c
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Original file line number Diff line number Diff line change
Expand Up @@ -394,8 +394,12 @@ conv_flt (FLT_STREAM *stream, FLT_CONTEXT *context, width_t width, void *addr, u
if (!isdigit (edig))
{
scanf_ungetc(edig, stream, context);
if (esign != EOF)
scanf_ungetc(esign, stream, context);
if (esign != EOF) {
esign = scanf_getc (stream, context);
if(!isdigit (esign))
return 0;
scanf_ungetc(edig, stream, context);
}
goto no_exp;
}

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2 changes: 2 additions & 0 deletions newlib/libc/tinystdio/vfscanf.c
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Expand Up @@ -279,6 +279,8 @@ conv_int (FILE *stream, scanf_context_t *context, width_t width, void *addr, uin
base = 16;
if (!--width || IS_EOF(i = scanf_getc (stream, context)))
goto putval;
if(!isxdigit(i))
goto err;
#ifdef _NEED_IO_PERCENT_B
} else if (i == 'b' && base <= 2) {
base = 2;
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