diff options
| author | Michael Forney <mforney@mforney.org> | 2019-11-20 01:22:06 -0800 |
|---|---|---|
| committer | June McEnroe <june@causal.agency> | 2019-11-21 16:26:37 -0500 |
| commit | f4b0d09e3f782511b99626104ca960dd5decd4b8 (patch) | |
| tree | a7d7b4550e803624c9f33562ba89c0358b2019fe /local.c | |
| parent | Zero temporary SASL PLAIN buffer (diff) | |
| download | pounce-f4b0d09e3f782511b99626104ca960dd5decd4b8.tar.gz pounce-f4b0d09e3f782511b99626104ca960dd5decd4b8.zip | |
Declare globals as extern in headers, and define in source file
Otherwise, each source file that includes the header gets its own definition, and according to the C standard (C99 6.9p5): > If an identifier declared with external linkage is used in an > expression (other than as part of the operand of a sizeof operator > whose result is an integer constant), somewhere in the entire > program there shall be exactly one external definition for the > identifier Most compilers use the .bss section for zero data, but if it uses .data instead, or if -Wl,--warn-common is used, this will cause a linking error.
Diffstat (limited to '')
0 files changed, 0 insertions, 0 deletions