67c6ad6f30
`getdelim` and `getline` may free, allocate, or re-allocate the input buffer, ensuring its size is enough to hold the incoming line, the delimiter, and the null terminator. `*lineptr` must be a valid argument to `free`, which means it can be either 1. `NULL`, in which case these functions perform an allocation equivalent to a call to `malloc` even on failure. 2. A pointer returned by the `malloc` family of functions. Other pointers are UB (`alloca`, a pointer to a static, to a stack variable, etc.)
36 lines
1.0 KiB
Objective-C
36 lines
1.0 KiB
Objective-C
// Like the compiler, the static analyzer treats some functions differently if
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// they come from a system header -- for example, it is assumed that system
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// functions do not arbitrarily free() their parameters, and that some bugs
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// found in system headers cannot be fixed by the user and should be
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// suppressed.
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#pragma clang system_header
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typedef __typeof(sizeof(int)) size_t;
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void *malloc(size_t);
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void *calloc(size_t, size_t);
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void free(void *);
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void *alloca(size_t);
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#if __OBJC__
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#import "system-header-simulator-objc.h"
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@interface Wrapper : NSData
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- (id)initWithBytesNoCopy:(void *)bytes length:(NSUInteger)len;
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@end
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@implementation Wrapper
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- (id)initWithBytesNoCopy:(void *)bytes length:(NSUInteger)len {
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return [self initWithBytesNoCopy:bytes length:len freeWhenDone:1]; // no-warning
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}
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@end
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@interface CustomData : NSData
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+ (id)somethingNoCopy:(char *)bytes;
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+ (id)somethingNoCopy:(void *)bytes length:(NSUInteger)length freeWhenDone:(BOOL)freeBuffer;
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+ (id)something:(char *)bytes freeWhenDone:(BOOL)freeBuffer;
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@end
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#endif
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