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| author | Patrick Georgi <pgeorgi@chromium.org> | 2016-04-13 18:51:12 +0200 |
|---|---|---|
| committer | Martin Roth <martinroth@google.com> | 2016-04-15 16:18:57 +0200 |
| commit | c42b7864851040b2ec19adc93f8635bcaf1e652b (patch) | |
| tree | d484a064445d346bc69c459361cfcd87aada70aa | |
| parent | b3ee03c404e0a26dc338a26f7ce01ddb8dafaaec (diff) | |
| download | coreboot-c42b7864851040b2ec19adc93f8635bcaf1e652b.tar.xz | |
stddef.h: fix zeroptr's definition
As Aaron pointed out, the old definition made the compiler emit two
memory accesses, to 0 (for derefencing) and then reading at whatever
address could be read from there.
Change-Id: I5cdd53f5bd2d2397c43f09f3e5fa46be08744b01
Found-by: Aaron Durbin <adurbin@chromium.org>
Signed-off-by: Patrick Georgi <pgeorgi@chromium.org>
Reviewed-on: https://review.coreboot.org/14342
Tested-by: build bot (Jenkins)
Reviewed-by: Aaron Durbin <adurbin@chromium.org>
| -rw-r--r-- | src/include/stddef.h | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/src/include/stddef.h b/src/include/stddef.h index 35326ed6c6..d0308d2580 100644 --- a/src/include/stddef.h +++ b/src/include/stddef.h @@ -39,7 +39,7 @@ typedef unsigned int wint_t; * undefined behaviour and do whatever" trickery in compilers. * Use when you _really_ need to read32(zeroptr) (ie. read address 0). */ -extern void *zeroptr; +extern char zeroptr[]; #endif #endif /* STDDEF_H */ |