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9a5d69c842
The C standard states that, in the context of an x conversion
specifier given to scanf:
> Matches an optionally signed hexadecimal integer, whose format is
> the same as expected for the subject sequence of the strtoul
> function with the value 16 for the base argument.
- C standard, 7.23.6.2.11. The fscanf function
Cosmopolitan fails to do this, as 0 should be parsed as a 0 by such an
invocation of strtoul. Instead, cosmopolitan errors out as though such
input is invalid, which is wrong.
This means that a program such as this:
#include <stdio.h>
#undef NDEBUG
#include <assert.h>
int main()
{
int v = 0;
assert(sscanf("0", "%x", &v) == 1);
}
will not run correctly on cosmpolitan, instead failing the assertion.
This patch fixes this, along with the associated GitHub issue,
https://github.com/jart/cosmopolitan/issues/778
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| .. | ||
| bits | ||
| calls | ||
| dns | ||
| fmt | ||
| intrin | ||
| log | ||
| mem | ||
| nexgen32e | ||
| release | ||
| runtime | ||
| sock | ||
| stdio | ||
| str | ||
| thread | ||
| time | ||
| tinymath | ||
| x | ||
| xed | ||
| zipos | ||
| test.mk | ||