CVS commit: src

["Roland Illig" <rillig%netbsd.org@localhost>]

Module Name:    src
Committed By:   rillig
Date:           Fri Apr  8 21:48:19 UTC 2022

Modified Files:
        src/tests/usr.bin/xlint/lint1: msg_048.c msg_048.exp
        src/usr.bin/xlint: Makefile.inc
        src/usr.bin/xlint/lint1: decl.c

Log Message:
lint: fix undefined behavior on enum overflow (since 1995)

GCC had optimized the check away, due to the obvious integer overflow 'x
- 1 == INT_MAX'.  To prevent further bugs like this, compile with
-ftrapv.


To generate a diff of this commit:
cvs rdiff -u -r1.3 -r1.4 src/tests/usr.bin/xlint/lint1/msg_048.c \
    src/tests/usr.bin/xlint/lint1/msg_048.exp
cvs rdiff -u -r1.20 -r1.21 src/usr.bin/xlint/Makefile.inc
cvs rdiff -u -r1.268 -r1.269 src/usr.bin/xlint/lint1/decl.c

Please note that diffs are not public domain; they are subject to the
copyright notices on the relevant files.