Commit Graph

8 Commits

Author SHA1 Message Date
Stephen Heumann
76cc4b9ca7 Update printf/scanf format checker to match recent library changes.
*Recognize the 'll' and 'j' size modifiers as denoting long long times.
*Recognize '%P' as equivalent to '%b'.
*Give a warning for 'L' length modifier in scanf, which is currently not supported (except when assignment is suppressed).
2021-02-14 17:45:39 -06:00
Stephen Heumann
55dbc718c1 Small format checker adjustments.
Format checking for "%p" is improved: in the case of scanf, the corresponding argument must be a pointer to a pointer.
2018-09-02 15:12:52 -05:00
Stephen Heumann
d3aff49550 Use escape sequences in format strings printed by the format checker.
Error messages are now lined up to account for the actual printed length of any escape sequences.
2018-09-02 00:18:26 -05:00
Stephen Heumann
7493ffa76c Support the pause-on-errors feature for format checker messages. 2018-09-01 23:18:48 -05:00
Stephen Heumann
ecff1e3479 Don't give an error when format string is not a string literal.
This may be indicative of dubious code in some cases, but it can also have valid use cases that are not easy to modify.

If desired, this could be re-enabled under a separate lint flag (analogous to -Wformat-nonliteral in GCC/Clang, which is available as an option but is not included in -Wformat or -Wall).
2018-09-01 22:36:31 -05:00
Stephen Heumann
94ec3c73c7 Various tweaks to printf/scanf format checking.
It is now stricter about invalid length modifiers. Also, "comp" is accepted where a floating-point type is expected (like the others, it is promoted to extended), and size specifiers are allowed with %n (now pretty much supported in the latest library version).
2018-09-01 22:25:38 -05:00
Stephen Heumann
69f086367c Adjust how messages from the printf/scanf format checker are displayed.
Mainly, this causes the messages from the format checker to be displayed after the relevant line is printed, along with any other error messages. The wording and formatting of some of the messages is also slightly adjusted, but there should be no substantive change in what is warned about.
2018-09-01 19:59:52 -05:00
Kelvin Sherlock
6c1ccc5c0d Squashed commit of the following:
commit 4265329097538640e9e21202f1b141bcd42a44f3
Author: Kelvin Sherlock <ksherlock@gmail.com>
Date:   Fri Mar 23 21:45:32 2018 -0400

    indent to match standard indent.

commit 783518fbeb01d2df43ef2083d3341004c05e4e2e
Author: Kelvin Sherlock <ksherlock@gmail.com>
Date:   Fri Mar 23 20:21:15 2018 -0400

    clean up the typenames

commit 29b627ecf5ca9b8a143761f85a1807a6ca35ddd9
Author: Kelvin Sherlock <ksherlock@gmail.com>
Date:   Fri Mar 23 20:18:04 2018 -0400

    enable feature_hh, warn about %n with non-int modifier.

commit fc4ac8129e3772c4eda36658e344ec475938369c
Author: Kelvin Sherlock <ksherlock@gmail.com>
Date:   Fri Mar 23 15:13:47 2018 -0400

    warn thar %lc, %ls, etc are unsupported.

commit 7e6b433ba0552f7e52f0f034d398e9195c764326
Author: Kelvin Sherlock <ksherlock@gmail.com>
Date:   Fri Mar 23 13:36:25 2018 -0400

    warn about hh/ll modifier (if not supported)

commit 1943c9979d0013f9f38045ec04a962fbf0269f31
Author: Kelvin Sherlock <ksherlock@gmail.com>
Date:   Fri Mar 23 11:42:41 2018 -0400

    use error facilities for format errors.

commit 7811168f56dca1387055574ba8d32638da2fad96
Author: Kelvin Sherlock <ksherlock@gmail.com>
Date:   Thu Mar 22 15:34:21 2018 -0400

    add feature flags to disable c99 enhancements until orca lib is updated.

commit c2149cc5953155cfc3c3b4d0483cd25fb946b055
Author: Kelvin Sherlock <ksherlock@gmail.com>
Date:   Thu Mar 22 08:59:10 2018 -0400

    Add printf/scanf format checking [WIP]

    This parses out the xprintf / xscanf format string and compares it with the function arguments.

    enabled via #pragma lint 16.
2018-03-23 21:51:27 -04:00