Implementing C99 partial re-initialization behavior (DR-253)

Description

Implementing C99 partial re-initialization behavior (DR-253)

Based on previous discussion on the mailing list, clang currently lacks support
for C99 partial re-initialization behavior:
Reference: http://lists.cs.uiuc.edu/pipermail/cfe-dev/2013-April/029188.html
Reference: http://www.open-std.org/jtc1/sc22/wg14/www/docs/dr_253.htm

This patch attempts to fix this problem.

Given the following code snippet,

struct P1 { char x[6]; };
struct LP1 { struct P1 p1; };

struct LP1 l = { .p1 = { "foo" }, .p1.x[2] = 'x' };
this example is adapted from the example for "struct fred x[]" in DR-253;
currently clang produces in l: { "\0\0x" },
whereas gcc 4.8 produces { "fox" };
with this fix, clang will also produce: { "fox" };

Differential Review: http://reviews.llvm.org/D5789

Details

Committed
ygaoJun 9 2015, 5:27 PM
Parents
rL239445: Fix -Wsign-compare warning in WinException.cpp
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