Remove the limit and solve https://gcc.gnu.org/bugzilla/show_bug.cgi?id=14940.
I have tested the patch on `x86_64-w64-mingw32` with MSVCRT, by pre-compiling a header of many standard and boost headers to generate a 313-MiB-large .gch file and using it to compile a simple 'hello world' program, and seen no problems so far.
After eighteen years this has eventually been settled. (sigh) -- Best regards, LIU Hao
From c084ab275f47cc27621e664d1c63e177525cf321 Mon Sep 17 00:00:00 2001 From: LIU Hao <lh_mo...@126.com> Date: Tue, 10 May 2022 13:19:07 +0800 Subject: [PATCH] Remove size limit of PCH Reference: https://gcc.gnu.org/bugzilla/show_bug.cgi?id=14940 Signed-off-by: LIU Hao <lh_mo...@126.com> --- gcc/config/i386/host-mingw32.cc | 10 ++-------- 1 file changed, 2 insertions(+), 8 deletions(-) diff --git a/gcc/config/i386/host-mingw32.cc b/gcc/config/i386/host-mingw32.cc index 3b0d83ffc60..f915b85abd0 100644 --- a/gcc/config/i386/host-mingw32.cc +++ b/gcc/config/i386/host-mingw32.cc @@ -44,9 +44,6 @@ static size_t mingw32_gt_pch_alloc_granularity (void); static inline void w32_error(const char*, const char*, int, const char*); -/* FIXME: Is this big enough? */ -static const size_t pch_VA_max_size = 128 * 1024 * 1024; - /* Granularity for reserving address space. */ static size_t va_granularity = 0x10000; @@ -88,9 +85,6 @@ static void * mingw32_gt_pch_get_address (size_t size, int) { void* res; - size = (size + va_granularity - 1) & ~(va_granularity - 1); - if (size > pch_VA_max_size) - return NULL; /* FIXME: We let system determine base by setting first arg to NULL. Allocating at top of available address space avoids unnecessary @@ -100,7 +94,7 @@ mingw32_gt_pch_get_address (size_t size, int) If we allocate at bottom we need to reserve the address as early as possible and at the same point in each invocation. */ - res = VirtualAlloc (NULL, pch_VA_max_size, + res = VirtualAlloc (NULL, size, MEM_RESERVE | MEM_TOP_DOWN, PAGE_NOACCESS); if (!res) @@ -150,7 +144,7 @@ mingw32_gt_pch_use_address (void *&addr, size_t size, int fd, /* Offset must be also be a multiple of allocation granularity for this to work. We can't change the offset. */ - if ((offset & (va_granularity - 1)) != 0 || size > pch_VA_max_size) + if ((offset & (va_granularity - 1)) != 0) return -1; -- 2.36.0
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