Commit graph

7 commits

Author SHA1 Message Date
Elliott Hughes
1f462dec34 Add %b and %B support to the scanf/wscanf and strto*/wcsto* families.
Coming to C23 via WG14 N2630.

This one is a little interesting, because it actually changes existing
behavior. Previously "0b101" would be parsed as "0", "b", "101" by these
functions. I'm led to believe that glibc plans to actually have separate
versions of these functions for C23 and pre-C23, so callers can have the
behavior they (implicitly) specify by virtue of which -std= they compile
with. Android has never really done anything like that, and I'm pretty
sure app developers have more than enough to worry about with API levels
without having to deal with the cartesian product of API level and C
standard.

Therefore, my plan A is "if you're running on Android >= U, you get C23
behavior". My plan B in the (I think unlikely) event that that actually
causes trouble for anyone is "if you're _targeting_ Android >= U, you
get C23 behavior". I don't think we'd actually want to have two versions
of each of these functions under any circumstances --- that seems by far
the most confusing option.

Test: treehugger
Change-Id: I0bbb30315d3fabd306905ad1484361f5d8745935
2022-08-11 00:25:08 +00:00
Elliott Hughes
bf03c01b38 Remove bionic's internal ctype-like inlines.
Bug: http://b/144165498
Test: treehugger
Change-Id: Ifcf352525abc74850053a1a019f90c72e488b71c
2020-02-05 11:39:35 -08:00
Josh Gao
4956c372cf Move bionic_macros.h from private to platform.
Test: treehugger
Change-Id: Ie473914f4c8924c7240b3ac22093a9daf42fc948
2020-01-02 14:09:50 -08:00
George Burgess IV
fa5410fdb7 libc: enable -Wimplicit-fallthrough
libc had some -Wimplicit-fallthrough warnings. They all seem to be
benign. We're trying to enable this flag globally, so we need to
annotate these breaks here.

Bug: 112564944
Test: Builds
Change-Id: I5afae694cc4cf26ad1a61e2c8ae91f00cda7c733
2018-08-15 10:11:08 -07:00
Yi Kong
32bc0fcf69 Modernize codebase by replacing NULL with nullptr
Fixes -Wzero-as-null-pointer-constant warning.

Test: m
Bug: 68236239
Change-Id: I5b4123bc6709641315120a191e36cc57541349b2
2018-08-02 18:09:44 -07:00
Elliott Hughes
3048a36a34 Simplify CT_CCL and CT_STRING inner loop.
Makes no difference to the benchmarks, but does make the code a bit
more readable.

Bug: http://b/68672236
Test: ran tests, benchmarks
Change-Id: I63fa5f78d077c86e4f4f194f2c76ab5510c29109
2018-01-19 17:58:07 -08:00
Elliott Hughes
38e4aefe6c Support %mc/%ms/%m[ in sscanf.
Also support the "long" (wchar_t) variants.

Bug: http://b/68672236
Test: ran tests
Change-Id: I060e98b4d2feb61e12986d9d51e4710b2b1d9724
2018-01-19 14:53:55 -08:00
Renamed from libc/stdio/vfscanf.c (Browse further)