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[asan] Reduce shadow gap start on 32-bit Android. 

This fixes an internal assertion failure when running out of
the address space in the large allocator.

llvm-svn: 244359
This commit is contained in:
Evgeniy Stepanov 2015-08-07 21:17:46 +00:00
parent 8c484af217
commit 290d721070
1 changed files with 1 additions and 1 deletions
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2
compiler-rt/lib/asan/asan_mapping.h
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@ -178,7 +178,7 @@ static const u64 kWindowsShadowOffset32 = 3ULL << 28; // 0x30000000
// With the zero shadow base we can not actually map pages starting from 0.
// This constant is somewhat arbitrary.
#define kZeroBaseShadowStart (1 << 18)
#define kZeroBaseShadowStart 4096
#define kShadowGapBeg (kLowShadowEnd ? kLowShadowEnd + 1 \
: kZeroBaseShadowStart)