Slim down static binaries by avoiding stdio.
It's okay for a program to choose to drag in stdio, but it's unfortunate
if even the minimal "int main() { return 42; }" drags in stdio...
This brings the minimal static binary on ARM down from 78KiB to 46KiB.
Given that we don't have a separate -lpthread it's not obvious to me that
we can shave this down any further. I'm not sure whether this is a worthwhile
change for that reason. (And the fact that dynamic binaries, the usual case,
are unaffected either way.)
Change-Id: I02f91dcff37d14354314a30b72fed2563f431c88
diff --git a/libc/bionic/malloc_debug_leak.cpp b/libc/bionic/malloc_debug_leak.cpp
index bc88d23..d9824f0 100644
--- a/libc/bionic/malloc_debug_leak.cpp
+++ b/libc/bionic/malloc_debug_leak.cpp
@@ -268,7 +268,7 @@
}
extern "C" void* fill_pvalloc(size_t bytes) {
- size_t pagesize = sysconf(_SC_PAGESIZE);
+ size_t pagesize = getpagesize();
size_t size = BIONIC_ALIGN(bytes, pagesize);
if (size < bytes) { // Overflow
return NULL;
@@ -277,7 +277,7 @@
}
extern "C" void* fill_valloc(size_t size) {
- return fill_memalign(sysconf(_SC_PAGESIZE), size);
+ return fill_memalign(getpagesize(), size);
}
// =============================================================================
@@ -477,7 +477,7 @@
}
extern "C" void* leak_pvalloc(size_t bytes) {
- size_t pagesize = sysconf(_SC_PAGESIZE);
+ size_t pagesize = getpagesize();
size_t size = BIONIC_ALIGN(bytes, pagesize);
if (size < bytes) { // Overflow
return NULL;
@@ -486,5 +486,5 @@
}
extern "C" void* leak_valloc(size_t size) {
- return leak_memalign(sysconf(_SC_PAGESIZE), size);
+ return leak_memalign(getpagesize(), size);
}